observablehq.com Open in urlscan Pro
2606:4700:10::6816:14dc Public Scan

Go To Rescan
Add Verdict Report

URL:
https://observablehq.com/@panningforbacon/dns-lookup-in-javascript
Submission: On May 08 via manual (May 8th 2023, 8:33:51 am UTC) from GB — Scanned from GB

Summary HTTP 128 Redirects Links 4 Behaviour Indicators

Summary

This website contacted 15 IPs in 4 countries across 11 domains to perform 128 HTTP transactions. The main IP is 2606:4700:10::6816:14dc, located in United States and belongs to CLOUDFLARENET, US. The main domain is observablehq.com. The Cisco Umbrella rank of the primary domain is 209440.
TLS certificate: Issued by Cloudflare Inc ECC CA-3 on March 5th 2023. Valid for: a year.

This is the only time observablehq.com was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

	IP Address	AS Autonomous System
79	2606:4700:10:... 2606:4700:10::6816:14dc	13335 (CLOUDFLAR...) (CLOUDFLARENET)
2	2a00:1450:400... 2a00:1450:4001:80b::200e	15169 (GOOGLE) (GOOGLE)
1	2a00:1450:400... 2a00:1450:4001:812::2008	15169 (GOOGLE) (GOOGLE)
2	2a00:1450:400... 2a00:1450:4001:829::200a	15169 (GOOGLE) (GOOGLE)
1	34.120.195.249 34.120.195.249	396982 (GOOGLE-CL...) (GOOGLE-CLOUD-PLATFORM)
4	2a00:1450:400... 2a00:1450:4001:806::2003	15169 (GOOGLE) (GOOGLE)
1	2600:9000:225... 2600:9000:2250:e400:3:3696:5cc0:93a1	16509 (AMAZON-02) (AMAZON-02)
11	2600:9000:21f... 2600:9000:21f3:2a00:10:f2df:eb80:93a1	16509 (AMAZON-02) (AMAZON-02)
1	2a00:1450:400... 2a00:1450:400c:c04::9a	15169 (GOOGLE) (GOOGLE)
10	2600:9000:249... 2600:9000:2490:1400:1c:df24:ee80:93a1	16509 (AMAZON-02) (AMAZON-02)
1	2a00:1450:400... 2a00:1450:4001:80f::2004	15169 (GOOGLE) (GOOGLE)
3	2606:4700:303... 2606:4700:3037::6815:5381	13335 (CLOUDFLAR...) (CLOUDFLARENET)
1	2a04:4e42:400... 2a04:4e42:400::485	54113 (FASTLY) (FASTLY)
10	1.1.1.1 1.1.1.1	13335 (CLOUDFLAR...) (CLOUDFLARENET)
128	15

79 2606:4700:10::6816:14dc (United States)

ASN13335 (CLOUDFLARENET, US)

observablehq.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools
api.observablehq.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools
events.observablehq.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 2a00:1450:4001:80b::200e (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

www.google-analytics.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2a00:1450:4001:812::2008 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

www.googletagmanager.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 2a00:1450:4001:829::200a (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

fonts.googleapis.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 34.120.195.249 (Kansas City, United States)

ASN396982 (GOOGLE-CLOUD-PLATFORM, US)
PTR: 249.195.120.34.bc.googleusercontent.com

o299802.ingest.sentry.io	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

4 2a00:1450:4001:806::2003 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

fonts.gstatic.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2600:9000:2250:e400:3:3696:5cc0:93a1 (United States)

ASN16509 (AMAZON-02, US)

panningforbacon.static.observableusercontent.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

11 2600:9000:21f3:2a00:10:f2df:eb80:93a1 (United States)

ASN16509 (AMAZON-02, US)

avatars.observableusercontent.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2a00:1450:400c:c04::9a (Brussels, Belgium)

ASN15169 (GOOGLE, US)

stats.g.doubleclick.net	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

10 2600:9000:2490:1400:1c:df24:ee80:93a1 (United States)

ASN16509 (AMAZON-02, US)

static.observableusercontent.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2a00:1450:4001:80f::2004 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

www.google.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

3 2606:4700:3037::6815:5381 (United States)

ASN13335 (CLOUDFLARENET, US)

cdn.observableusercontent.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2a04:4e42:400::485 (United States)

ASN54113 (FASTLY, US)

cdn.jsdelivr.net	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

10 1.1.1.1 (None, )

ASN13335 (CLOUDFLARENET, US)
PTR: one.one.one.one

1.1.1.1	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

	Apex Domain Subdomains	Transfer
79	observablehq.com observablehq.com — Cisco Umbrella Rank: 209440 api.observablehq.com — Cisco Umbrella Rank: 244795 events.observablehq.com — Cisco Umbrella Rank: 796682	2 MB
25	observableusercontent.com panningforbacon.static.observableusercontent.com avatars.observableusercontent.com — Cisco Umbrella Rank: 805585 static.observableusercontent.com cdn.observableusercontent.com — Cisco Umbrella Rank: 934055	341 KB
4	gstatic.com fonts.gstatic.com	81 KB
2	googleapis.com fonts.googleapis.com — Cisco Umbrella Rank: 37	2 KB
2	google-analytics.com www.google-analytics.com — Cisco Umbrella Rank: 30	21 KB
1	jsdelivr.net cdn.jsdelivr.net — Cisco Umbrella Rank: 346	40 KB
1	google.com www.google.com — Cisco Umbrella Rank: 2	409 B
1	doubleclick.net stats.g.doubleclick.net — Cisco Umbrella Rank: 74	354 B
1	sentry.io o299802.ingest.sentry.io — Cisco Umbrella Rank: 867017	302 B
1	googletagmanager.com www.googletagmanager.com — Cisco Umbrella Rank: 48	84 KB
0	google.co.uk Failed www.google.co.uk Failed
128	11

	Domain	Requested by
77	observablehq.com	observablehq.com
11	avatars.observableusercontent.com	observablehq.com
10	static.observableusercontent.com	observablehq.com panningforbacon.static.observableusercontent.com
4	fonts.gstatic.com	fonts.googleapis.com
3	cdn.observableusercontent.com	static.observableusercontent.com
2	fonts.googleapis.com	observablehq.com static.observableusercontent.com
2	www.google-analytics.com	observablehq.com
1	events.observablehq.com	observablehq.com
1	cdn.jsdelivr.net	static.observableusercontent.com
1	www.google.com	observablehq.com
1	stats.g.doubleclick.net	observablehq.com
1	panningforbacon.static.observableusercontent.com	observablehq.com
1	api.observablehq.com	observablehq.com
1	o299802.ingest.sentry.io	observablehq.com
1	www.googletagmanager.com	observablehq.com
0	www.google.co.uk Failed	observablehq.com
128	16

This site contains links to these domains. Also see Links.

Domain
www.linkedin.com
twitter.com
github.com
www.youtube.com

Subject Issuer	Validity	Valid
observablehq.com Cloudflare Inc ECC CA-3	`2023-03-05` - `2024-03-04`	a year	crt.sh
*.google-analytics.com GTS CA 1C3	`2023-04-17` - `2023-07-10`	3 months	crt.sh
upload.video.google.com GTS CA 1C3	`2023-04-17` - `2023-07-10`	3 months	crt.sh
ingest.sentry.io DigiCert TLS RSA SHA256 2020 CA1	`2022-07-28` - `2023-08-28`	a year	crt.sh
*.gstatic.com GTS CA 1C3	`2023-04-17` - `2023-07-10`	3 months	crt.sh
*.static.observableusercontent.com Amazon RSA 2048 M01	`2023-03-01` - `2023-11-15`	9 months	crt.sh
avatars.observableusercontent.com Amazon RSA 2048 M02	`2023-03-10` - `2024-04-07`	a year	crt.sh
*.g.doubleclick.net GTS CA 1C3	`2023-04-17` - `2023-07-10`	3 months	crt.sh
static.observableusercontent.com Amazon RSA 2048 M01	`2023-02-23` - `2023-11-06`	8 months	crt.sh
www.google.com GTS CA 1C3	`2023-04-17` - `2023-07-10`	3 months	crt.sh
*.observableusercontent.com GTS CA 1P5	`2023-04-12` - `2023-07-11`	3 months	crt.sh
jsdelivr.net GlobalSign Atlas R3 DV TLS CA 2022 Q4	`2022-12-23` - `2024-01-24`	a year	crt.sh
cloudflare-dns.com DigiCert TLS Hybrid ECC SHA384 2020 CA1	`2023-01-12` - `2024-01-11`	a year	crt.sh

This page contains 2 frames:

Primary Page: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript
Frame ID: 4E409F63E31D9618A7369E197FCE0021
Requests: 109 HTTP requests in this frame

Frame: https://panningforbacon.static.observableusercontent.com/next/worker-fd95503b.html
Frame ID: 5134C82C07548865FD8742BD35E2774D
Requests: 15 HTTP requests in this frame

Screenshot
Live screenshot

Full Image

Page Title

DNS Lookup in JavaScript / Steve | ObservableInsert cellInsert cellInsert cellInsert cellInsert cellInsert cellInsert cellInsert cellInsert cellInsert cellThis notebook is a forkLinkedInTwitterGitHubYouTube

Detected technologies

Google Analytics (Analytics) Expand

Overall confidence: 100%
Detected patterns

google-analytics\.com/(?:ga|urchin|analytics)\.js

Google Tag Manager (Tag Managers) Expand

Overall confidence: 100%
Detected patterns

googletagmanager\.com/gtag/js

Marked (JavaScript Libraries) Expand

Overall confidence: 100%
Detected patterns

/marked(?:\.min)?\.js

jsDelivr (CDN) Expand

Overall confidence: 100%
Detected patterns

//cdn\.jsdelivr\.net/

Page Statistics

128
Requests

99 %
HTTPS

86 %
IPv6

11
Domains

16
Subdomains

15
IPs

4
Countries

2837 kB
Transfer

9361 kB
Size

5
Cookies

4 Outgoing links

These are links going to different origins than the main page.

