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blog.fount.io Open in urlscan Pro
172.64.151.232  Public Scan

Go To Rescan Add Verdict Report
Submitted URL: http://blog.fount.io/p/sunday-curations-andrej-karpathy
Effective URL: https://blog.fount.io/p/sunday-curations-andrej-karpathy
Submission: On November 20 via api from US — Scanned from DE
 Behaviour Indicators
Similar DOM Content API
Verdicts

Summary

This website contacted 14 IPs in 2 countries across 10 domains to perform 208 HTTP transactions. The main IP is 172.64.151.232, located in San Francisco, United States and belongs to CLOUDFLARENET, US. The main domain is blog.fount.io.
TLS certificate: Issued by WE1 on November 5th 2024. Valid for: 3 months.
This is the only time blog.fount.io was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
4 172.64.151.232 13335 (CLOUDFLAR...)
129 2600:9000:206... 16509 (AMAZON-02)
3 142.250.185.195 15169 (GOOGLE)
1 2a04:4e42:600... 54113 (FASTLY)
4 2606:4700::68... 13335 (CLOUDFLAR...)
1 2a00:1450:400... 15169 (GOOGLE)
1 13.33.219.205 16509 (AMAZON-02)
59 65.9.66.110 16509 (AMAZON-02)
1 172.64.150.56 13335 (CLOUDFLAR...)
1 172.217.16.206 15169 (GOOGLE)
1 2a00:1450:400... 15169 (GOOGLE)
1 142.250.186.68 15169 (GOOGLE)
1 172.217.16.200 15169 (GOOGLE)
208 14
4    172.64.151.232 (San Francisco, United States)

ASN13335 (CLOUDFLARENET, US)
blog.fount.io
129    2600:9000:206f:5200:4:b4b9:d3c0:93a1 (United States)

ASN16509 (AMAZON-02, US)
substackcdn.com
3    142.250.185.195 (United States)

ASN15169 (GOOGLE, US)
PTR: fra16s52-in-f3.1e100.net
fonts.gstatic.com
1    2a04:4e42:600::729 (United States)

ASN54113 (FASTLY, US)
js.sentry-cdn.com
4    2606:4700::6810:4f49 (United States)

ASN13335 (CLOUDFLARENET, US)
static.cloudflareinsights.com
cloudflareinsights.com
1    2a00:1450:4001:810::200e (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)
www.youtube-nocookie.com
1    13.33.219.205 (United States)

ASN16509 (AMAZON-02, US)
PTR: server-13-33-219-205.fra60.r.cloudfront.net
www.datadoghq-browser-agent.com
59    65.9.66.110 (United States)

ASN16509 (AMAZON-02, US)
PTR: server-65-9-66-110.fra56.r.cloudfront.net
substackcdn.com
1    172.64.150.56 (San Francisco, United States)

ASN13335 (CLOUDFLARENET, US)
substack.com
1    172.217.16.206 (United States)

ASN15169 (GOOGLE, US)
PTR: fra16s08-in-f206.1e100.net
www.youtube-nocookie.com
1    2a00:1450:4001:806::2008 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)
www.googletagmanager.com
1    142.250.186.68 (United States)

ASN15169 (GOOGLE, US)
PTR: fra24s05-in-f4.1e100.net
www.google.com
1    172.217.16.200 (United States)

ASN15169 (GOOGLE, US)
PTR: fra16s08-in-f8.1e100.net
www.googletagmanager.com
Apex Domain
Subdomains		 Transfer
188 substackcdn.com
substackcdn.com — Cisco Umbrella Rank: 15620
1 MB
4 cloudflareinsights.com
static.cloudflareinsights.com — Cisco Umbrella Rank: 617
cloudflareinsights.com — Cisco Umbrella Rank: 591
14 KB
4 fount.io
blog.fount.io
35 KB
3 gstatic.com
fonts.gstatic.com
42 KB
2 googletagmanager.com
www.googletagmanager.com — Cisco Umbrella Rank: 39
93 KB
2 youtube-nocookie.com
www.youtube-nocookie.com — Cisco Umbrella Rank: 3683
1 google.com
www.google.com — Cisco Umbrella Rank: 3
1 substack.com
substack.com — Cisco Umbrella Rank: 15176
1 datadoghq-browser-agent.com
www.datadoghq-browser-agent.com — Cisco Umbrella Rank: 1279
54 KB
1 sentry-cdn.com
js.sentry-cdn.com — Cisco Umbrella Rank: 5415
2 KB
208 10
Domain Requested by
188 substackcdn.com blog.fount.io
substackcdn.com
4 blog.fount.io www.datadoghq-browser-agent.com
3 fonts.gstatic.com blog.fount.io
2 cloudflareinsights.com www.datadoghq-browser-agent.com
2 www.googletagmanager.com substackcdn.com
www.googletagmanager.com
2 www.youtube-nocookie.com blog.fount.io
substackcdn.com
2 static.cloudflareinsights.com blog.fount.io
1 www.google.com www.googletagmanager.com
1 substack.com substackcdn.com
1 www.datadoghq-browser-agent.com blog.fount.io
1 js.sentry-cdn.com blog.fount.io
208 11

