URL: https://posts.checkboard.com/
Submission: On April 10 via automatic, source certstream-suspicious — Scanned from DE

Summary

This website contacted 6 IPs in 2 countries across 4 domains to perform 20 HTTP transactions. The main IP is 2606:4700::6812:1484, located in United States and belongs to CLOUDFLARENET, US. The main domain is posts.checkboard.com.
TLS certificate: Issued by Cloudflare Inc ECC CA-3 on April 10th 2022. Valid for: a year.
This is the only time posts.checkboard.com was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
4 2606:4700::68... 13335 (CLOUDFLAR...)
9 2600:9000:206... 16509 (AMAZON-02)
2 2a04:4e42:200... 54113 (FASTLY)
3 2606:4700::68... 13335 (CLOUDFLAR...)
1 2a00:1450:400... 15169 (GOOGLE)
20 6
Apex Domain
Subdomains
Transfer
12 substack.com
cdn.substack.com — Cisco Umbrella Rank: 26671
substack.com — Cisco Umbrella Rank: 18840 Failed
1 MB
4 checkboard.com
posts.checkboard.com
18 KB
2 sentry-cdn.com
js.sentry-cdn.com — Cisco Umbrella Rank: 5009
2 KB
1 googletagmanager.com
www.googletagmanager.com — Cisco Umbrella Rank: 71
65 KB
20 4
Domain Requested by
9 cdn.substack.com posts.checkboard.com
cdn.substack.com
substack.com
4 posts.checkboard.com posts.checkboard.com
3 substack.com cdn.substack.com
substack.com
2 js.sentry-cdn.com posts.checkboard.com
substack.com
1 www.googletagmanager.com cdn.substack.com
20 5

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

Domain
checkboard.substack.com
substack.com
Subject Issuer Validity Valid
posts.checkboard.com
Cloudflare Inc ECC CA-3
2022-04-10 -
2023-04-09
a year crt.sh
substack.com
Amazon
2021-12-07 -
2023-01-04
a year crt.sh
*.sentry-cdn.com
GlobalSign Atlas R3 DV TLS CA H2 2021
2021-11-26 -
2022-12-28
a year crt.sh
sni.cloudflaressl.com
Cloudflare Inc ECC CA-3
2021-11-13 -
2022-11-12
a year crt.sh
*.google-analytics.com
GTS CA 1C3
2022-03-21 -
2022-06-13
3 months crt.sh

This page contains 3 frames:

Primary Page: https://posts.checkboard.com/
Frame ID: F3D66D8F9BE4FB7A919EBF5C897BCE49
Requests: 12 HTTP requests in this frame

Frame: https://substack.com/channel-frame
Frame ID: 6E131B23AC36748DB55EA9BED94005EC
Requests: 1 HTTP requests in this frame

Frame: https://substack.com/channel-frame
Frame ID: 4BCE2253448DBF0D42A05B8F125206E5
Requests: 7 HTTP requests in this frame

Screenshot

Page Title

Checkboard | James Owusu | Substack

Detected technologies

Overall confidence: 100%
Detected patterns
  • googletagmanager\.com/gtag/js

Page Statistics

20
Requests

95 %
HTTPS

100 %
IPv6

4
Domains

5
Subdomains

6
IPs

2
Countries

1147 kB
Transfer

4423 kB
Size

5
Cookies

Redirected requests

There were HTTP redirect chains for the following requests:

20 HTTP transactions

Resource
Path
Size
x-fer
Type
MIME-Type
Primary Request /
posts.checkboard.com/
69 KB
17 KB
Document
General
Full URL
https://posts.checkboard.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6812:1484 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare / Express
Resource Hash
261e1c452bceef6dbc8faf802a12a094a6c4ed08d5395fbdebc58ab21a225d51
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 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36
accept-language
de-DE,de;q=0.9