URL: https://www.linkedin.com/company/observable
Title: LinkedIn

Search URL Search Domain Scan URL

URL: https://twitter.com/observablehq
Title: Twitter

Search URL Search Domain Scan URL

URL: https://github.com/observablehq/
Title: GitHub

Search URL Search Domain Scan URL

URL: https://www.youtube.com/c/Observablehq
Title: YouTube

Search URL Search Domain Scan URL

Redirected requests

There were HTTP redirect chains for the following requests:

128 HTTP transactions
1 data transactions

Method
Protocol Status Resource
Path Size
x-fer Time
Latency Type
MIME-Type IP
Location

GET
H2 200 Primary Request dns-lookup-in-javascript Show response
observablehq.com/@panningforbacon/ 86 KB
24 KB 605ms
515ms Document
text/html 2606:4700:10::6816:14dc
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://observablehq.com/@panningforbacon/dns-lookup-in-javascript

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2606:4700:10::6816:14dc , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare / Next.js

Resource Hash

27c6943c0f84283d4d840c57a685cb1961e10cad9d4ef33fc64f4db3d3e5241b

Security Headers

Name

Value

Content-Security-Policy

default-src 'self' https://api.observablehq.com https://events.observablehq.com https://static.observablehq.com https://observablehq.com https://*.static.observableusercontent.com; connect-src 'self' https://api.observablehq.com https://events.observablehq.com https://static.observablehq.com wss://ws.observablehq.com https://connector.observableusercontent.com https://js.stripe.com https://*.ingest.sentry.io https://*.google-analytics.com https://*.analytics.google.com https://stats.g.doubleclick.net/j/collect https://www.googleapis.com https://*.googletagmanager.com https://graph.microsoft.com https://*.clarity.ms https://*.contentful.com; font-src https://fonts.gstatic.com; frame-ancestors 'none'; frame-src https://observablehq.com https://observablehq.com/embed/ https://*.static.observableusercontent.com https://js.stripe.com https://www.youtube.com/embed/ https://docs.google.com data: blob:; img-src https://api.observablehq.com https://*.static.observableusercontent.com https://static.observablehq.com https://observablehq.com https://*.githubusercontent.com https://*.stripe.com https://avatars.observableusercontent.com https://*.google-analytics.com https://www.google.com/ads/ga-audiences https://pubads.g.doubleclick.net https://*.googletagmanager.com static.observableusercontent.com https://images.ctfassets.net https://*.amazonaws.com data: blob:; manifest-src 'none'; media-src https://static.observablehq.com https://videos.ctfassets.net; object-src 'none'; script-src 'self' 'sha256-wJDBOMfNtxwDQqRmEr8s4iJJaDijupcm37ZsNBHHxSY=' 'sha256-ERfeEwC9NC9b9t4L2Qp3/yGGgUmFfGH8pIR8kI04FUM=' 'sha256-UJ7XRVoD2oZRK3RRMLdPrdHA+LguX3UEXAZ6hVbuYIk=' https://static.observablehq.com https://*.google-analytics.com https://www.googleapis.com https://apis.google.com https://*.googletagmanager.com https://js.stripe.com https://*.clarity.ms; style-src https://static.observablehq.com https://observablehq.com https://fonts.googleapis.com 'unsafe-inline'; worker-src https://observablehq.com

Strict-Transport-Security

max-age=86400; includeSubDomains

Request headers

Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36
accept-language: en-GB,en;q=0.9

Response headers

cache-control: public, max-age=30
cf-cache-status: EXPIRED
cf-ray: 7c405c1448fcdcbf-LHR
content-encoding: gzip
content-security-policy: default-src 'self' https://api.observablehq.com https://events.observablehq.com https://static.observablehq.com https://observablehq.com https://*.static.observableusercontent.com; connect-src 'self' https://api.observablehq.com https://events.observablehq.com https://static.observablehq.com wss://ws.observablehq.com https://connector.observableusercontent.com https://js.stripe.com https://*.ingest.sentry.io https://*.google-analytics.com https://*.analytics.google.com https://stats.g.doubleclick.net/j/collect https://www.googleapis.com https://*.googletagmanager.com https://graph.microsoft.com https://*.clarity.ms https://*.contentful.com; font-src https://fonts.gstatic.com; frame-ancestors 'none'; frame-src https://observablehq.com https://observablehq.com/embed/ https://*.static.observableusercontent.com https://js.stripe.com https://www.youtube.com/embed/ https://docs.google.com data: blob:; img-src https://api.observablehq.com https://*.static.observableusercontent.com https://static.observablehq.com https://observablehq.com https://*.githubusercontent.com https://*.stripe.com https://avatars.observableusercontent.com https://*.google-analytics.com https://www.google.com/ads/ga-audiences https://pubads.g.doubleclick.net https://*.googletagmanager.com static.observableusercontent.com https://images.ctfassets.net https://*.amazonaws.com data: blob:; manifest-src 'none'; media-src https://static.observablehq.com https://videos.ctfassets.net; object-src 'none'; script-src 'self' 'sha256-wJDBOMfNtxwDQqRmEr8s4iJJaDijupcm37ZsNBHHxSY=' 'sha256-ERfeEwC9NC9b9t4L2Qp3/yGGgUmFfGH8pIR8kI04FUM=' 'sha256-UJ7XRVoD2oZRK3RRMLdPrdHA+LguX3UEXAZ6hVbuYIk=' https://static.observablehq.com https://*.google-analytics.com https://www.googleapis.com https://apis.google.com https://*.googletagmanager.com https://js.stripe.com https://*.clarity.ms; style-src https://static.observablehq.com https://observablehq.com https://fonts.googleapis.com 'unsafe-inline'; worker-src https://observablehq.com
content-type: text/html; charset=utf-8
date: Mon, 08 May 2023 08:33:46 GMT
etag: "1vg6muwn411vm6"
server: cloudflare
strict-transport-security: max-age=86400; includeSubDomains
vary: cookie, Accept-Encoding
via: 1.1 vegur
x-powered-by: Next.js

GET
H2 200 analytics.js Show response
www.google-analytics.com/ 51 KB
21 KB 143ms
45ms Script
text/javascript 2a00:1450:4001:80b::200e
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://www.google-analytics.com/analytics.js

Requested by

Host: observablehq.com
URL: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:80b::200e Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

Golfe2 /

Resource Hash

e7b90d32907f89c49e9e2a2ccca95133277f756f13a14187936d9b948ff67b44

Security Headers

Name	Value
Strict-Transport-Security	max-age=10886400; includeSubDomains; preload
X-Content-Type-Options	nosniff

Request headers

accept-language: en-GB,en;q=0.9
Referer: https://observablehq.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

strict-transport-security: max-age=10886400; includeSubDomains; preload
content-encoding: gzip
x-content-type-options: nosniff
date: Mon, 08 May 2023 07:05:00 GMT
last-modified: Mon, 17 Apr 2023 22:36:01 GMT
server: Golfe2
age: 5326
vary: Accept-Encoding
content-type: text/javascript
cache-control: public, max-age=7200
cross-origin-resource-policy: cross-origin
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length: 20737
expires: Mon, 08 May 2023 09:05:00 GMT

GET
H2 200 js Show response
www.googletagmanager.com/gtag/ 248 KB
84 KB 161ms
65ms Script
application/javascript 2a00:1450:4001:812::2008
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://www.googletagmanager.com/gtag/js?id=G-9B88TP6PKQ

Requested by

Host: observablehq.com
URL: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:812::2008 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

Google Tag Manager /

Resource Hash

8a75ba88db69f982bd7f377acad8cd18e44d2adad67f50f7d0746b9d64ee10fd

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000; includeSubDomains
X-Xss-Protection	0

Request headers

accept-language: en-GB,en;q=0.9
Referer: https://observablehq.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

date: Mon, 08 May 2023 08:33:46 GMT
content-encoding: br
strict-transport-security: max-age=31536000; includeSubDomains
server: Google Tag Manager
vary: Accept-Encoding
content-type: application/javascript; charset=UTF-8
access-control-allow-origin: *
cache-control: private, max-age=900
access-control-allow-credentials: true
cross-origin-resource-policy: cross-origin
access-control-allow-headers: Cache-Control
content-length: 85888
x-xss-protection: 0
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
expires: Mon, 08 May 2023 08:33:46 GMT

GET
H2 200 a6e8f52c353c6bb2.css
observablehq.com/_next/static/css/ 123 KB
22 KB 50ms
50ms Stylesheet
text/css 2606:4700:10::6816:14dc
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://observablehq.com/_next/static/css/a6e8f52c353c6bb2.css

Requested by

Host: observablehq.com
URL: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2606:4700:10::6816:14dc , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

27333749072042eebf5eab75022ec4d663b07c92de8e078e162e2c1aa38b02c9

Security Headers

Name

Value

Content-Security-Policy

default-src 'self' https://api.observablehq.com https://events.observablehq.com https://static.observablehq.com https://observablehq.com https://*.static.observableusercontent.com; connect-src 'self' https://api.observablehq.com https://events.observablehq.com https://static.observablehq.com wss://ws.observablehq.com https://connector.observableusercontent.com https://js.stripe.com https://*.ingest.sentry.io https://www.google-analytics.com https://stats.g.doubleclick.net/j/collect https://www.googleapis.com https://graph.microsoft.com https://*.clarity.ms https://*.contentful.com; font-src https://fonts.gstatic.com; frame-ancestors 'none'; frame-src https://observablehq.com https://observablehq.com/embed/ https://*.static.observableusercontent.com https://js.stripe.com https://www.youtube.com/embed/ https://docs.google.com data: blob:; img-src https://api.observablehq.com https://*.static.observableusercontent.com https://static.observablehq.com https://observablehq.com https://*.githubusercontent.com https://*.stripe.com https://avatars.observableusercontent.com https://www.google-analytics.com https://www.google.com/ads/ga-audiences https://pubads.g.doubleclick.net static.observableusercontent.com https://images.ctfassets.net https://*.amazonaws.com data: blob:; manifest-src 'none'; media-src https://static.observablehq.com https://videos.ctfassets.net; object-src 'none'; script-src 'self' 'sha256-wJDBOMfNtxwDQqRmEr8s4iJJaDijupcm37ZsNBHHxSY=' 'sha256-UJ7XRVoD2oZRK3RRMLdPrdHA+LguX3UEXAZ6hVbuYIk=' https://static.observablehq.com https://www.google-analytics.com https://www.googleapis.com https://apis.google.com https://js.stripe.com https://*.clarity.ms; style-src https://static.observablehq.com https://observablehq.com https://fonts.googleapis.com 'unsafe-inline'; worker-src https://observablehq.com

Strict-Transport-Security

max-age=86400; includeSubDomains

Request headers

accept-language: en-GB,en;q=0.9
Referer: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

date: Mon, 08 May 2023 08:33:46 GMT
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Response headers

date: Mon, 08 May 2023 08:33:46 GMT
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Protocol

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Server

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Protocol

Security

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Server

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101ms Script
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Show headers Download Go to

Full URL

https://observablehq.com/_next/static/chunks/9660-a32a3efa0bad77c3.js

Requested by

Host: observablehq.com
URL: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript

Protocol

Security

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Server

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Response headers

date: Mon, 08 May 2023 08:33:46 GMT
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General

Check archive.org

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Full URL

https://observablehq.com/_next/static/chunks/pages/%5Bat%5D/%5B...specifiers%5D-946090e8c3cac578.js