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

Domain
discord.com
sifted.eu
fnt.so
blog.eladgil.com
www.amazon.co.uk
substack.com
Subject Issuer Validity Valid
blog.fount.io
WE1		 2024-11-05 -
2025-02-03		 3 months crt.sh
substackcdn.com
Amazon RSA 2048 M02		 2024-02-13 -
2025-03-13		 a year crt.sh
*.gstatic.com
WR2		 2024-10-21 -
2025-01-13		 3 months crt.sh
*.sentry-cdn.com
GlobalSign Atlas R3 DV TLS CA 2024 Q2		 2024-06-04 -
2025-07-06		 a year crt.sh
cloudflareinsights.com
WE1		 2024-11-01 -
2025-01-30		 3 months crt.sh
*.google.com
WR2		 2024-10-21 -
2025-01-13		 3 months crt.sh
*.datadoghq-browser-agent.com
DigiCert Global G2 TLS RSA SHA256 2020 CA1		 2024-07-30 -
2025-08-03		 a year crt.sh
substack.com
WE1		 2024-10-11 -
2025-01-09		 3 months crt.sh
*.google-analytics.com
WR2		 2024-10-21 -
2025-01-13		 3 months crt.sh

This page contains 6 frames:

Primary Page: https://blog.fount.io/p/sunday-curations-andrej-karpathy
Frame ID: 60E5359EBED2C46AD84322154C516FC9
Requests: 202 HTTP requests in this frame

Frame: https://www.youtube-nocookie.com/embed/cdiD-9MMpb0?rel=0&autoplay=0&showinfo=0&enablejsapi=0
Frame ID: 57060A1C0F071607799D599C45C887FF
Requests: 1 HTTP requests in this frame

Frame: https://substack.com/channel-frame
Frame ID: 6E7549EF15A5E99960FF8A10DA2A5C64
Requests: 1 HTTP requests in this frame

Frame: https://www.youtube-nocookie.com/embed/cdiD-9MMpb0?rel=0&autoplay=0&showinfo=0&enablejsapi=0
Frame ID: B52B730076C7FED5B468BD1B19FED425
Requests: 1 HTTP requests in this frame

Frame: https://www.youtube-nocookie.com/embed/cdiD-9MMpb0?rel=0&autoplay=0&showinfo=0&enablejsapi=0
Frame ID: EDFA931ABD0C5C0D638D868BA56CE20E
Requests: 1 HTTP requests in this frame

Frame: https://www.googletagmanager.com/static/service_worker/4bj0/sw_iframe.html?origin=https%3A%2F%2Fblog.fount.io
Frame ID: E33909312E937726EF8902F989988B2D
Requests: 1 HTTP requests in this frame

Screenshot
Live screenshot
Full Image

Page Title

Sunday Curations – Andrej Karpathy, AI & Talent

Page URL History Show full URLs

  1. http://blog.fount.io/p/sunday-curations-andrej-karpathy HTTP 307
    https://blog.fount.io/p/sunday-curations-andrej-karpathy Page URL

Detected technologies

Overall confidence: 100%
Detected patterns
  • static\.cloudflareinsights\.com/beacon(?:\.min)?\.js
Overall confidence: 100%
Detected patterns
  • googletagmanager\.com/gtag/js

Page Statistics

208
Requests

100 %
HTTPS

38 %
IPv6

10
Domains

11
Subdomains

14
IPs

2
Countries

1776 kB
Transfer

5387 kB
Size

14
Cookies

Page URL History

This captures the URL locations of the websites, including HTTP redirects and client-side redirects via JavaScript or Meta fields.