Response headers

age
0
cache-control
no-cache
cf-cache-status
HIT
cf-ray
6f9b09382fcd9a3f-FRA
content-encoding
gzip
content-type
text/html; charset=utf-8
date
Sun, 10 Apr 2022 11:10:26 GMT
etag
W/"112ab-ggVyt79cHWrp7RtPKBBRQoK3Xsw"
expect-ct
max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
server
cloudflare
strict-transport-security
max-age=31536000
vary
Accept-Encoding
via
1.1 vegur
x-cluster
substack
x-frame-options
sameorigin
x-powered-by
Express
x-served-by
Substack
main.css
cdn.substack.com/theme/
528 KB
69 KB
Stylesheet
General
Full URL
https://cdn.substack.com/theme/main.css?v=ae2df0da9c10800ba0c046c782650594
Requested by
Host: posts.checkboard.com
URL: https://posts.checkboard.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:206f:8000:3:e0f8:540:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Cowboy / Express
Resource Hash
01230cc415208d57c4a6d444eed3399ad9497c2644c0a0f0121dbc0a03c5e7ca
Security Headers
Name Value
Strict-Transport-Security max-age=31536000

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://posts.checkboard.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36

Response headers

strict-transport-security
max-age=31536000
x-cluster
substack
etag
W/"83f9f-1Q6hVVUs9XeAaMd8f0PSNZDysb4"
age
54397
x-powered-by
Express
x-cache
Hit from cloudfront
content-encoding
gzip
x-served-by
Substack
server
Cowboy
date
Sat, 09 Apr 2022 20:03:49 GMT
vary
Accept-Encoding
content-type
text/css; charset=utf-8
via
1.1 vegur, 1.1 2a3a093b493a82493f3431437cb166ac.cloudfront.net (CloudFront)
cache-control
public, max-age=31557600
x-amz-cf-pop
FRA56-C1
x-amz-cf-id
zWq_cayDQJR92EVTJ-wBcAsztu9MSNpY3apx3-PiFfgVioVaCB2s5g==
https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2Fb785e7f2-5823-4a97-82b7-8261881538d9_254x254.png
cdn.substack.com/image/fetch/w_96,c_limit,f_auto,q_auto:good,fl_progressive:steep/
7 KB
8 KB
Image
General
Full URL
https://cdn.substack.com/image/fetch/w_96,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2Fb785e7f2-5823-4a97-82b7-8261881538d9_254x254.png
Requested by
Host: posts.checkboard.com
URL: https://posts.checkboard.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:206f:8000:3:e0f8:540:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
imgix /
Resource Hash
355d18c432578da3d3ac49d90945d3976aaf965740023ed2f9cae28c1b9ac52a
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://posts.checkboard.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36

Response headers

date
Sun, 10 Apr 2022 11:10:26 GMT
via
1.1 2a3a093b493a82493f3431437cb166ac.cloudfront.net (CloudFront)
x-content-type-options
nosniff
age
2700
x-cache
Miss from cloudfront
x-imgix-id
5524c169b31d39413efe9d40ee20e29362d71d90
content-length
7375
x-served-by
cache-sjc10059-SJC, cache-fra19142-FRA
last-modified
Sun, 10 Apr 2022 10:25:26 GMT
server
imgix
content-type
image/png
access-control-allow-origin
*
cache-control
public, max-age=31536000
x-amz-cf-pop
FRA56-C1
accept-ranges
bytes
x-amz-cf-id
70AJNO_s2NAMsCH3yid2k7ufNurZIbrdZdgHDGzM-u1JbTy-8D93Ig==
cross-origin-resource-policy
cross-origin
https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2Fb785e7f2-5823-4a97-82b7-8261881538d9_254x254.png
cdn.substack.com/image/fetch/w_264,c_limit,f_webp,q_auto:best,fl_progressive:steep/
13 KB
14 KB
Image
General
Full URL
https://cdn.substack.com/image/fetch/w_264,c_limit,f_webp,q_auto:best,fl_progressive:steep/https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2Fb785e7f2-5823-4a97-82b7-8261881538d9_254x254.png
Requested by
Host: posts.checkboard.com
URL: https://posts.checkboard.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:206f:8000:3:e0f8:540:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
imgix /
Resource Hash
9a56db1082ed48f0ef147fca29687a79e9c0b2811fc92456d9a1cd95456add1a
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://posts.checkboard.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36