Requested by

Host: observablehq.com
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Protocol

Security

TLS 1.3, , AES_128_GCM

Server

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Response headers

date: Mon, 08 May 2023 08:33:46 GMT
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GET
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General

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Full URL

https://observablehq.com/_next/static/1CYdd_-3cTM91u9BixqDZ/_buildManifest.js

Requested by

Host: observablehq.com
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Protocol

Security

TLS 1.3, , AES_128_GCM

Server

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Response headers

date: Mon, 08 May 2023 08:33:46 GMT
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General

Check archive.org

Show headers Download Go to

Full URL

https://observablehq.com/_next/static/1CYdd_-3cTM91u9BixqDZ/_ssgManifest.js

Requested by

Host: observablehq.com
URL: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

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General

Check archive.org

Show headers Download Go to Show image

Full URL: data:truncated
Protocol: DATA
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General

Check archive.org

Show headers Download Go to

Full URL

https://fonts.googleapis.com/css2?family=Source+Serif+Pro:ital,wght@0,400;0,600;0,700;1,400;1,600;1,700&display=swap

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Protocol

Security

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Response headers

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General

Check archive.org

Show headers Download Go to

Full URL

https://o299802.ingest.sentry.io/api/5593183/envelope/?sentry_key=ca9eac14b9164458a334243bb3c08c45&sentry_version=7&sentry_client=sentry.javascript.nextjs%2F7.38.0

Requested by

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Protocol

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Response headers

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GET
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fonts.gstatic.com/s/sourceserifpro/v15/ 20 KB
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General

Check archive.org

Show headers Download Go to

Full URL

https://fonts.gstatic.com/s/sourceserifpro/v15/neIXzD-0qpwxpaWvjeD0X88SAOeasc8btSyqxA.woff2

Requested by

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Protocol

Security

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Response headers

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Full URL

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Full URL

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Full URL

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Full URL

https://observablehq.com/_next/static/chunks/6538-3084ef5784c27d39.js

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5 KB 53ms
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General

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Show headers Download Go to

Full URL

https://observablehq.com/_next/static/chunks/4905-22b2e4923958eb6a.js

Requested by

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image/avif 2600:9000:21f3:2a00:10:f2df:eb80:93a1
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://avatars.observableusercontent.com/avatar/3d8000aa2ff6515179603ce3451b0104272bd8b602dd87bb09f033573d6fa6a5?s=60&format=avif

Requested by

Host: observablehq.com
URL: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript

Protocol

HTTP/1.1

Security

TLS 1.3, , AES_128_GCM

Server

2600:9000:21f3:2a00:10:f2df:eb80:93a1 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Cowboy /

Resource Hash

68be2499726d8c9dc1964b9007d7a5af7eda9347459c72056be8e0548101d02a

Security Headers

Name	Value
Content-Security-Policy	default-src 'none'
Strict-Transport-Security	max-age=86400; includeSubDomains; preload
X-Content-Type-Options	nosniff
X-Frame-Options	deny

Request headers

accept-language: en-GB,en;q=0.9
Referer: https://observablehq.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

Content-Security-Policy: default-src 'none'
Strict-Transport-Security: max-age=86400; includeSubDomains; preload
X-Content-Type-Options: nosniff
Date: Sun, 19 Mar 2023 08:00:41 GMT
Via: 1.1 vegur, 1.1 1bf129b8787cf2e96d3bce725554e4d4.cloudfront.net (CloudFront)
X-Amz-Cf-Pop: FRA2-C2
Age: 4321986
X-Cache: Hit from cloudfront
Connection: keep-alive
Content-Length: 915
Server: Cowboy
ETag: "393-m7Q2QYGbmEt8B37X+rpZJmIyxv8"
X-Frame-Options: deny
Content-Type: image/avif
Cache-Control: public, max-age=31536000, immutable
X-Amz-Cf-Id: kMOGpuItYJgT0o5fAAiNsJwRnleVy8sDvGGJ6DkEmXupp6g0uDgY1w==

GET
H/1.1 200
OK 3ddda207244e30a947ff3cd2852cc7d52194394a6709b59cb4ac487ff751c216
avatars.observableusercontent.com/avatar/ 920 B
2 KB 226ms
44ms Image
image/avif 2600:9000:21f3:2a00:10:f2df:eb80:93a1
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://avatars.observableusercontent.com/avatar/3ddda207244e30a947ff3cd2852cc7d52194394a6709b59cb4ac487ff751c216?s=60&format=avif

Requested by

Host: observablehq.com
URL: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript

Protocol

HTTP/1.1

Security

TLS 1.3, , AES_128_GCM

Server

2600:9000:21f3:2a00:10:f2df:eb80:93a1 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Cowboy /

Resource Hash

9b44a46e84e45a7b4cf326f044edefc63dff3e77cffae6ddc03e500239676cfd

Security Headers

Name	Value
Content-Security-Policy	default-src 'none'
Strict-Transport-Security	max-age=86400; includeSubDomains; preload
X-Content-Type-Options	nosniff
X-Frame-Options	deny

Request headers

accept-language: en-GB,en;q=0.9
Referer: https://observablehq.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

Content-Security-Policy: default-src 'none'
Strict-Transport-Security: max-age=86400; includeSubDomains; preload
X-Content-Type-Options: nosniff
Date: Sat, 29 Apr 2023 09:00:56 GMT
Via: 1.1 vegur, 1.1 03d509e8374e9f42668961b5e0201348.cloudfront.net (CloudFront)
X-Amz-Cf-Pop: FRA2-C2
Age: 775971
X-Cache: Hit from cloudfront
Connection: keep-alive
Content-Length: 920
Server: Cowboy
ETag: "398-ua21BVmbJW+tD1sXkGaZ3+E0aGs"
X-Frame-Options: deny
Content-Type: image/avif
Cache-Control: public, max-age=31536000, immutable
X-Amz-Cf-Id: qaDQflxzxDbMB6EDC7QTRBKhQi5XywZyLbSHlNL6hMiHoj9SI2Oztg==

GET
H/1.1 200
OK 16798d7c40be0311619918097a95e283dd1c432e23392674264f3e2194d225fa
avatars.observableusercontent.com/avatar/ 2 KB
3 KB 227ms
46ms Image
image/avif 2600:9000:21f3:2a00:10:f2df:eb80:93a1
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://avatars.observableusercontent.com/avatar/16798d7c40be0311619918097a95e283dd1c432e23392674264f3e2194d225fa?s=60&format=avif

Requested by

Host: observablehq.com
URL: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript

Protocol

HTTP/1.1

Security

TLS 1.3, , AES_128_GCM

Server

2600:9000:21f3:2a00:10:f2df:eb80:93a1 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Cowboy /

Resource Hash

17081f34bd8b87c1e30ad964c6d0de781511c64ca47d2b0578a21e7219b13468

Security Headers

Name	Value
Content-Security-Policy	default-src 'none'
Strict-Transport-Security	max-age=86400; includeSubDomains; preload
X-Content-Type-Options	nosniff
X-Frame-Options	deny

Request headers

accept-language: en-GB,en;q=0.9
Referer: https://observablehq.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

Content-Security-Policy: default-src 'none'
Strict-Transport-Security: max-age=86400; includeSubDomains; preload
X-Content-Type-Options: nosniff
Date: Wed, 19 Apr 2023 23:44:08 GMT
Content-Encoding: gzip
Via: 1.1 vegur, 1.1 2afacc6ad96dbba3f0b477cd95f16458.cloudfront.net (CloudFront)
X-Amz-Cf-Pop: FRA2-C2
Age: 1586979
X-Cache: Hit from cloudfront
Connection: keep-alive
Content-Length: 2189
Server: Cowboy
ETag: "88f-EUOEhei+nhgknyZXwqgr605FvZI"
X-Frame-Options: deny
Content-Type: image/avif
Cache-Control: public, max-age=31536000, immutable
X-Amz-Cf-Id: _cr9AmUUOL4tmg2BP3oezhRU7SlD452noZq_i2w_htZrf1nobr6Qeg==

GET
H/1.1 200
OK e3bebb4ad499da5d3678b4b70dec71e4984856b82c3e906d6976450d0768faed
avatars.observableusercontent.com/avatar/ 967 B
2 KB 228ms
44ms Image
image/avif 2600:9000:21f3:2a00:10:f2df:eb80:93a1
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://avatars.observableusercontent.com/avatar/e3bebb4ad499da5d3678b4b70dec71e4984856b82c3e906d6976450d0768faed?s=60&format=avif

Requested by

Host: observablehq.com
URL: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript

Protocol

HTTP/1.1

Security

TLS 1.3, , AES_128_GCM

Server

2600:9000:21f3:2a00:10:f2df:eb80:93a1 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Cowboy /

Resource Hash

b4eb3aa5cf23e1b497a5e4dc732e65598cf475fa1066dbd96c380ac1f912b18d

Security Headers

Name	Value
Content-Security-Policy	default-src 'none'
Strict-Transport-Security	max-age=86400; includeSubDomains; preload
X-Content-Type-Options	nosniff
X-Frame-Options	deny

Request headers

accept-language: en-GB,en;q=0.9
Referer: https://observablehq.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

Content-Security-Policy: default-src 'none'
Strict-Transport-Security: max-age=86400; includeSubDomains; preload
X-Content-Type-Options: nosniff
Date: Fri, 07 Apr 2023 09:11:05 GMT
Via: 1.1 vegur, 1.1 eb1a8c1b1275e33a016e623478052110.cloudfront.net (CloudFront)
X-Amz-Cf-Pop: FRA2-C2
Age: 2676162
X-Cache: Hit from cloudfront
Connection: keep-alive
Content-Length: 967
Server: Cowboy
ETag: "3c7-3h5Kozqy7gtBYgoKID7GxchgTqY"
X-Frame-Options: deny
Content-Type: image/avif
Cache-Control: public, max-age=31536000, immutable
X-Amz-Cf-Id: 8uaqk5JlAIX0mIsqtCmQMHUV9nN5Fj2_C2A9wa5nVptMOiWYztBz-g==

GET
H/1.1 200
OK e615e819ce83d43faef607e48c53c5ff63943aa0ba9f5848499bd02fef7396f4
avatars.observableusercontent.com/avatar/ 701 B
1 KB 229ms
45ms Image
image/avif 2600:9000:21f3:2a00:10:f2df:eb80:93a1
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://avatars.observableusercontent.com/avatar/e615e819ce83d43faef607e48c53c5ff63943aa0ba9f5848499bd02fef7396f4?s=60&format=avif

Requested by

Host: observablehq.com
URL: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript

Protocol

HTTP/1.1

Security

TLS 1.3, , AES_128_GCM

Server

2600:9000:21f3:2a00:10:f2df:eb80:93a1 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Cowboy /