  1. http://blog.fount.io/p/sunday-curations-andrej-karpathy HTTP 307
    https://blog.fount.io/p/sunday-curations-andrej-karpathy Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

208 HTTP transactions

Resource
Path		 Size
x-fer		 Type
MIME-Type
Primary Request sunday-curations-andrej-karpathy
blog.fount.io/p/
Redirect Chain
  • http://blog.fount.io/p/sunday-curations-andrej-karpathy
  • https://blog.fount.io/p/sunday-curations-andrej-karpathy
140 KB
27 KB 		Document
General
Check archive.org
Download Go to
Full URL
https://blog.fount.io/p/sunday-curations-andrej-karpathy
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
172.64.151.232 San Francisco, United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare / Express
Resource Hash
c39089e2186dcf573b126899bad6d50786e8e24389ffa08b202cec3d0551541d
Security Headers
Name Value
Strict-Transport-Security max-age=31536000
X-Frame-Options sameorigin

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36

Response headers

alt-svc
h3=":443"; ma=86400
cache-control
no-cache
cf-cache-status
MISS
cf-ray
8e55ae5f58f3e529-TXL
content-encoding
br
content-type
text/html; charset=utf-8
date
Wed, 20 Nov 2024 04:26:19 GMT
link
<https://substackcdn.com>; rel=preconnect
priority
u=0,i
server
cloudflare
server-timing
cfCacheStatus;desc="MISS" cfExtPri
strict-transport-security
max-age=31536000
vary
Accept-Encoding
x-cluster
substack
x-deploy
c6ab2e01e4
x-frame-options
sameorigin
x-powered-by
Express
x-served-by
Substack
x-service
web
x-sub
fount

Redirect headers

Location
https://blog.fount.io/p/sunday-curations-andrej-karpathy
Non-Authoritative-Reason
HttpsUpgrades
main.77714ee1702080debf67.css
substackcdn.com/bundle/theme/ 		409 KB
57 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://substackcdn.com/bundle/theme/main.77714ee1702080debf67.css
Requested by
Host: blog.fount.io
URL: https://blog.fount.io/p/sunday-curations-andrej-karpathy
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:206f:5200:4:b4b9:d3c0:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
AmazonS3 /
Resource Hash
24d30256fabdb890517ac3b5c06b31df6d79ebfdb7e3554b61a05a5de0d5800a

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Referer
https://blog.fount.io/

Response headers

content-encoding
br
etag
W/"77714ee1702080debf670dcda3d5b364"
age
40710
alt-svc
h3=":443"; ma=86400
x-cache
Hit from cloudfront
x-amz-cf-id
iU5Lji3rObUDr2bPzzNq_KdiMubVZ-rPmcCSFB9JM71WE-LCh6Vcpw==
date
Tue, 19 Nov 2024 17:07:50 GMT
content-type
text/css
vary
accept-encoding, Origin
x-amz-expiration
expiry-date="Mon, 19 May 2025 00:00:00 GMT", rule-id="StaticAssetIntelligentTiering"
last-modified
Tue, 19 Nov 2024 16:59:26 GMT
cache-control
public, max-age=31536000, immutable
via
1.1 673c96d1f19de21216629aa48d90ac92.cloudfront.net (CloudFront)
x-amz-cf-pop
FRA56-C1
server
AmazonS3
x-amz-server-side-encryption
AES256
rnCr-xNNww_2s0amA9M5knjsS_ul.woff2
fonts.gstatic.com/s/spectral/v13/ 		13 KB
13 KB 		Font
General
Check archive.org
Download Go to
Full URL
https://fonts.gstatic.com/s/spectral/v13/rnCr-xNNww_2s0amA9M5knjsS_ul.woff2
Requested by
Host: blog.fount.io
URL: https://blog.fount.io/p/sunday-curations-andrej-karpathy
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
142.250.185.195 , United States, ASN15169 (GOOGLE, US),
Reverse DNS
fra16s52-in-f3.1e100.net
Software
sffe /
Resource Hash
478eee9ac68ef242aeda59b8b37b388003eb3eac12af90b8c38fa65d3a34f3a9
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Origin
https://blog.fount.io
Referer
https://blog.fount.io/