Response headers

date
Sun, 10 Apr 2022 11:10:26 GMT
via
1.1 2a3a093b493a82493f3431437cb166ac.cloudfront.net (CloudFront)
x-content-type-options
nosniff
age
0
x-cache
Miss from cloudfront
x-imgix-id
0f7c299ee94f1d21d466c03c416b5708b38b5d3c
content-length
13552
x-served-by
cache-sjc10023-SJC, cache-hhn4058-HHN
last-modified
Sun, 10 Apr 2022 11:10:26 GMT
server
imgix
content-type
image/webp
access-control-allow-origin
*
cache-control
public, max-age=31536000
x-amz-cf-pop
FRA56-C1
accept-ranges
bytes
x-amz-cf-id
YHIDK-E-mRi37fcpJ-6hGDpLNElYm-epMZ7tNsuOSb77CYsmuQWKMw==
cross-origin-resource-policy
cross-origin
https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2Ff004d2e2-45e1-428b-9f65-b39e0528b1b6_2432x3648.jpeg
cdn.substack.com/image/fetch/w_336,h_255,c_fill,f_auto,q_auto:good,fl_progressive:steep,g_auto/
12 KB
13 KB
Image
General
Full URL
https://cdn.substack.com/image/fetch/w_336,h_255,c_fill,f_auto,q_auto:good,fl_progressive:steep,g_auto/https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2Ff004d2e2-45e1-428b-9f65-b39e0528b1b6_2432x3648.jpeg
Requested by
Host: posts.checkboard.com
URL: https://posts.checkboard.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:206f:8000:3:e0f8:540:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
imgix /
Resource Hash
163e3b22a8293e6caba5d2f92fd0042f20e4d2cc5e70cb58a256fa54901d754a
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://posts.checkboard.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36

Response headers

date
Sun, 10 Apr 2022 11:10:27 GMT
via
1.1 2a3a093b493a82493f3431437cb166ac.cloudfront.net (CloudFront)
x-content-type-options
nosniff
fastly-original-body-size
12400
age
0
x-cache
Miss from cloudfront
x-imgix-id
8a8ef5f81fac7a3a98506135b6be6107884cfb31
content-length
12400
x-served-by
cache-sjc10050-SJC, cache-hhn4057-HHN
last-modified
Sun, 10 Apr 2022 11:10:26 GMT
server
imgix
content-type
image/jpeg
access-control-allow-origin
*
cache-control
public, max-age=31536000
x-amz-cf-pop
FRA56-C1
accept-ranges
bytes
x-amz-cf-id
OCWT26-4-WEwjIdYmuvb6q5S2ZgElOxXllEh2g1w09KQUh8Jm6aHnw==
cross-origin-resource-policy
cross-origin
https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2Fb785e7f2-5823-4a97-82b7-8261881538d9_254x254.png
cdn.substack.com/image/fetch/w_88,c_limit,f_auto,q_auto:good,fl_progressive:steep/
6 KB
7 KB
Image
General
Full URL
https://cdn.substack.com/image/fetch/w_88,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2Fb785e7f2-5823-4a97-82b7-8261881538d9_254x254.png
Requested by
Host: posts.checkboard.com
URL: https://posts.checkboard.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:206f:8000:3:e0f8:540:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
imgix /
Resource Hash
ae406d5f1eedab3f8eb63b91488a5a4a1f6406192422ad67c3472b40cfadd324
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://posts.checkboard.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36