Resource Hash

3cdad9520c57a7d57fbcc2f3ed7e7a16ea05f302dade68fea575004b77ec3dff

Security Headers

Name	Value
Content-Security-Policy	default-src 'none'
Strict-Transport-Security	max-age=86400; includeSubDomains; preload
X-Content-Type-Options	nosniff
X-Frame-Options	deny

Request headers

accept-language: en-GB,en;q=0.9
Referer: https://observablehq.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

Content-Security-Policy: default-src 'none'
Strict-Transport-Security: max-age=86400; includeSubDomains; preload
X-Content-Type-Options: nosniff
Date: Sat, 29 Apr 2023 09:00:56 GMT
Via: 1.1 vegur, 1.1 06d36e78e8dfd9468327f09115761a9e.cloudfront.net (CloudFront)
X-Amz-Cf-Pop: FRA2-C2
Age: 775971
X-Cache: Hit from cloudfront
Connection: keep-alive
Content-Length: 701
Server: Cowboy
ETag: "2bd-vx2948mX4gJxItsH4TfkOmA0uZM"
X-Frame-Options: deny
Content-Type: image/avif
Cache-Control: public, max-age=31536000, immutable
X-Amz-Cf-Id: NIaqSxD5q3gZowSNu6eGZt0Svfr3Lz3PwS145zvonpD3GxQPy1cXCw==

GET
H/1.1 200
OK b06f29c9ebba5f82bb96583af4e514bf21938607389bae332427fac99185246f
avatars.observableusercontent.com/avatar/ 908 B
1 KB 44ms
43ms Image
image/avif 2600:9000:21f3:2a00:10:f2df:eb80:93a1
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://avatars.observableusercontent.com/avatar/b06f29c9ebba5f82bb96583af4e514bf21938607389bae332427fac99185246f?s=60&format=avif

Requested by

Host: observablehq.com
URL: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript

Protocol

HTTP/1.1

Security

TLS 1.3, , AES_128_GCM

Server

2600:9000:21f3:2a00:10:f2df:eb80:93a1 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Cowboy /

Resource Hash

29a622bf67aa7638b76c4fac868f11513a07efff8677b2f35e24fa21567beb84

Security Headers

Name	Value
Content-Security-Policy	default-src 'none'
Strict-Transport-Security	max-age=86400; includeSubDomains; preload
X-Content-Type-Options	nosniff
X-Frame-Options	deny

Request headers

accept-language: en-GB,en;q=0.9
Referer: https://observablehq.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

Content-Security-Policy: default-src 'none'
Strict-Transport-Security: max-age=86400; includeSubDomains; preload
X-Content-Type-Options: nosniff
Date: Tue, 04 Apr 2023 15:26:53 GMT
Via: 1.1 vegur, 1.1 1bf129b8787cf2e96d3bce725554e4d4.cloudfront.net (CloudFront)
X-Amz-Cf-Pop: FRA2-C2
Age: 2912814
X-Cache: Hit from cloudfront
Connection: keep-alive
Content-Length: 908
Server: Cowboy
ETag: "38c-jR+29MTF83LgDByQHJpaTNG+Mt8"
X-Frame-Options: deny
Content-Type: image/avif
Cache-Control: public, max-age=31536000, immutable
X-Amz-Cf-Id: -UmybPzC2HC55MR5Ypn2feeO7NSsA_Sa6qpTJUm0zl4asBYkRY16wA==

GET
H/1.1 200
OK bc9bae4b7e30062b343ae978a13454e29cd3f2daf3a800d0024043686ddf094b
avatars.observableusercontent.com/avatar/ 823 B
1 KB 48ms
48ms Image
image/avif 2600:9000:21f3:2a00:10:f2df:eb80:93a1
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://avatars.observableusercontent.com/avatar/bc9bae4b7e30062b343ae978a13454e29cd3f2daf3a800d0024043686ddf094b?s=60&format=avif

Requested by

Host: observablehq.com
URL: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript

Protocol

HTTP/1.1

Security

TLS 1.3, , AES_128_GCM

Server

2600:9000:21f3:2a00:10:f2df:eb80:93a1 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Cowboy /

Resource Hash

18f337fc2d58d8903de77acb9f7a23b3e0e06f6f33f65bc0c59fe285e5018370

Security Headers

Name	Value
Content-Security-Policy	default-src 'none'
Strict-Transport-Security	max-age=86400; includeSubDomains; preload
X-Content-Type-Options	nosniff
X-Frame-Options	deny

Request headers

accept-language: en-GB,en;q=0.9
Referer: https://observablehq.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

Content-Security-Policy: default-src 'none'
Strict-Transport-Security: max-age=86400; includeSubDomains; preload
X-Content-Type-Options: nosniff
Date: Fri, 17 Feb 2023 07:19:13 GMT
Via: 1.1 vegur, 1.1 03d509e8374e9f42668961b5e0201348.cloudfront.net (CloudFront)
X-Amz-Cf-Pop: FRA2-C2
Age: 6916474
X-Cache: Hit from cloudfront
Connection: keep-alive
Content-Length: 823
Server: Cowboy
ETag: "337-gOtSVis6eewZRSuU2Uw+t6Nzits"
X-Frame-Options: deny
Content-Type: image/avif
Cache-Control: public, max-age=31536000, immutable
X-Amz-Cf-Id: oaAJtl-unqhsEpaKDkP_YBWkr1nf7RAJtbdshXuOpvf5hpJR7FwxMg==

GET
H/1.1 200
OK 84aa7fe27a61a7eb63cab428f829f21b6b4ba8401826367836affa25020a415e
avatars.observableusercontent.com/avatar/ 300 B
927 B 48ms
48ms Image
image/avif 2600:9000:21f3:2a00:10:f2df:eb80:93a1
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://avatars.observableusercontent.com/avatar/84aa7fe27a61a7eb63cab428f829f21b6b4ba8401826367836affa25020a415e?s=60&format=avif

Requested by

Host: observablehq.com
URL: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript

Protocol

HTTP/1.1

Security

TLS 1.3, , AES_128_GCM

Server

2600:9000:21f3:2a00:10:f2df:eb80:93a1 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Cowboy /

Resource Hash

9996bfd40ce13d43c165673490137973a60901e467cb1265796c69db488e7a71

Security Headers

Name	Value
Content-Security-Policy	default-src 'none'
Strict-Transport-Security	max-age=86400; includeSubDomains; preload
X-Content-Type-Options	nosniff
X-Frame-Options	deny

Request headers

accept-language: en-GB,en;q=0.9
Referer: https://observablehq.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

Content-Security-Policy: default-src 'none'
Strict-Transport-Security: max-age=86400; includeSubDomains; preload
X-Content-Type-Options: nosniff
Date: Wed, 12 Apr 2023 14:06:05 GMT
Via: 1.1 vegur, 1.1 2afacc6ad96dbba3f0b477cd95f16458.cloudfront.net (CloudFront)
X-Amz-Cf-Pop: FRA2-C2
Age: 2226462
X-Cache: Hit from cloudfront
Connection: keep-alive
Content-Length: 300
Server: Cowboy
ETag: "12c-4MIcW3pYufjkduZegucM+YkQ7pA"
X-Frame-Options: deny
Content-Type: image/avif
Cache-Control: public, max-age=31536000, immutable
X-Amz-Cf-Id: 1ai-QtWfG3Z3RjFq34lLRx0wwwGWRPtV1uKcltdfSoumP00ZTCMpTw==

GET
H/1.1 200
OK 11a2a788174af11f25180be70f24ce9056d3192c738f35a93dd8acb684eb00d1
avatars.observableusercontent.com/avatar/ 415 B
1 KB 47ms
47ms Image
image/avif 2600:9000:21f3:2a00:10:f2df:eb80:93a1
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://avatars.observableusercontent.com/avatar/11a2a788174af11f25180be70f24ce9056d3192c738f35a93dd8acb684eb00d1?s=60&format=avif

Requested by

Host: observablehq.com
URL: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript

Protocol

HTTP/1.1

Security

TLS 1.3, , AES_128_GCM

Server

2600:9000:21f3:2a00:10:f2df:eb80:93a1 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Cowboy /

Resource Hash

4169ab97074bd1b1034ae849e1c7e46a2f3ab1f3d6878c50d4d830f087539d90

Security Headers

Name	Value
Content-Security-Policy	default-src 'none'
Strict-Transport-Security	max-age=86400; includeSubDomains; preload
X-Content-Type-Options	nosniff
X-Frame-Options	deny

Request headers

accept-language: en-GB,en;q=0.9
Referer: https://observablehq.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

Content-Security-Policy: default-src 'none'
Strict-Transport-Security: max-age=86400; includeSubDomains; preload
X-Content-Type-Options: nosniff
Date: Wed, 12 Apr 2023 14:06:05 GMT
Via: 1.1 vegur, 1.1 eb1a8c1b1275e33a016e623478052110.cloudfront.net (CloudFront)
X-Amz-Cf-Pop: FRA2-C2
Age: 2226462
X-Cache: Hit from cloudfront
Connection: keep-alive
Content-Length: 415
Server: Cowboy
ETag: "19f-m6gW5OQDKNX59457Wad7xaVSO7A"
X-Frame-Options: deny
Content-Type: image/avif
Cache-Control: public, max-age=31536000, immutable
X-Amz-Cf-Id: 4vu5vGHmkRgex97V3RVDLKzgCyVlhAfcJoeAc3csxiQFqiK7_ppLAQ==

GET
H/1.1 200
OK 28b8518718dc3e70bed3a8256215864c8ac22777155e21dd5564f285665f60ae
avatars.observableusercontent.com/avatar/ 890 B
1 KB 47ms
46ms Image
image/avif 2600:9000:21f3:2a00:10:f2df:eb80:93a1
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://avatars.observableusercontent.com/avatar/28b8518718dc3e70bed3a8256215864c8ac22777155e21dd5564f285665f60ae?s=60&format=avif

Requested by

Host: observablehq.com
URL: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript

Protocol

HTTP/1.1

Security

TLS 1.3, , AES_128_GCM

Server

2600:9000:21f3:2a00:10:f2df:eb80:93a1 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Cowboy /

Resource Hash

03c4755300fe72016a2aa5266af62ba403bd0cbf116c339121c23b3028c58e56

Security Headers

Name	Value
Content-Security-Policy	default-src 'none'
Strict-Transport-Security	max-age=86400; includeSubDomains; preload
X-Content-Type-Options	nosniff
X-Frame-Options	deny

Request headers

accept-language: en-GB,en;q=0.9
Referer: https://observablehq.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