Response headers

age
124546
report-to
{"group":"apps-themes","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/apps-themes"}]}
x-content-type-options
nosniff
expires
Tue, 18 Nov 2025 17:50:33 GMT
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
date
Mon, 18 Nov 2024 17:50:33 GMT
last-modified
Tue, 30 Aug 2022 22:36:23 GMT
content-type
font/woff2
cache-control
public, max-age=31536000
timing-allow-origin
*
cross-origin-opener-policy
same-origin; report-to="apps-themes"
cross-origin-resource-policy
cross-origin
content-security-policy-report-only
require-trusted-types-for 'script'; report-uri https://csp.withgoogle.com/csp/apps-themes
accept-ranges
bytes
access-control-allow-origin
*
content-length
13780
x-xss-protection
0
server
sffe
entry-ac25194e.css
substackcdn.com/bundle/assets/ 		12 KB
3 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://substackcdn.com/bundle/assets/entry-ac25194e.css
Requested by
Host: blog.fount.io
URL: https://blog.fount.io/p/sunday-curations-andrej-karpathy
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:206f:5200:4:b4b9:d3c0:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
AmazonS3 /
Resource Hash
ac25194e2b3aa4401815ec72e2c028e3ac5e3085e5902b9d217fc289378173a2

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Referer
https://blog.fount.io/

Response headers

content-encoding
br
etag
W/"92f2273194945b74fe8021dc5d12c78b"
age
85930
alt-svc
h3=":443"; ma=86400
x-cache
Hit from cloudfront
x-amz-cf-id
GH4rqMV_r_juxBWafwG9KJr_z5hynp0F75tFIZjuBBZr3N_qFqEckA==
date
Tue, 19 Nov 2024 04:34:10 GMT
content-type
text/css
vary
accept-encoding, Origin
x-amz-expiration
expiry-date="Fri, 16 May 2025 00:00:00 GMT", rule-id="StaticAssetIntelligentTiering"
last-modified
Sat, 16 Nov 2024 14:53:00 GMT
cache-control
public, max-age=31536000, immutable
via
1.1 673c96d1f19de21216629aa48d90ac92.cloudfront.net (CloudFront)
x-amz-cf-pop
FRA56-C1
server
AmazonS3
x-amz-server-side-encryption
AES256
index-99246351.css
substackcdn.com/bundle/assets/ 		9 KB
3 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://substackcdn.com/bundle/assets/index-99246351.css
Requested by
Host: blog.fount.io
URL: https://blog.fount.io/p/sunday-curations-andrej-karpathy
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:206f:5200:4:b4b9:d3c0:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
AmazonS3 /
Resource Hash
992463510fb5ae66585e971a01583c935b588f86bf06441998d0064209ef711f

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Referer
https://blog.fount.io/

Response headers

content-encoding
br
etag
W/"09ed236842548fafc694ac4143cd3c0f"
age
44117
alt-svc
h3=":443"; ma=86400
x-cache
Hit from cloudfront
x-amz-cf-id
CUbZzP56vUz2CFd7ZbTUoiq53E8T2juMXo96FRwiZ0PNsWj8NVM7Rg==
date
Tue, 19 Nov 2024 16:11:03 GMT
content-type
text/css
vary
accept-encoding, Origin
x-amz-expiration
expiry-date="Mon, 19 May 2025 00:00:00 GMT", rule-id="StaticAssetIntelligentTiering"
last-modified
Tue, 19 Nov 2024 16:09:14 GMT
cache-control
public, max-age=31536000, immutable
via
1.1 673c96d1f19de21216629aa48d90ac92.cloudfront.net (CloudFront)
x-amz-cf-pop
FRA56-C1
server
AmazonS3
x-amz-server-side-encryption
AES256
LazyComponent-856acd57.css
substackcdn.com/bundle/assets/ 		72 B
584 B 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://substackcdn.com/bundle/assets/LazyComponent-856acd57.css
Requested by
Host: blog.fount.io
URL: https://blog.fount.io/p/sunday-curations-andrej-karpathy
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:206f:5200:4:b4b9:d3c0:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
AmazonS3 /
Resource Hash
856acd576e69f47e978c38f4ee2cf40a7999e9cac53bcee003c3f6c84f54d568

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Referer
https://blog.fount.io/