Response headers

date
Sun, 10 Apr 2022 11:10:26 GMT
via
1.1 2a3a093b493a82493f3431437cb166ac.cloudfront.net (CloudFront)
x-content-type-options
nosniff
fastly-original-body-size
6370
age
0
x-cache
Miss from cloudfront
x-imgix-id
084feaf72ca1746b5e552c06ecdc0c6f8873c957
content-length
6370
x-served-by
cache-sjc10078-SJC, cache-hhn4073-HHN
last-modified
Sun, 10 Apr 2022 11:10:26 GMT
server
imgix
content-type
image/png
access-control-allow-origin
*
cache-control
public, max-age=31536000
x-amz-cf-pop
FRA56-C1
accept-ranges
bytes
x-amz-cf-id
if5QSXI3CGtOODPbFVDbyM2adNLwA3BSTqK0WPQ9UCxUgJhnB8GH6Q==
cross-origin-resource-policy
cross-origin
c41771aeccbb43fbbffbc4755e65c9be.min.js
js.sentry-cdn.com/
2 KB
1 KB
Script
General
Full URL
https://js.sentry-cdn.com/c41771aeccbb43fbbffbc4755e65c9be.min.js
Requested by
Host: posts.checkboard.com
URL: https://posts.checkboard.com/
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
2a04:4e42:200::729 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
/
Resource Hash
9311c59f80d18ccc468da494ed95557db631981eadf986a72cef04f93815f516
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains
X-Content-Type-Options nosniff
X-Frame-Options deny
X-Xss-Protection 1; mode=block

Request headers

Referer
https://posts.checkboard.com/
Origin
https://posts.checkboard.com
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36

Response headers

date
Sun, 10 Apr 2022 11:10:26 GMT
content-encoding
gzip
x-content-type-options
nosniff
age
5
x-envoy-upstream-service-time
12
vary
Accept-Encoding
content-length
1018
x-xss-protection
1; mode=block
x-served-by
getsentry-web-default-production-689fd69c95-clsg6, cache-ord1726-ORD, cache-hhn4042-HHN
x-frame-options
deny
strict-transport-security
max-age=31536000; includeSubDomains
content-type
text/javascript
access-control-allow-origin
*
cache-control
public, max-age=3600, s-maxage=60, stale-while-revalidate=315360000, stale-if-error=315360000
x-envoy-attempt-count
1
accept-ranges
bytes
main.bundle.js
cdn.substack.com/min/
1 MB
409 KB
Script
General
Full URL
https://cdn.substack.com/min/main.bundle.js?v=157c43-1800fe3b940
Requested by
Host: posts.checkboard.com
URL: https://posts.checkboard.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:206f:8000:3:e0f8:540:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Cowboy / Express
Resource Hash
0a7aaff7eb1add84c4ecc28d45c333e8e53022a2dfe0d92aa7fe0ffaf040c302
Security Headers
Name Value
Strict-Transport-Security max-age=31536000

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://posts.checkboard.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36

Response headers

strict-transport-security
max-age=31536000
x-cluster
substack
etag
W/"157c43-1800fe3b940"
age
54397
x-powered-by
Express
x-cache
Hit from cloudfront
content-encoding
gzip
x-served-by
Substack
last-modified
Sat, 09 Apr 2022 19:53:44 GMT
server
Cowboy
date
Sat, 09 Apr 2022 20:03:49 GMT
vary
Accept-Encoding
content-type
application/javascript; charset=UTF-8
via
1.1 vegur, 1.1 2a3a093b493a82493f3431437cb166ac.cloudfront.net (CloudFront)
cache-control
public, max-age=31536000000
x-amz-cf-pop
FRA56-C1
x-amz-cf-id
1k50vgKku3AqVdNXgekfIwjq1rSRo7XpazO30A7NjJlaD5gnlyrJgA==
https%3A%2F%2Fsubstack.com%2Ficon%2FSubstackIcon%3Fheight%3D128%26fill%3D%2523aaaaaa%26stroke%3D%2523aaaaaa
cdn.substack.com/image/fetch/w_128,c_scale,f_png,q_auto:good,fl_progressive:steep/
395 B
965 B
Image
General
Full URL
https://cdn.substack.com/image/fetch/w_128,c_scale,f_png,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack.com%2Ficon%2FSubstackIcon%3Fheight%3D128%26fill%3D%2523aaaaaa%26stroke%3D%2523aaaaaa
Requested by
Host: cdn.substack.com
URL: https://cdn.substack.com/theme/main.css?v=ae2df0da9c10800ba0c046c782650594
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:206f:8000:3:e0f8:540:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Cloudinary /
Resource Hash
cacc0cf68d2cae696a9369224c2c8900ba38b51d3a48aa8fdfdfd596c1407813
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://cdn.substack.com/theme/main.css?v=ae2df0da9c10800ba0c046c782650594
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36