Content-Security-Policy: default-src 'none'
Strict-Transport-Security: max-age=86400; includeSubDomains; preload
X-Content-Type-Options: nosniff
Date: Fri, 31 Mar 2023 05:23:11 GMT
Via: 1.1 vegur, 1.1 06d36e78e8dfd9468327f09115761a9e.cloudfront.net (CloudFront)
X-Amz-Cf-Pop: FRA2-C2
Age: 3294636
X-Cache: Hit from cloudfront
Connection: keep-alive
Content-Length: 890
Server: Cowboy
ETag: "37a-RQKhc3+DBPQosLY67ZNGMbLl8QU"
X-Frame-Options: deny
Content-Type: image/avif
Cache-Control: public, max-age=31536000, immutable
X-Amz-Cf-Id: qs8crxDbsBASKl13SNh2ST8aQm9IlVFtCbuAIWHspYBsRO3JBODzZQ==

GET
H2 200 adc3f106f664cdac33eed304a7bdde8a92c7df5df26d2e456dcdc07d7364ec79.jpg
static.observableusercontent.com/thumbnail/ 25 KB
25 KB 281ms
51ms Image
image/jpeg 2600:9000:2490:1400:1c:df24:ee80:93a1
AMAZON-02

General

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Full URL: https://static.observableusercontent.com/thumbnail/adc3f106f664cdac33eed304a7bdde8a92c7df5df26d2e456dcdc07d7364ec79.jpg
Requested by: Host: observablehq.com
URL: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:1400:1c:df24:ee80:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: adc3f106f664cdac33eed304a7bdde8a92c7df5df26d2e456dcdc07d7364ec79

Request headers

accept-language: en-GB,en;q=0.9
Referer: https://observablehq.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

date: Wed, 19 Apr 2023 14:43:20 GMT
via: 1.1 c0c6d7afa25d841027d75444425d2010.cloudfront.net (CloudFront)
last-modified: Tue, 18 Apr 2023 16:42:19 GMT
server: AmazonS3
x-amz-cf-pop: FRA56-P6
age: 1619428
etag: "074adc45d923b01e915f046c18c390e6"
x-amz-server-side-encryption: AES256
x-cache: Hit from cloudfront
content-type: image/jpeg
cache-control: public, max-age=31536000, immutable
accept-ranges: bytes
content-length: 25118
x-amz-cf-id: 3O175Jdf7qfuZMJSvpAF271ran6hmeRbbUU5Iuj1Oy0bQ0drm_DcgA==

GET
H2 200 0f5407db81f821bea316a27c8a11153a71fab69b73912e05dbcb72623e1534a8.jpg
static.observableusercontent.com/thumbnail/ 65 KB
65 KB 329ms
98ms Image
image/jpeg 2600:9000:2490:1400:1c:df24:ee80:93a1
AMAZON-02

General

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Full URL: https://static.observableusercontent.com/thumbnail/0f5407db81f821bea316a27c8a11153a71fab69b73912e05dbcb72623e1534a8.jpg
Requested by: Host: observablehq.com
URL: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:1400:1c:df24:ee80:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: 0f5407db81f821bea316a27c8a11153a71fab69b73912e05dbcb72623e1534a8

Request headers

accept-language: en-GB,en;q=0.9
Referer: https://observablehq.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

date: Sat, 29 Apr 2023 01:32:07 GMT
via: 1.1 c0c6d7afa25d841027d75444425d2010.cloudfront.net (CloudFront)
last-modified: Tue, 25 Apr 2023 04:44:10 GMT
server: AmazonS3
x-amz-cf-pop: FRA56-P6
age: 802900
etag: "572c62cdc23332da174696fc1d8cc39d"
x-amz-server-side-encryption: AES256
x-cache: Hit from cloudfront
content-type: image/jpeg
cache-control: public, max-age=31536000, immutable
accept-ranges: bytes
content-length: 66607
x-amz-cf-id: IQfI0rowPSPjpwZGCl4v_mNfdJGKTI9KeVZog667H1JKvgwtblKuIA==

GET
H2 200 5caae868bb14c490c502c3bd71c9d15003a9426377f385ae09a01adb62539d99.jpg
static.observableusercontent.com/thumbnail/ 38 KB
38 KB 373ms
142ms Image
image/jpeg 2600:9000:2490:1400:1c:df24:ee80:93a1
AMAZON-02

General

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Full URL: https://static.observableusercontent.com/thumbnail/5caae868bb14c490c502c3bd71c9d15003a9426377f385ae09a01adb62539d99.jpg
Requested by: Host: observablehq.com
URL: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:1400:1c:df24:ee80:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: 5caae868bb14c490c502c3bd71c9d15003a9426377f385ae09a01adb62539d99

Request headers

accept-language: en-GB,en;q=0.9
Referer: https://observablehq.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

date: Fri, 17 Feb 2023 23:50:49 GMT
via: 1.1 c0c6d7afa25d841027d75444425d2010.cloudfront.net (CloudFront)
last-modified: Fri, 17 Feb 2023 23:50:47 GMT
server: AmazonS3
x-amz-cf-pop: FRA56-P6
age: 6856979
etag: "cb8db3955cfb36a9cb61aed07f3a8700"
x-amz-server-side-encryption: AES256
x-cache: Hit from cloudfront
content-type: image/jpeg
cache-control: public, max-age=31536000, immutable
accept-ranges: bytes
content-length: 38753
x-amz-cf-id: Jb0w3sL_B5S_vGAN6f4OlResE4BuSw_TTOqzsneHbROm8ZbWcw2thA==

GET
H2 200 794c6bd0aa4a316ed701f66e3d9e81db0fdb5b547f9c08869de113220ae41654.jpg
static.observableusercontent.com/thumbnail/ 17 KB
18 KB 386ms
156ms Image
image/jpeg 2600:9000:2490:1400:1c:df24:ee80:93a1
AMAZON-02

General

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Full URL: https://static.observableusercontent.com/thumbnail/794c6bd0aa4a316ed701f66e3d9e81db0fdb5b547f9c08869de113220ae41654.jpg
Requested by: Host: observablehq.com
URL: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:1400:1c:df24:ee80:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: 794c6bd0aa4a316ed701f66e3d9e81db0fdb5b547f9c08869de113220ae41654

Request headers

accept-language: en-GB,en;q=0.9
Referer: https://observablehq.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

date: Tue, 28 Feb 2023 22:39:53 GMT
via: 1.1 c0c6d7afa25d841027d75444425d2010.cloudfront.net (CloudFront)
last-modified: Tue, 28 Feb 2023 22:39:52 GMT
server: AmazonS3
x-amz-cf-pop: FRA56-P6
age: 5910835
etag: "e498ff9d02905c8bc193c8e5f7f1e985"
x-amz-server-side-encryption: AES256
x-cache: Hit from cloudfront
content-type: image/jpeg
cache-control: public, max-age=31536000, immutable
accept-ranges: bytes
content-length: 17571
x-amz-cf-id: PIH2WDAdvHel_8JYI35GECWsoLCWaNVP1l3T_dZ_5-6qr4HtaLh2OA==

GET
H2 200 a7b28e9d61069d84425ea82114d3f078cae99e1211dc7f6bd1ecd6b6dc4418ca.jpg
static.observableusercontent.com/thumbnail/ 18 KB
19 KB 319ms
89ms Image
image/jpeg 2600:9000:2490:1400:1c:df24:ee80:93a1
AMAZON-02

General

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Full URL: https://static.observableusercontent.com/thumbnail/a7b28e9d61069d84425ea82114d3f078cae99e1211dc7f6bd1ecd6b6dc4418ca.jpg
Requested by: Host: observablehq.com
URL: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:1400:1c:df24:ee80:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: a7b28e9d61069d84425ea82114d3f078cae99e1211dc7f6bd1ecd6b6dc4418ca

Request headers

accept-language: en-GB,en;q=0.9
Referer: https://observablehq.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

date: Sun, 09 Apr 2023 19:39:12 GMT
via: 1.1 c0c6d7afa25d841027d75444425d2010.cloudfront.net (CloudFront)
last-modified: Sat, 08 Apr 2023 12:25:42 GMT
server: AmazonS3
x-amz-cf-pop: FRA56-P6
age: 2465676
etag: "8dca3de746d3b229b0237df393bed1e2"
x-amz-server-side-encryption: AES256
x-cache: Hit from cloudfront
content-type: image/jpeg
cache-control: public, max-age=31536000, immutable
accept-ranges: bytes
content-length: 18927
x-amz-cf-id: a30EOjJWCtapT7Op2RaVCZWuPIn4CnhpXzsAA9CMrp11mdX5-GGEFw==

GET
H2 200 0f35566b3755f142daf2ad71e55f781a2ee731688a1a6cac131457cb2e1b4c8c.jpg
static.observableusercontent.com/thumbnail/ 25 KB
25 KB 136ms
135ms Image
image/jpeg 2600:9000:2490:1400:1c:df24:ee80:93a1
AMAZON-02

General

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Show headers Download Go to Show image

Full URL: https://static.observableusercontent.com/thumbnail/0f35566b3755f142daf2ad71e55f781a2ee731688a1a6cac131457cb2e1b4c8c.jpg
Requested by: Host: observablehq.com
URL: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:1400:1c:df24:ee80:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: 0f35566b3755f142daf2ad71e55f781a2ee731688a1a6cac131457cb2e1b4c8c

Request headers

accept-language: en-GB,en;q=0.9
Referer: https://observablehq.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

date: Wed, 12 Apr 2023 11:43:42 GMT
via: 1.1 c0c6d7afa25d841027d75444425d2010.cloudfront.net (CloudFront)
last-modified: Wed, 12 Apr 2023 10:37:01 GMT
server: AmazonS3
x-amz-cf-pop: FRA56-P6
age: 2235006
etag: "5bef0df1a093660f27d81e0832a961ae"
x-amz-server-side-encryption: AES256
x-cache: Hit from cloudfront
content-type: image/jpeg
cache-control: public, max-age=31536000, immutable
accept-ranges: bytes
content-length: 25263
x-amz-cf-id: gNVhAHFYceUvLecZDwjMFfBu_yDprodkQ708ZVxFbv_wBoJe9iZfpw==

GET
H2 200 a2d6adaf2adcca77c9a51fb974c2535ad7d831162c08acef01f0872dd2efd5c3.jpg
static.observableusercontent.com/thumbnail/ 37 KB
37 KB 144ms
144ms Image
image/jpeg 2600:9000:2490:1400:1c:df24:ee80:93a1
AMAZON-02

General

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Full URL: https://static.observableusercontent.com/thumbnail/a2d6adaf2adcca77c9a51fb974c2535ad7d831162c08acef01f0872dd2efd5c3.jpg
Requested by: Host: observablehq.com
URL: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:1400:1c:df24:ee80:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: a2d6adaf2adcca77c9a51fb974c2535ad7d831162c08acef01f0872dd2efd5c3