Response headers

etag
"7bdf583c53cb7e2899e30eb285ea473f"
age
45534
alt-svc
h3=":443"; ma=86400
x-cache
Hit from cloudfront
x-amz-cf-id
uZgJEsLTBgfmY4yE6tAfZGMsbPpsQwac8w1SsiLGX0GoLPoP1kTUZw==
date
Tue, 19 Nov 2024 15:47:26 GMT
content-type
text/css
vary
accept-encoding, Origin
x-amz-expiration
expiry-date="Sun, 18 May 2025 00:00:00 GMT", rule-id="StaticAssetIntelligentTiering"
last-modified
Mon, 18 Nov 2024 15:04:16 GMT
cache-control
public, max-age=31536000, immutable
via
1.1 673c96d1f19de21216629aa48d90ac92.cloudfront.net (CloudFront)
accept-ranges
bytes
content-length
72
x-amz-cf-pop
FRA56-C1
server
AmazonS3
x-amz-server-side-encryption
AES256
index-70996965.css
substackcdn.com/bundle/assets/ 		113 KB
15 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://substackcdn.com/bundle/assets/index-70996965.css
Requested by
Host: blog.fount.io
URL: https://blog.fount.io/p/sunday-curations-andrej-karpathy
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:206f:5200:4:b4b9:d3c0:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
AmazonS3 /
Resource Hash
70996965de0692348cdac33ffd8ff8884e310abf19bf580b470dc9348d1ec76d

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Referer
https://blog.fount.io/

Response headers

content-encoding
br
etag
W/"f60788631ae268f3229f46b346818836"
age
29895
alt-svc
h3=":443"; ma=86400
x-cache
Hit from cloudfront
x-amz-cf-id
GjjJ1IY84QY10ecjco_U74RhNLJWr-R-C1Dznvg47yS0TMP8xpqJoA==
date
Tue, 19 Nov 2024 20:08:05 GMT
content-type
text/css
vary
accept-encoding, Origin
x-amz-expiration
expiry-date="Mon, 19 May 2025 00:00:00 GMT", rule-id="StaticAssetIntelligentTiering"
last-modified
Tue, 19 Nov 2024 19:57:42 GMT
cache-control
public, max-age=31536000, immutable
via
1.1 673c96d1f19de21216629aa48d90ac92.cloudfront.net (CloudFront)
x-amz-cf-pop
FRA56-C1
server
AmazonS3
x-amz-server-side-encryption
AES256
theme-c2d8479d.css
substackcdn.com/bundle/assets/ 		2 KB
1 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://substackcdn.com/bundle/assets/theme-c2d8479d.css
Requested by
Host: blog.fount.io
URL: https://blog.fount.io/p/sunday-curations-andrej-karpathy
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:206f:5200:4:b4b9:d3c0:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
AmazonS3 /
Resource Hash
c2d8479d2e68e5d93da44598909555e488cd3035f337ffb25b2f762011404712

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Referer
https://blog.fount.io/

Response headers

content-encoding
br
etag
W/"b42cfd980223c1faaf71dc1a988290f1"
age
40710
alt-svc
h3=":443"; ma=86400
x-cache
Hit from cloudfront
x-amz-cf-id
SGeYvCvnU8J7GyBZ25YwyLLXUXPK9Az0CG5-7C1PzZj1FnbThOa2mg==
date
Tue, 19 Nov 2024 17:07:50 GMT
content-type
text/css
vary
accept-encoding, Origin
x-amz-expiration
expiry-date="Mon, 19 May 2025 00:00:00 GMT", rule-id="StaticAssetIntelligentTiering"
last-modified
Tue, 19 Nov 2024 16:59:29 GMT
cache-control
public, max-age=31536000, immutable
via
1.1 673c96d1f19de21216629aa48d90ac92.cloudfront.net (CloudFront)
x-amz-cf-pop
FRA56-C1
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QUIC, , AES_128_GCM
Server
65.9.66.110 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
server-65-9-66-110.fra56.r.cloudfront.net
Software
AmazonS3 /
Resource Hash
24228c5adf4e282d3a61c3406c476f10a8aa39c95d842acc4337a82daa17d9f8

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Referer
https://blog.fount.io/

Response headers

etag
"c630e4c133d0b65d123241f960354aac"
age
45537
alt-svc
h3=":443"; ma=86400
x-cache
Hit from cloudfront
x-amz-cf-id
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date
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content-type
text/css
vary
accept-encoding, Origin
x-amz-expiration
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last-modified
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cache-control
public, max-age=31536000, immutable
via
1.1 d947c3ab534102b2c9a7f0a4541d2ed8.cloudfront.net (CloudFront)
accept-ranges
bytes
content-length
167
x-amz-cf-pop
FRA56-C1
server
AmazonS3
x-amz-server-side-encryption
AES256
js
www.googletagmanager.com/gtag/ 		260 KB
93 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://www.googletagmanager.com/gtag/js?id=AW-316245675&l=localGaDataLayer
Requested by
Host: substackcdn.com
URL: https://substackcdn.com/bundle/assets/tracking-d84c09e3.js
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:806::2008 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Google Tag Manager /
Resource Hash
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Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains
X-Xss-Protection 0