Response headers

date
Thu, 17 Mar 2022 08:14:48 GMT
via
1.1 2a3a093b493a82493f3431437cb166ac.cloudfront.net (CloudFront)
x-content-type-options
nosniff
age
2084138
x-cache
Hit from cloudfront
server-timing
fastly;dur=110;cpu=0;start=2022-03-17T08:14:48.619Z;desc=hit,rtt;dur=0
content-length
395
last-modified
Tue, 01 Mar 2022 09:37:17 GMT
server
Cloudinary
etag
"ba012090f4743bf741ae8a669c769f89"
content-type
image/png
access-control-allow-origin
*
access-control-expose-headers
Content-Length,ETag,Server-Timing,X-Content-Type-Options
cache-control
public, no-transform, immutable, max-age=31557600
x-amz-cf-pop
FRA56-C1
accept-ranges
bytes
timing-allow-origin
*
x-amz-cf-id
VJ4fyo0aEX54oy0DsB0qaTna5ooEQAu-dMxfFQaO3QwrgoCDO1_fsA==
channel-frame
substack.com/ Frame 6E13
0
0

channel-frame
substack.com/ Frame 4BCE
25 KB
6 KB
Document
General
Full URL
https://substack.com/channel-frame
Requested by
Host: cdn.substack.com
URL: https://cdn.substack.com/min/main.bundle.js?v=157c43-1800fe3b940
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6812:1c9 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare / Express
Resource Hash
c4aa81214b67a98946ad203603a942ad1b79fcca0f98e14a0c0251cc15c95284
Security Headers
Name Value
Strict-Transport-Security max-age=31536000

Request headers

Referer
https://posts.checkboard.com/
Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36
accept-language
de-DE,de;q=0.9

Response headers

alt-svc
h3=":443"; ma=86400, h3-29=":443"; ma=86400
cache-control
no-cache
cf-cache-status
DYNAMIC
cf-ray
6f9b093bc8de9945-FRA
content-encoding
gzip
content-type
text/html; charset=utf-8
date
Sun, 10 Apr 2022 11:10:27 GMT
etag
W/"6350-jrTXVXmKq8vlgptWCL3dE1bNHy8"
expect-ct
max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
server
cloudflare
strict-transport-security
max-age=31536000
vary
Accept-Encoding
via
1.1 vegur
x-cluster
substack
x-powered-by
Express
x-served-by
Substack
firehose
posts.checkboard.com/api/v1/
35 B
409 B
Image
General
Full URL
https://posts.checkboard.com/api/v1/firehose?_=1649589026993&d=eyJldmVudCI6InBhZ2VzIiwicHJvcGVydGllcyI6eyJicm93c2VyU2Vzc2lvbklkIjoieHl4OGw4OGEwZGoiLCJpZnJhbWVWaXNpdElkIjpmYWxzZX0sImNvbnRleHQiOnsiY2xpZW50X3R5cGUiOiJ3ZWIiLCJwYWdlIjp7InJlZmVycmVyIjoiIiwidGl0bGUiOiJDaGVja2JvYXJkIHwgSmFtZXMgT3d1c3UgfCBTdWJzdGFjayIsInVybCI6Imh0dHBzOi8vcG9zdHMuY2hlY2tib2FyZC5jb20vIn19fQ%3D%3D
Requested by
Host: posts.checkboard.com
URL: https://posts.checkboard.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6812:1484 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare / Express
Resource Hash
6adc3d4c1056996e4e8b765a62604c78b1f867cceb3b15d0b9bedb7c4857f992
Security Headers
Name Value
Strict-Transport-Security max-age=31536000

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://posts.checkboard.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36