Request headers

accept-language: en-GB,en;q=0.9
Referer: https://observablehq.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

date: Wed, 15 Mar 2023 16:59:21 GMT
via: 1.1 c0c6d7afa25d841027d75444425d2010.cloudfront.net (CloudFront)
last-modified: Tue, 14 Mar 2023 06:12:16 GMT
server: AmazonS3
x-amz-cf-pop: FRA56-P6
age: 4635267
etag: "0bb1cf57fc318cad7ec36ecdcad9796e"
x-amz-server-side-encryption: AES256
x-cache: Hit from cloudfront
content-type: image/jpeg
cache-control: public, max-age=31536000, immutable
accept-ranges: bytes
content-length: 37431
x-amz-cf-id: OH4a1JfVryE5xE01pVP_p1rBbr7lpwn2jw3nPeWTh4eoIanvnAfl3w==

GET
H2 200 af591ac89f70c3ff75851bad46200060fa20ecc24750ada81ff92264e6d27097.jpg
static.observableusercontent.com/thumbnail/ 35 KB
35 KB 154ms
153ms Image
image/jpeg 2600:9000:2490:1400:1c:df24:ee80:93a1
AMAZON-02

General

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Full URL: https://static.observableusercontent.com/thumbnail/af591ac89f70c3ff75851bad46200060fa20ecc24750ada81ff92264e6d27097.jpg
Requested by: Host: observablehq.com
URL: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:1400:1c:df24:ee80:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: af591ac89f70c3ff75851bad46200060fa20ecc24750ada81ff92264e6d27097

Request headers

accept-language: en-GB,en;q=0.9
Referer: https://observablehq.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

date: Tue, 04 Apr 2023 11:54:10 GMT
via: 1.1 c0c6d7afa25d841027d75444425d2010.cloudfront.net (CloudFront)
last-modified: Tue, 04 Apr 2023 01:18:55 GMT
server: AmazonS3
x-amz-cf-pop: FRA56-P6
age: 2925578
etag: "db6f94c56db5227cfe432db0e8bd57ee"
x-amz-server-side-encryption: AES256
x-cache: Hit from cloudfront
content-type: image/jpeg
cache-control: public, max-age=31536000, immutable
accept-ranges: bytes
content-length: 35895
x-amz-cf-id: s-unQAqE5tvEnYulGQXSXI-MH5Otvsa9eDCt9fqabv3iTX3tYjSb-w==

GET
H2 200 worker-d0e322c0.css
static.observableusercontent.com/next/ Frame 5134 7 KB
3 KB 254ms
43ms Stylesheet
text/css 2600:9000:2490:1400:1c:df24:ee80:93a1
AMAZON-02

General

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Full URL: https://static.observableusercontent.com/next/worker-d0e322c0.css
Requested by: Host: panningforbacon.static.observableusercontent.com
URL: https://panningforbacon.static.observableusercontent.com/next/worker-fd95503b.html
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:1400:1c:df24:ee80:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: c0f4798c1cdc547b8b44855e4f1b6d62a5406d33f27a194147c4fa62b95f27c2

Request headers

accept-language: en-GB,en;q=0.9
Referer: https://panningforbacon.static.observableusercontent.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

date: Wed, 12 Apr 2023 18:45:58 GMT
content-encoding: gzip
via: 1.1 c0c6d7afa25d841027d75444425d2010.cloudfront.net (CloudFront)
last-modified: Wed, 12 Apr 2023 18:35:30 GMT
server: AmazonS3
x-amz-cf-pop: FRA56-P6
age: 2209670
etag: W/"0e02facff8762c30ff61f5d2797e3837"
x-amz-server-side-encryption: AES256
vary: Accept-Encoding
x-cache: Hit from cloudfront
content-type: text/css; charset=utf-8
cache-control: public, max-age=31536000, immutable
x-amz-cf-id: H6TONRDcPVfoT4dLfu6tRJ6IGOWYpam4PUdYk1TWottFJAq51G7D9g==

GET
H2 200 worker-50055c3f.js Show response
static.observableusercontent.com/next/ Frame 5134 120 KB
38 KB 264ms
51ms Script
application/javascript 2600:9000:2490:1400:1c:df24:ee80:93a1
AMAZON-02

General

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Show headers Download Go to

Full URL: https://static.observableusercontent.com/next/worker-50055c3f.js
Requested by: Host: panningforbacon.static.observableusercontent.com
URL: https://panningforbacon.static.observableusercontent.com/next/worker-fd95503b.html
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:1400:1c:df24:ee80:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: ddaec46b48bb876821341e05c35958699cf7488b8eb695577f05567c2f58108a

Request headers

Referer: https://panningforbacon.static.observableusercontent.com/
Origin: https://panningforbacon.static.observableusercontent.com
accept-language: en-GB,en;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

date: Fri, 28 Apr 2023 14:45:28 GMT
content-encoding: gzip
via: 1.1 bfb5bffe90e3b0e760933a7a07d850ba.cloudfront.net (CloudFront)
x-amz-cf-pop: FRA56-P6
age: 841700
x-amz-server-side-encryption: AES256
x-cache: Hit from cloudfront
last-modified: Fri, 28 Apr 2023 01:52:13 GMT
server: AmazonS3
etag: W/"498cd26e173e8f4739bd9d2c0ca91c5b"
access-control-max-age: 3000
access-control-allow-methods: GET
content-type: application/javascript; charset=utf-8
access-control-allow-origin: *
cache-control: public, max-age=31536000, immutable
vary: Accept-Encoding,Origin,Access-Control-Request-Headers,Access-Control-Request-Method
x-amz-cf-id: Dz9nsMANfLNY9ey0mdYbu_NSQJZEo-l08pADpHcRZ4ZmLWdUJxfOsg==

GET
H2 200 6538-3084ef5784c27d39.js Show response
observablehq.com/_next/static/chunks/ 21 KB
8 KB 131ms
128ms Script
application/javascript 2606:4700:10::6816:14dc
CLOUDFLARENET

General

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Show headers Download Go to

Full URL

https://observablehq.com/_next/static/chunks/6538-3084ef5784c27d39.js

Requested by

Host: observablehq.com
URL: https://observablehq.com/_next/static/chunks/main-6d0739027f57dcdc.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2606:4700:10::6816:14dc , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

5e445cad613a753fba9ef29e5725ce9f27b9dc59b77692c6de826292dd1a02a6

Security Headers

Name

Value

Content-Security-Policy

default-src 'self' https://api.observablehq.com https://events.observablehq.com https://static.observablehq.com https://observablehq.com https://*.static.observableusercontent.com; connect-src 'self' https://api.observablehq.com https://events.observablehq.com https://static.observablehq.com wss://ws.observablehq.com https://connector.observableusercontent.com https://js.stripe.com https://*.ingest.sentry.io https://www.google-analytics.com https://stats.g.doubleclick.net/j/collect https://www.googleapis.com https://graph.microsoft.com https://*.clarity.ms https://*.contentful.com; font-src https://fonts.gstatic.com; frame-ancestors 'none'; frame-src https://observablehq.com https://observablehq.com/embed/ https://*.static.observableusercontent.com https://js.stripe.com https://www.youtube.com/embed/ https://docs.google.com data: blob:; img-src https://api.observablehq.com https://*.static.observableusercontent.com https://static.observablehq.com https://observablehq.com https://*.githubusercontent.com https://*.stripe.com https://avatars.observableusercontent.com https://www.google-analytics.com https://www.google.com/ads/ga-audiences https://pubads.g.doubleclick.net static.observableusercontent.com https://images.ctfassets.net https://*.amazonaws.com data: blob:; manifest-src 'none'; media-src https://static.observablehq.com https://videos.ctfassets.net; object-src 'none'; script-src 'self' 'sha256-wJDBOMfNtxwDQqRmEr8s4iJJaDijupcm37ZsNBHHxSY=' 'sha256-UJ7XRVoD2oZRK3RRMLdPrdHA+LguX3UEXAZ6hVbuYIk=' https://static.observablehq.com https://www.google-analytics.com https://www.googleapis.com https://apis.google.com https://js.stripe.com https://*.clarity.ms; style-src https://static.observablehq.com https://observablehq.com https://fonts.googleapis.com 'unsafe-inline'; worker-src https://observablehq.com

Strict-Transport-Security

max-age=86400; includeSubDomains

Request headers

accept-language: en-GB,en;q=0.9
Referer: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

date: Mon, 08 May 2023 08:33:46 GMT
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Protocol

Security

TLS 1.3, , AES_128_GCM

Server

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Reverse DNS

Software

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Resource Hash

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Security Headers

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Request headers

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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

strict-transport-security: max-age=31536000
date: Mon, 08 May 2023 08:33:47 GMT
content-encoding: gzip
x-content-type-options: nosniff
cross-origin-resource-policy: cross-origin
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server: ESF
cross-origin-opener-policy: same-origin-allow-popups
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link: <https://fonts.gstatic.com>; rel=preconnect; crossorigin
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GET
H2 200 inputs.min.js Show response
cdn.observableusercontent.com/npm/@observablehq/inputs@0.10.4/dist/ Frame 5134 26 KB
10 KB 141ms
54ms Script
application/javascript 2606:4700:3037::6815:5381
CLOUDFLARENET

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Full URL

https://cdn.observableusercontent.com/npm/@observablehq/inputs@0.10.4/dist/inputs.min.js

Requested by

Host: static.observableusercontent.com
URL: https://static.observableusercontent.com/next/worker-50055c3f.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2606:4700:3037::6815:5381 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

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Resource Hash

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Security Headers

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Request headers

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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

date: Mon, 08 May 2023 08:33:47 GMT
strict-transport-security: max-age=31536000; includeSubDomains; preload
x-content-type-options: nosniff
cf-cache-status: HIT
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cf-ray: 7c405c1ecd47748c-LHR
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GET
H2 200 marked.min.js Show response
cdn.observableusercontent.com/npm/marked@0.3.12/ Frame 5134 16 KB
7 KB 139ms
53ms Script
application/javascript 2606:4700:3037::6815:5381
CLOUDFLARENET

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Full URL

https://cdn.observableusercontent.com/npm/marked@0.3.12/marked.min.js

Requested by

Host: static.observableusercontent.com
URL: https://static.observableusercontent.com/next/worker-50055c3f.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2606:4700:3037::6815:5381 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

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Security Headers

Name	Value
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X-Content-Type-Options	nosniff