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Referer
https://blog.fount.io/

Response headers

content-encoding
br
report-to
{"group":"coop_reporting","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/scaffolding/ascgcycc:838:0"}],}
expires
Wed, 20 Nov 2024 04:26:26 GMT
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
date
Wed, 20 Nov 2024 04:26:26 GMT
content-type
application/javascript; charset=UTF-8
vary
Accept-Encoding
last-modified
Wed, 20 Nov 2024 03:00:00 GMT
access-control-allow-headers
Cache-Control
strict-transport-security
max-age=31536000; includeSubDomains
cache-control
private, max-age=900
cross-origin-resource-policy
cross-origin
access-control-allow-credentials
true
content-security-policy-report-only
script-src 'none'; form-action 'none'; frame-src 'none'; report-uri https://csp.withgoogle.com/csp/scaffolding/ascgcycc:838:0
access-control-allow-origin
*
cross-origin-opener-policy-report-only
same-origin; report-to=coop_reporting
content-length
94196
x-xss-protection
0
server
Google Tag Manager
rum
cloudflareinsights.com/cdn-cgi/ 		0
37 B 		XHR
General
Check archive.org
Download Go to
Full URL
https://cloudflareinsights.com/cdn-cgi/rum
Requested by
Host: www.datadoghq-browser-agent.com
URL: https://www.datadoghq-browser-agent.com/us1/v5/datadog-rum.js
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6810:4f49 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
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Security Headers
Name Value
X-Content-Type-Options nosniff
X-Frame-Options DENY

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
content-type
application/json
Referer
https://blog.fount.io/

Response headers

access-control-max-age
86400
access-control-allow-credentials
true
access-control-allow-methods
POST,OPTIONS
x-content-type-options
nosniff
cf-ray
8e55ae892a00d27a-FRA
access-control-allow-origin
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date
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vary
Origin
server
cloudflare
x-frame-options
DENY
rum
cloudflareinsights.com/cdn-cgi/ Frame 		0
0 		Preflight
General
Check archive.org
Download Go to
Full URL
https://cloudflareinsights.com/cdn-cgi/rum
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6810:4f49 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Frame-Options DENY

Request headers

Accept
*/*
Access-Control-Request-Headers
content-type
Access-Control-Request-Method
POST
Origin
https://blog.fount.io
Sec-Fetch-Mode
cors
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36

Response headers

access-control-allow-credentials
true
access-control-allow-headers
Content-Type
access-control-allow-methods
POST,OPTIONS
access-control-allow-origin
https://blog.fount.io
access-control-max-age
86400
cf-ray
8e55ae88d992d27a-FRA
content-encoding
gzip
content-type
text/plain
date
Wed, 20 Nov 2024 04:26:26 GMT
server
cloudflare
vary
Origin
x-content-type-options
nosniff
x-frame-options
DENY
https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2F7a0f1217-4ba4-4272-b231-b113a67698f0%2Ffavicon.ico
substackcdn.com/image/fetch/f_auto,q_auto:good,fl_progressive:steep/ 		1 KB
2 KB 		Other
General
Check archive.org
Download Go to
Full URL
https://substackcdn.com/image/fetch/f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2F7a0f1217-4ba4-4272-b231-b113a67698f0%2Ffavicon.ico
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
65.9.66.110 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
server-65-9-66-110.fra56.r.cloudfront.net
Software
imgproxy / Express
Resource Hash
444f1c8b0df451571324fe3d4394f98e35e3d41668bad0b0f817b6fede43f205
Security Headers
Name Value
Content-Security-Policy script-src 'none'

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Referer
https://blog.fount.io/