Response headers

date
Sun, 10 Apr 2022 11:10:27 GMT
via
1.1 vegur
cf-cache-status
DYNAMIC
x-cluster
substack
server
cloudflare
x-powered-by
Express
expect-ct
max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
vary
Accept-Encoding
content-type
image/gif
cache-control
no-cache
strict-transport-security
max-age=31536000
cf-ray
6f9b093bbe4b9a3f-FRA
content-length
35
x-served-by
Substack
firehose
posts.checkboard.com/api/v1/
35 B
575 B
Image
General
Full URL
https://posts.checkboard.com/api/v1/firehose?_=1649589027141&d=eyJldmVudCI6IkNvdmVyIFBhZ2UgU2hvd24iLCJwcm9wZXJ0aWVzIjp7ImJyb3dzZXJTZXNzaW9uSWQiOiJ4eXg4bDg4YTBkaiIsImlmcmFtZVZpc2l0SWQiOmZhbHNlLCJoYXNfY292ZXJfcGhvdG8iOmZhbHNlfSwiY29udGV4dCI6eyJjbGllbnRfdHlwZSI6IndlYiIsInBhZ2UiOnsicmVmZXJyZXIiOiIiLCJ0aXRsZSI6IkNoZWNrYm9hcmQgfCBKYW1lcyBPd3VzdSB8IFN1YnN0YWNrIiwidXJsIjoiaHR0cHM6Ly9wb3N0cy5jaGVja2JvYXJkLmNvbS8ifX19
Requested by
Host: posts.checkboard.com
URL: https://posts.checkboard.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6812:1484 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare / Express
Resource Hash
6adc3d4c1056996e4e8b765a62604c78b1f867cceb3b15d0b9bedb7c4857f992
Security Headers
Name Value
Strict-Transport-Security max-age=31536000

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://posts.checkboard.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36

Response headers

date
Sun, 10 Apr 2022 11:10:27 GMT
via
1.1 vegur
cf-cache-status
DYNAMIC
x-cluster
substack
server
cloudflare
x-powered-by
Express
expect-ct
max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
vary
Accept-Encoding
content-type
image/gif
cache-control
no-cache
strict-transport-security
max-age=31536000
cf-ray
6f9b093bbe559a3f-FRA
content-length
35
x-served-by
Substack
substack.css
cdn.substack.com/theme/ Frame 4BCE
698 KB
91 KB
Stylesheet
General
Full URL
https://cdn.substack.com/theme/substack.css?v=994baee1e9b91a830a3260cf6409b9df
Requested by
Host: substack.com
URL: https://substack.com/channel-frame
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:206f:8000:3:e0f8:540:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Cowboy / Express
Resource Hash
22a1711bf754463271b0e05c1ac898460afe40b2a336321f87b6032c09af8d50
Security Headers
Name Value
Strict-Transport-Security max-age=31536000

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://substack.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36

Response headers

strict-transport-security
max-age=31536000
x-cluster
substack
etag
W/"ae7b3-uWHXX+Fq+Fa3D7W/ONf7/Tp4hrs"
age
54392
x-powered-by
Express
x-cache
Hit from cloudfront
content-encoding
gzip
x-served-by
Substack
server
Cowboy
date
Sat, 09 Apr 2022 20:03:55 GMT
vary
Accept-Encoding
content-type
text/css; charset=utf-8
via
1.1 vegur, 1.1 2a3a093b493a82493f3431437cb166ac.cloudfront.net (CloudFront)
cache-control
public, max-age=31557600
x-amz-cf-pop
FRA56-C1
x-amz-cf-id
sjl4z0TIbGX_8b4qdOnqvZrT4DNyIlOtOjg7z3xW6oyx38OM6Uu-QQ==
c41771aeccbb43fbbffbc4755e65c9be.min.js
js.sentry-cdn.com/ Frame 4BCE
2 KB
1 KB
Script
General
Full URL
https://js.sentry-cdn.com/c41771aeccbb43fbbffbc4755e65c9be.min.js
Requested by
Host: substack.com
URL: https://substack.com/channel-frame
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
2a04:4e42:200::729 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
/
Resource Hash
9311c59f80d18ccc468da494ed95557db631981eadf986a72cef04f93815f516
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains
X-Content-Type-Options nosniff
X-Frame-Options deny
X-Xss-Protection 1; mode=block

Request headers

Referer
https://substack.com/
Origin
https://substack.com
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36