Request headers

accept-language: en-GB,en;q=0.9
Referer: https://panningforbacon.static.observableusercontent.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

date: Mon, 08 May 2023 08:33:47 GMT
strict-transport-security: max-age=31536000; includeSubDomains; preload
x-content-type-options: nosniff
cf-cache-status: HIT
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
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cf-ray: 7c405c1ecd49748c-LHR
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GET
H2 200 doh.min.js Show response
cdn.jsdelivr.net/npm/dohjs@latest/dist/ Frame 5134 128 KB
40 KB 86ms
27ms Script
application/javascript 2a04:4e42:400::485
FASTLY

General

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Full URL

https://cdn.jsdelivr.net/npm/dohjs@latest/dist/doh.min.js

Requested by

Host: static.observableusercontent.com
URL: https://static.observableusercontent.com/next/worker-50055c3f.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a04:4e42:400::485 , United States, ASN54113 (FASTLY, US),

Reverse DNS

Software

Resource Hash

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Security Headers

Name	Value
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X-Content-Type-Options	nosniff

Request headers

accept-language: en-GB,en;q=0.9
Referer: https://panningforbacon.static.observableusercontent.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

strict-transport-security: max-age=31536000; includeSubDomains; preload
date: Mon, 08 May 2023 08:33:47 GMT
x-content-type-options: nosniff
content-encoding: br
age: 21497
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GET
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20 KB 44ms
44ms Font
font/woff2 2a00:1450:4001:806::2003
GOOGLE

General

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Full URL

https://fonts.gstatic.com/s/sourceserifpro/v15/neIQzD-0qpwxpaWvjeD0X88SAOeauXQ-oA.woff2

Requested by

Host: fonts.googleapis.com
URL: https://fonts.googleapis.com/css2?family=Source+Serif+Pro:ital,wght@0,400;0,600;0,700;1,400;1,600;1,700&display=swap

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:806::2003 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

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Resource Hash

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Security Headers

Name	Value
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Request headers

Referer: https://fonts.googleapis.com/
Origin: https://panningforbacon.static.observableusercontent.com
accept-language: en-GB,en;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

date: Sat, 06 May 2023 15:16:34 GMT
x-content-type-options: nosniff
age: 148633
content-security-policy-report-only: require-trusted-types-for 'script'; report-uri https://csp.withgoogle.com/csp/apps-themes
cross-origin-resource-policy: cross-origin
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
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x-xss-protection: 0
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server: sffe
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access-control-allow-origin: *
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expires: Sun, 05 May 2024 15:16:34 GMT

GET
H2 200 neIXzD-0qpwxpaWvjeD0X88SAOeasc8btSyqxA.woff2
fonts.gstatic.com/s/sourceserifpro/v15/ Frame 5134 20 KB
20 KB 54ms
54ms Font
font/woff2 2a00:1450:4001:806::2003
GOOGLE

General

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Show headers Download Go to

Full URL

https://fonts.gstatic.com/s/sourceserifpro/v15/neIXzD-0qpwxpaWvjeD0X88SAOeasc8btSyqxA.woff2

Requested by

Host: fonts.googleapis.com
URL: https://fonts.googleapis.com/css2?family=Source+Serif+Pro:ital,wght@0,400;0,600;0,700;1,400;1,600;1,700&display=swap

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:806::2003 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

sffe /

Resource Hash

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Security Headers

Name	Value
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Request headers

Referer: https://fonts.googleapis.com/
Origin: https://panningforbacon.static.observableusercontent.com
accept-language: en-GB,en;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

date: Sat, 06 May 2023 12:05:42 GMT
x-content-type-options: nosniff
age: 160085
content-security-policy-report-only: require-trusted-types-for 'script'; report-uri https://csp.withgoogle.com/csp/apps-themes
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content-length: 20884
x-xss-protection: 0
last-modified: Wed, 27 Apr 2022 15:27:39 GMT
server: sffe
cross-origin-opener-policy: same-origin; report-to="apps-themes"
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access-control-allow-origin: *
cache-control: public, max-age=31536000
accept-ranges: bytes
timing-allow-origin: *
expires: Sun, 05 May 2024 12:05:42 GMT

GET
H2 200 htl.min.js Show response
cdn.observableusercontent.com/npm/htl@0.3.1/dist/ Frame 5134 7 KB
3 KB 49ms
48ms Script
application/javascript 2606:4700:3037::6815:5381
CLOUDFLARENET

General

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Full URL

https://cdn.observableusercontent.com/npm/htl@0.3.1/dist/htl.min.js

Requested by

Host: static.observableusercontent.com
URL: https://static.observableusercontent.com/next/worker-50055c3f.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2606:4700:3037::6815:5381 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

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Security Headers

Name	Value
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X-Content-Type-Options	nosniff

Request headers

accept-language: en-GB,en;q=0.9
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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

date: Mon, 08 May 2023 08:33:47 GMT
strict-transport-security: max-age=31536000; includeSubDomains; preload
x-content-type-options: nosniff
cf-cache-status: HIT
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OPTIONS
H2 200 dns-query
1.1.1.1/ Frame 0
0 85ms
26ms Preflight 1.1.1.1
CLOUDFLARENET

General

Check archive.org

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Full URL: https://1.1.1.1/dns-query?dns=AAABAAABAAAAAAAABmdvb2dsZQNjb20AAAEAAQ
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 1.1.1.1 -, , ASN13335 (CLOUDFLARENET, US),
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Software: cloudflare /
Resource Hash

Request headers

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Response headers

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cf-ray: 7c405c203f6b549a-MAN
date: Mon, 08 May 2023 08:33:47 GMT
server: cloudflare

OPTIONS
H2 200 dns-query
1.1.1.1/ Frame 0
0 86ms
27ms Preflight 1.1.1.1
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL: https://1.1.1.1/dns-query?dns=AAABAAABAAAAAAAABmdvb2dsZQNjb20AABwAAQ
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 1.1.1.1 -, , ASN13335 (CLOUDFLARENET, US),
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Software: cloudflare /
Resource Hash

Request headers

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Response headers

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access-control-allow-origin: *
cf-ray: 7c405c203f71549a-MAN
date: Mon, 08 May 2023 08:33:47 GMT
server: cloudflare

OPTIONS
H2 200 dns-query
1.1.1.1/ Frame 0
0 86ms
28ms Preflight 1.1.1.1
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL: https://1.1.1.1/dns-query?dns=AAABAAABAAAAAAAABmdvb2dsZQNjb20AAAUAAQ
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 1.1.1.1 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS: one.one.one.one
Software: cloudflare /
Resource Hash

Request headers

Accept: */*
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Response headers

access-control-allow-headers: 0,1,10,11,12,13,14,15,16,17,18,19,2,20,21,22,23,24,25,26,27,28,29,3,30,4,5,6,7,8,9
access-control-allow-methods: POST, GET
access-control-allow-origin: *
cf-ray: 7c405c203f73549a-MAN
date: Mon, 08 May 2023 08:33:47 GMT
server: cloudflare

OPTIONS
H2 200 dns-query
1.1.1.1/ Frame 0
0 85ms
28ms Preflight 1.1.1.1
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL: https://1.1.1.1/dns-query?dns=AAABAAABAAAAAAAABmdvb2dsZQNjb20AAA8AAQ
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 1.1.1.1 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS: one.one.one.one
Software: cloudflare /
Resource Hash

Request headers

Accept: */*
Access-Control-Request-Headers: 0,1,10,11,12,13,14,15,16,17,18,19,2,20,21,22,23,24,25,26,27,28,29,3,30,4,5,6,7,8,9
Access-Control-Request-Method: GET
Origin: https://panningforbacon.static.observableusercontent.com
Sec-Fetch-Mode: cors
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

access-control-allow-headers: 0,1,10,11,12,13,14,15,16,17,18,19,2,20,21,22,23,24,25,26,27,28,29,3,30,4,5,6,7,8,9
access-control-allow-methods: POST, GET
access-control-allow-origin: *
cf-ray: 7c405c203f72549a-MAN
date: Mon, 08 May 2023 08:33:47 GMT
server: cloudflare

GET
H2 200 dns-query Show response
1.1.1.1/ Frame 5134 44 B
89 B 32ms
30ms Fetch
application/dns-message 1.1.1.1
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL: https://1.1.1.1/dns-query?dns=AAABAAABAAAAAAAABmdvb2dsZQNjb20AAAEAAQ
Requested by: Host: cdn.jsdelivr.net
URL: https://cdn.jsdelivr.net/npm/dohjs@latest/dist/doh.min.js
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 1.1.1.1 -, , ASN13335 (CLOUDFLARENET, US),
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Software: cloudflare /
Resource Hash: 69d2f8fbfa8be8449ee79a967c7de2ee0cafc9dfeec93ee399baaaacfdfce527

Request headers

0: A
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8: a
9: p
10: p
11: l
12: i
13: c
14: a
15: t
16: i
17: o
18: n
19: /
20: d
21: n
22: s
23: -
24: m
25: e
26: s
27: s
28: a
29: g
30: e
accept-language: en-GB,en;q=0.9
Referer: https://panningforbacon.static.observableusercontent.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

access-control-allow-origin: *
date: Mon, 08 May 2023 08:33:47 GMT
server: cloudflare
cf-ray: 7c405c206fa8549a-MAN
content-length: 44
content-type: application/dns-message

GET
H2 200 dns-query Show response
1.1.1.1/ Frame 5134 56 B
101 B 31ms
30ms Fetch
application/dns-message 1.1.1.1
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL: https://1.1.1.1/dns-query?dns=AAABAAABAAAAAAAABmdvb2dsZQNjb20AABwAAQ
Requested by: Host: cdn.jsdelivr.net
URL: https://cdn.jsdelivr.net/npm/dohjs@latest/dist/doh.min.js
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 1.1.1.1 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS: one.one.one.one
Software: cloudflare /
Resource Hash: 081cc60f32dcf0b42f6855c66160bc1a76f803145411b6333ca7968d2a681012

Request headers

0: A
1: c
2: c
3: e
4: p
5: t
6: :
7
8: a
9: p
10: p
11: l
12: i
13: c
14: a
15: t
16: i
17: o
18: n
19: /
20: d
21: n
22: s
23: -
24: m
25: e
26: s
27: s
28: a
29: g
30: e
accept-language: en-GB,en;q=0.9
Referer: https://panningforbacon.static.observableusercontent.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

access-control-allow-origin: *
date: Mon, 08 May 2023 08:33:47 GMT
server: cloudflare
cf-ray: 7c405c206fad549a-MAN
content-length: 56
content-type: application/dns-message

GET
H2 200 dns-query Show response
1.1.1.1/ Frame 5134 78 B
123 B 31ms
30ms Fetch
application/dns-message 1.1.1.1
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL: https://1.1.1.1/dns-query?dns=AAABAAABAAAAAAAABmdvb2dsZQNjb20AAAUAAQ
Requested by: Host: cdn.jsdelivr.net
URL: https://cdn.jsdelivr.net/npm/dohjs@latest/dist/doh.min.js
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 1.1.1.1 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS: one.one.one.one
Software: cloudflare /
Resource Hash: bfb7fb38fd28aa09e98139480fcad3270441cf1303ed6a7085047dc307f1f323