Response headers

x-request-id
nFFW3pUbAjkGQpTvCA-sZ
etag
"yj0WO6sFU4GCciYUBWjzvvfqrBh869doeOC2Pp5EI1Y/RIjE4MjQzN2YyNDk0NTZiNTUyNDVjOWM5NmMxZmQ5ZWE1Ig"
age
266305
alt-svc
h3=":443"; ma=86400
x-cache
Hit from cloudfront
x-amz-cf-id
vYcxn1htb_CoAKjL9o0jV_IDG_0y8VS2LFn8J4QGeD0TeK5NZcS3eg==
date
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content-type
image/jpeg
content-disposition
inline; filename="favicon.jpg"
content-security-policy
script-src 'none'
cache-control
public, max-age=31536000
via
1.1 d947c3ab534102b2c9a7f0a4541d2ed8.cloudfront.net (CloudFront)
content-length
1192
x-amz-cf-pop
FRA56-C1
x-powered-by
Express
server
imgproxy
https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2F7a0f1217-4ba4-4272-b231-b113a67698f0%2Ffavicon-32x32.png
substackcdn.com/image/fetch/f_auto,q_auto:good,fl_progressive:steep/ 		942 B
1 KB 		Other
General
Check archive.org
Download Go to
Full URL
https://substackcdn.com/image/fetch/f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2F7a0f1217-4ba4-4272-b231-b113a67698f0%2Ffavicon-32x32.png
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
65.9.66.110 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
server-65-9-66-110.fra56.r.cloudfront.net
Software
imgproxy / Express
Resource Hash
0f5407a7cee7b3feb0a8866cba018731be6a91990aae059b2945cb858244b23f
Security Headers
Name Value
Content-Security-Policy script-src 'none'

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Referer
https://blog.fount.io/

Response headers

x-request-id
RXiqb68AZAR4TvRfiPG4f
etag
"yj0WO6sFU4GCciYUBWjzvvfqrBh869doeOC2Pp5EI1Y/RIjY2MWYwYzg1MzhjMDQxZWRmOGNkZmQ3YTNjOWU0ZDU4Ig"
age
266304
alt-svc
h3=":443"; ma=86400
x-cache
Hit from cloudfront
x-amz-cf-id
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date
Sun, 17 Nov 2024 02:28:02 GMT
content-type
image/jpeg
content-disposition
inline; filename="favicon-32x32.jpg"
content-security-policy
script-src 'none'
cache-control
public, max-age=31536000
via
1.1 d947c3ab534102b2c9a7f0a4541d2ed8.cloudfront.net (CloudFront)
content-length
942
x-amz-cf-pop
FRA56-C1
x-powered-by
Express
server
imgproxy
collect
www.google.com/ccm/ 		0
0 		Ping
General
Check archive.org
Download Go to
Full URL
https://www.google.com/ccm/collect?en=page_view&dl=https%3A%2F%2Fblog.fount.io%2Fp%2Fsunday-curations-andrej-karpathy&scrsrc=www.googletagmanager.com&frm=0&rnd=931221200.1732076786&auid=103584398.1732076786&npa=1&gtm=45be4bj0v887153041za200&gcd=13l3lPl2l1l1&dma_cps=syphamo&dma=1&tag_exp=101925629~102067555~102067808~102077855~102081485&tft=1732076786285&tfd=6963&apve=1
Requested by
Host: www.googletagmanager.com
URL: https://www.googletagmanager.com/gtag/js?id=AW-316245675&l=localGaDataLayer
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
142.250.186.68 , United States, ASN15169 (GOOGLE, US),
Reverse DNS
fra24s05-in-f4.1e100.net
Software
/
Resource Hash
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Referer
https://blog.fount.io/

Response headers
sw_iframe.html
www.googletagmanager.com/static/service_worker/4bj0/ Frame E339 		0
0 		Document
General
Check archive.org
Download Go to
Full URL
https://www.googletagmanager.com/static/service_worker/4bj0/sw_iframe.html?origin=https%3A%2F%2Fblog.fount.io
Requested by
Host: www.googletagmanager.com
URL: https://www.googletagmanager.com/gtag/js?id=AW-316245675&l=localGaDataLayer
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
172.217.16.200 , United States, ASN15169 (GOOGLE, US),
Reverse DNS
fra16s08-in-f8.1e100.net
Software
sffe /
Resource Hash
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36

Response headers

accept-ranges
bytes
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
cache-control
public, max-age=31536000
content-encoding
br
content-length
1476
content-type
text/html
cross-origin-opener-policy
same-origin; report-to="analytics-container-tag-serving"
cross-origin-resource-policy
cross-origin
date
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expires
Thu, 20 Nov 2025 04:26:26 GMT
last-modified
Tue, 19 Nov 2024 10:38:00 GMT
report-to
{"group":"analytics-container-tag-serving","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/analytics-container-tag-serving"}]}
server
sffe
service-worker-allowed
/static/service_worker
vary
Accept-Encoding
x-content-type-options
nosniff
x-xss-protection
0