Response headers

date
Sun, 10 Apr 2022 11:10:27 GMT
content-encoding
gzip
x-content-type-options
nosniff
age
6
x-envoy-upstream-service-time
12
vary
Accept-Encoding
content-length
1018
x-xss-protection
1; mode=block
x-served-by
getsentry-web-default-production-689fd69c95-clsg6, cache-ord1726-ORD, cache-hhn4042-HHN
x-frame-options
deny
strict-transport-security
max-age=31536000; includeSubDomains
content-type
text/javascript
access-control-allow-origin
*
cache-control
public, max-age=3600, s-maxage=60, stale-while-revalidate=315360000, stale-if-error=315360000
x-envoy-attempt-count
1
accept-ranges
bytes
substack.bundle.js
cdn.substack.com/min/ Frame 4BCE
1 MB
443 KB
Script
General
Full URL
https://cdn.substack.com/min/substack.bundle.js?v=1792da-1800fe3b940
Requested by
Host: substack.com
URL: https://substack.com/channel-frame
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:206f:8000:3:e0f8:540:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Cowboy / Express
Resource Hash
6e635be4f95211f711f2138924310a2b7bdc634f460db033bbda1726d912737c
Security Headers
Name Value
Strict-Transport-Security max-age=31536000

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://substack.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36

Response headers

strict-transport-security
max-age=31536000
x-cluster
substack
etag
W/"1792da-1800fe3b940"
age
54393
x-powered-by
Express
x-cache
Hit from cloudfront
content-encoding
gzip
x-served-by
Substack
last-modified
Sat, 09 Apr 2022 19:53:44 GMT
server
Cowboy
date
Sat, 09 Apr 2022 20:03:54 GMT
vary
Accept-Encoding
content-type
application/javascript; charset=UTF-8
via
1.1 vegur, 1.1 2a3a093b493a82493f3431437cb166ac.cloudfront.net (CloudFront)
cache-control
public, max-age=31536000000
x-amz-cf-pop
FRA56-C1
x-amz-cf-id
I_DwoyVeW0oLv5LzUnOGqcvq1_nNUsaV3hRjHXgeCNbPJQ8qE_pBbw==
firehose
substack.com/api/v1/ Frame 4BCE
35 B
518 B
Image
General
Full URL
https://substack.com/api/v1/firehose?_=1649589027567&d=eyJldmVudCI6InBhZ2VzIiwicHJvcGVydGllcyI6eyJicm93c2VyU2Vzc2lvbklkIjoiNDQwNnFwZW85ODgiLCJpZnJhbWVWaXNpdElkIjp7ImlkIjoiZTc5Nzc3NDMtNzY5Yi00ODMyLWJjMTctNTA4YjVlN2ZiNjMxIiwidGltZXN0YW1wIjoiMjAyMi0wNC0xMFQxMToxMDoyNy41NjdaIn19LCJjb250ZXh0Ijp7ImNsaWVudF90eXBlIjoid2ViIiwicGFnZSI6eyJyZWZlcnJlciI6Imh0dHBzOi8vcG9zdHMuY2hlY2tib2FyZC5jb20vIiwidGl0bGUiOiJTdWJzdGFjayAtIFN0YXJ0IGEgcGFpZCBuZXdzbGV0dGVyIiwidXJsIjoiaHR0cHM6Ly9zdWJzdGFjay5jb20vY2hhbm5lbC1mcmFtZSJ9fX0%3D
Requested by
Host: substack.com
URL: https://substack.com/channel-frame
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6812:1c9 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare / Express
Resource Hash
6adc3d4c1056996e4e8b765a62604c78b1f867cceb3b15d0b9bedb7c4857f992
Security Headers
Name Value
Strict-Transport-Security max-age=31536000

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://substack.com/channel-frame
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36