Request headers

0: A
1: c
2: c
3: e
4: p
5: t
6: :
7
8: a
9: p
10: p
11: l
12: i
13: c
14: a
15: t
16: i
17: o
18: n
19: /
20: d
21: n
22: s
23: -
24: m
25: e
26: s
27: s
28: a
29: g
30: e
accept-language: en-GB,en;q=0.9
Referer: https://panningforbacon.static.observableusercontent.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

access-control-allow-origin: *
date: Mon, 08 May 2023 08:33:47 GMT
server: cloudflare
cf-ray: 7c405c206fb1549a-MAN
content-length: 78
content-type: application/dns-message

GET
H2 200 dns-query Show response
1.1.1.1/ Frame 5134 49 B
94 B 31ms
30ms Fetch
application/dns-message 1.1.1.1
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL: https://1.1.1.1/dns-query?dns=AAABAAABAAAAAAAABmdvb2dsZQNjb20AAA8AAQ
Requested by: Host: cdn.jsdelivr.net
URL: https://cdn.jsdelivr.net/npm/dohjs@latest/dist/doh.min.js
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 1.1.1.1 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS: one.one.one.one
Software: cloudflare /
Resource Hash: 534834293556a0ecee3717a73a92b36650a539f2d53b0ae60ec692b88d33d400

Request headers

0: A
1: c
2: c
3: e
4: p
5: t
6: :
7
8: a
9: p
10: p
11: l
12: i
13: c
14: a
15: t
16: i
17: o
18: n
19: /
20: d
21: n
22: s
23: -
24: m
25: e
26: s
27: s
28: a
29: g
30: e
accept-language: en-GB,en;q=0.9
Referer: https://panningforbacon.static.observableusercontent.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

access-control-allow-origin: *
date: Mon, 08 May 2023 08:33:47 GMT
server: cloudflare
cf-ray: 7c405c206fb0549a-MAN
content-length: 49
content-type: application/dns-message

GET
H2 200 dns-query Show response
1.1.1.1/ Frame 5134 874 B
937 B 31ms
29ms Fetch
application/dns-message 1.1.1.1
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL: https://1.1.1.1/dns-query?dns=AAABAAABAAAAAAAABmdvb2dsZQNjb20AABAAAQ
Requested by: Host: cdn.jsdelivr.net
URL: https://cdn.jsdelivr.net/npm/dohjs@latest/dist/doh.min.js
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 1.1.1.1 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS: one.one.one.one
Software: cloudflare /
Resource Hash: 442bfd30d6aeea88bfbc90dfefedbc033882d734dd5389dcbc89595c6b541611

Request headers

0: A
1: c
2: c
3: e
4: p
5: t
6: :
7
8: a
9: p
10: p
11: l
12: i
13: c
14: a
15: t
16: i
17: o
18: n
19: /
20: d
21: n
22: s
23: -
24: m
25: e
26: s
27: s
28: a
29: g
30: e
accept-language: en-GB,en;q=0.9
Referer: https://panningforbacon.static.observableusercontent.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

access-control-allow-origin: *
date: Mon, 08 May 2023 08:33:47 GMT
server: cloudflare
cf-ray: 7c405c206fab549a-MAN
content-length: 874
content-type: application/dns-message

OPTIONS
H2 200 dns-query
1.1.1.1/ Frame 0
0 84ms
27ms Preflight 1.1.1.1
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL: https://1.1.1.1/dns-query?dns=AAABAAABAAAAAAAABmdvb2dsZQNjb20AABAAAQ
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 1.1.1.1 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS: one.one.one.one
Software: cloudflare /
Resource Hash

Request headers

Accept: */*
Access-Control-Request-Headers: 0,1,10,11,12,13,14,15,16,17,18,19,2,20,21,22,23,24,25,26,27,28,29,3,30,4,5,6,7,8,9
Access-Control-Request-Method: GET
Origin: https://panningforbacon.static.observableusercontent.com
Sec-Fetch-Mode: cors
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36

Response headers

access-control-allow-headers: 0,1,10,11,12,13,14,15,16,17,18,19,2,20,21,22,23,24,25,26,27,28,29,3,30,4,5,6,7,8,9
access-control-allow-methods: POST, GET
access-control-allow-origin: *
cf-ray: 7c405c203f6f549a-MAN
date: Mon, 08 May 2023 08:33:47 GMT
server: cloudflare

POST
H2 204 beacon-events
events.observablehq.com/ 0
354 B 154ms
135ms Ping
text/plain 2606:4700:10::6816:14dc
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://events.observablehq.com/beacon-events

Requested by

Host: observablehq.com
URL: https://observablehq.com/_next/static/chunks/pages/_app-1c9a8df420e6c011.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2606:4700:10::6816:14dc , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare / Express

Resource Hash

e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Security Headers

Name	Value
Content-Security-Policy	default-src 'none'
Strict-Transport-Security	max-age=86400; includeSubDomains; preload
X-Content-Type-Options	nosniff
X-Frame-Options	deny

Request headers

Referer: https://observablehq.com/
accept-language: en-GB,en;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.63 Safari/537.36
Content-Type: text/plain;charset=UTF-8

Response headers

date: Mon, 08 May 2023 08:33:47 GMT
content-security-policy: default-src 'none'
x-content-type-options: nosniff
strict-transport-security: max-age=86400; includeSubDomains; preload
via: 1.1 vegur
server: cloudflare
cf-cache-status: DYNAMIC
x-powered-by: Express
x-frame-options: deny
vary: Origin
access-control-allow-origin: https://observablehq.com
access-control-allow-credentials: true
cf-ray: 7c405c20fbacdcbf-LHR
access-control-allow-headers: Authorization, Content-Type
content-length: 0

Failed requests

These URLs were requested, but there was no response received. You will also see them in the list above.

Domain: www.google.co.uk
URL: https://www.google.co.uk/ads/ga-audiences?t=sr&aip=1&_r=4&slf_rd=1&v=1&_v=j100&tid=UA-112925870-1&cid=1891809276.1683534826&jid=1349801113&_u=aEBAAEAAAAAAACAAI~&z=690889658

Verdicts & Comments Add Verdict or Comment

27 JavaScript Global Variables

These are the non-standard "global" variables defined on the window object. These can be helpful in identifying possible client-side frameworks and code.

5 Cookies

Cookies are little pieces of information stored in the browser of a user. Whenever a user visits the site again, he will also send his cookie values, thus allowing the website to re-identify him even if he changed locations. This is how permanent logins work.

Domain/Path	Expires	Name / Value
.observablehq.com/	1970-01-20 21:14:54	Name: _ga Value: GA1.2.1891809276.1683534826
.observablehq.com/	1970-01-20 11:40:21	Name: _gid Value: GA1.2.1761883091.1683534826
.observablehq.com/	1970-01-20 11:41:47	Name: T Value: d32ebb9214bf3d14e0cd1fff97b92577
.observablehq.com/	1970-01-20 11:38:54	Name: _gat Value: 1
.observablehq.com/	1970-01-20 20:24:30	Name: D Value: 8bad4179-76f3-4878-8740-030fa4fb41c1\|1715070827740

2 Console Messages

A page may trigger messages to the console to be logged. These are often error messages about being unable to load a resource or execute a piece of JavaScript. Sometimes they also provide insight into the technology behind a website.

Source	Level	URL Text
other	warning	URL: https://observablehq.com/_next/static/chunks/2218-1dd97413fcc018f8.js Message: Unrecognized feature: 'vr'.
security	error	URL: https://observablehq.com/@panningforbacon/dns-lookup-in-javascript Message: Refused to load the image 'https://www.google.co.uk/ads/ga-audiences?t=sr&aip=1&_r=4&slf_rd=1&v=1&_v=j100&tid=UA-112925870-1&cid=1891809276.1683534826&jid=1349801113&_u=aEBAAEAAAAAAACAAI~&z=690889658' because it violates the following Content Security Policy directive: "img-src https://api.observablehq.com https://.static.observableusercontent.com https://static.observablehq.com https://observablehq.com https://.githubusercontent.com https://.stripe.com https://avatars.observableusercontent.com https://.google-analytics.com https://www.google.com/ads/ga-audiences https://pubads.g.doubleclick.net https://.googletagmanager.com static.observableusercontent.com https://images.ctfassets.net https://.amazonaws.com data: blob:".

Security Headers

This page lists any security headers set by the main page. If you want to understand what these mean and how to use them, head on over to this page

Header

Value

Content-Security-Policy

Strict-Transport-Security

max-age=86400; includeSubDomains

Indicators

This is a term in the security industry to describe indicators such as IPs, Domains, Hashes, etc. This does not imply that any of these indicate malicious activity.

api.observablehq.com
avatars.observableusercontent.com
cdn.jsdelivr.net
cdn.observableusercontent.com
events.observablehq.com
fonts.googleapis.com
fonts.gstatic.com
o299802.ingest.sentry.io
observablehq.com
panningforbacon.static.observableusercontent.com
static.observableusercontent.com
stats.g.doubleclick.net
www.google-analytics.com
www.google.co.uk
www.google.com
www.googletagmanager.com
www.google.co.uk
1.1.1.1
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2600:9000:2250:e400:3:3696:5cc0:93a1
2600:9000:2490:1400:1c:df24:ee80:93a1
2606:4700:10::6816:14dc
2606:4700:3037::6815:5381
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2a00:1450:4001:80b::200e
2a00:1450:4001:80f::2004
2a00:1450:4001:812::2008
2a00:1450:4001:829::200a
2a00:1450:400c:c04::9a
2a04:4e42:400::485
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observablehq.com Open in urlscan Pro 2606:4700:10::6816:14dc Public Scan

Summary

urlscan.io Verdict: No classification

Domain & IP information

Screenshot Live screenshot Full Image

Page Title

Detected technologies

Page Statistics

128 Requests

99 %HTTPS

86 %IPv6

11 Domains

16 Subdomains

15 IPs

4 Countries

2837 kBTransfer

9361 kBSize

5 Cookies

4 Outgoing links

Redirected requests

128 HTTP transactions Everything HTML Script AJAX CSS Image Expand all 1 data transactions

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observablehq.com Open in urlscan Pro
2606:4700:10::6816:14dc Public Scan

Screenshot
Live screenshot

Full Image

128
Requests

99 %
HTTPS

86 %
IPv6

11
Domains

16
Subdomains

15
IPs

4
Countries

2837 kB
Transfer

9361 kB
Size

5
Cookies

128 HTTP transactions
1 data transactions