Failed requests

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

Domain
www.youtube-nocookie.com
URL
https://www.youtube-nocookie.com/embed/cdiD-9MMpb0?rel=0&autoplay=0&showinfo=0&enablejsapi=0

Verdicts & Comments Add Verdict or Comment

17 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.

object| 0 object| 1 object| 2 object| Sentry object| _preloads object| _analyticsConfig object| DD_RUM object| _sentryDebugIds string| _sentryDebugIdIdentifier object| I18N function| __captchaOnloadCallback function| Mousetrap object| localGaDataLayer function| gtag object| __cfBeacon object| google_tag_manager object| google_tag_data

14 Cookies

Domain/Path Name / Value
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Value: %22false%22
.blog.fount.io/ Name: ab_testing_id
Value: %229e3a06cf-bb21-44e9-aed0-9794b8f2d65b%22
.blog.fount.io/ Name: __cf_bm
Value: ThaMrq0FXq6UCh5SWF1RHC5dAd_j_.Q2qYF32EobYAA-1732076779-1.0.1.1-tJm8IAsUwOR_gA67DK1N9bK_RqbCn8SSEROCbdy48zpmFa5dGgo1okKX3m5gfv2zectIA5X8a8kc1bIbQ2F71Q
blog.fount.io/ Name: ajs_anonymous_id
Value: %22176eae4f-e0fa-46b0-b33d-f29faf85aacd%22
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.substack.com/ Name: cookie_storage_key
Value: 29787fd2-c9c4-4a90-98dc-144c99fa74c0
.substack.com/ Name: __cf_bm
Value: FDiskq79WB86L_6TA9v2ykzk_WtDqQTN73i5iEEF5Go-1732076783-1.0.1.1-Hl_H3iNgis.XO4NNQSYceTX3oqeTM5nfI4uWkPo1Q9YX9lG2kzfm.XlLg.c54964EMjzf5wNrTAnIKiPI0xXdw
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Value: %22176eae4f-e0fa-46b0-b33d-f29faf85aacd%22
blog.fount.io/ Name: AWSALBTG
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blog.fount.io/ Name: AWSALBTGCORS
Value: c2WnR3V/pe0mnubfrX9EH3yAip4Dci4Rk3ODyjzWE5LjF47rNKNTPCfP5Y/hm6kcMHLcthbrt+d0iEB1ldcqyuSsowDOWwT2Q/yQuLXYtvFUOWPF1WAdZYzxOKHzvs/cYhayvjUlX09EyrAyMlRadLcGdvBgnGryoIE8ULk6ExHe
.blog.fount.io/ Name: cookie_storage_key
Value: 286e5fe5-bc7d-481a-865a-7c8716ac2fea
.blog.fount.io/ Name: visit_id
Value: %7B%22id%22%3A%223f7bc016-653a-47f8-b7a4-b7a65368a629%22%2C%22timestamp%22%3A%222024-11-20T04%3A26%3A24.766Z%22%7D
.fount.io/ Name: _gcl_au
Value: 1.1.103584398.1732076786
blog.fount.io/ Name: _dd_s
Value: rum=0&expire=1732077681058

2 Console Messages

Source Level URL
Text
other warning URL: https://blog.fount.io/p/sunday-curations-andrej-karpathy(Line 236)
Message:
<iframe gesture="media"> is not supported. Use <iframe allow="autoplay">, https://goo.gl/ximf56
other warning URL: https://blog.fount.io/p/sunday-curations-andrej-karpathy(Line 236)
Message:
Allow attribute will take precedence over 'allowfullscreen'.

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
Strict-Transport-Security max-age=31536000
X-Frame-Options sameorigin

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.

blog.fount.io
cloudflareinsights.com
fonts.gstatic.com
js.sentry-cdn.com
static.cloudflareinsights.com
substack.com
substackcdn.com
www.datadoghq-browser-agent.com
www.google.com
www.googletagmanager.com
www.youtube-nocookie.com
www.youtube-nocookie.com
13.33.219.205
142.250.185.195
142.250.186.68
172.217.16.200
172.217.16.206
172.64.150.56
172.64.151.232
2600:9000:206f:5200:4:b4b9:d3c0:93a1
2606:4700::6810:4f49
2a00:1450:4001:806::2008
2a00:1450:4001:810::200e
2a04:4e42:600::729
65.9.66.110
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