Response headers

date
Sun, 10 Apr 2022 11:10:27 GMT
via
1.1 vegur
cf-cache-status
DYNAMIC
x-cluster
substack
server
cloudflare
x-powered-by
Express
expect-ct
max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
vary
Accept-Encoding
content-type
image/gif
cache-control
no-cache
strict-transport-security
max-age=31536000
cf-ray
6f9b093eae709945-FRA
alt-svc
h3=":443"; ma=86400, h3-29=":443"; ma=86400
content-length
35
x-served-by
Substack
firehose
substack.com/api/v1/ Frame 4BCE
35 B
528 B
Image
General
Full URL
https://substack.com/api/v1/firehose?_=1649589027612&d=eyJldmVudCI6IkZyYW1lIG1lc3NhZ2Ugc2VudCIsInByb3BlcnRpZXMiOnsiYnJvd3NlclNlc3Npb25JZCI6IjQ0MDZxcGVvOTg4IiwiaWZyYW1lVmlzaXRJZCI6eyJpZCI6ImU3OTc3NzQzLTc2OWItNDgzMi1iYzE3LTUwOGI1ZTdmYjYzMSIsInRpbWVzdGFtcCI6IjIwMjItMDQtMTBUMTE6MTA6MjcuNTY3WiJ9fSwiY29udGV4dCI6eyJjbGllbnRfdHlwZSI6IndlYiIsInBhZ2UiOnsicmVmZXJyZXIiOiJodHRwczovL3Bvc3RzLmNoZWNrYm9hcmQuY29tLyIsInRpdGxlIjoiU3Vic3RhY2sgLSBTdGFydCBhIHBhaWQgbmV3c2xldHRlciIsInVybCI6Imh0dHBzOi8vc3Vic3RhY2suY29tL2NoYW5uZWwtZnJhbWUifX19
Requested by
Host: substack.com
URL: https://substack.com/channel-frame
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6812:1c9 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare / Express
Resource Hash
6adc3d4c1056996e4e8b765a62604c78b1f867cceb3b15d0b9bedb7c4857f992
Security Headers
Name Value
Strict-Transport-Security max-age=31536000

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://substack.com/channel-frame
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36

Response headers

date
Sun, 10 Apr 2022 11:10:27 GMT
via
1.1 vegur
cf-cache-status
DYNAMIC
x-cluster
substack
server
cloudflare
x-powered-by
Express
expect-ct
max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
vary
Accept-Encoding
content-type
image/gif
cache-control
no-cache
strict-transport-security
max-age=31536000
cf-ray
6f9b093eae729945-FRA
alt-svc
h3=":443"; ma=86400, h3-29=":443"; ma=86400
content-length
35
x-served-by
Substack
firehose
posts.checkboard.com/api/v1/
35 B
97 B
Image
General
Full URL
https://posts.checkboard.com/api/v1/firehose?_=1649589027640&d=eyJldmVudCI6IkZyYW1lIG1lc3NhZ2UgaGFuZGxlZCIsInByb3BlcnRpZXMiOnsiYnJvd3NlclNlc3Npb25JZCI6Inh5eDhsODhhMGRqIiwiaWZyYW1lVmlzaXRJZCI6ZmFsc2UsImxvZ2dlZEluQXRTdWJzdGFjayI6ZmFsc2UsImxvZ2dlZEluQXRDdXN0b21Eb21haW4iOmZhbHNlLCJhdHRlbXB0UmVkaXJlY3QiOmZhbHNlfSwiY29udGV4dCI6eyJjbGllbnRfdHlwZSI6IndlYiIsInBhZ2UiOnsicmVmZXJyZXIiOiIiLCJ0aXRsZSI6IkNoZWNrYm9hcmQgfCBKYW1lcyBPd3VzdSB8IFN1YnN0YWNrIiwidXJsIjoiaHR0cHM6Ly9wb3N0cy5jaGVja2JvYXJkLmNvbS8ifX19
Requested by
Host: posts.checkboard.com
URL: https://posts.checkboard.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6812:1484 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare / Express
Resource Hash
6adc3d4c1056996e4e8b765a62604c78b1f867cceb3b15d0b9bedb7c4857f992
Security Headers
Name Value
Strict-Transport-Security max-age=31536000

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://posts.checkboard.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36

Response headers

date
Sun, 10 Apr 2022 11:10:27 GMT
via
1.1 vegur
cf-cache-status
DYNAMIC
x-cluster
substack
server
cloudflare
x-powered-by
Express
expect-ct
max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
vary
Accept-Encoding
content-type
image/gif
cache-control
no-cache
strict-transport-security
max-age=31536000
cf-ray
6f9b093ecbd59a3f-FRA
content-length
35
x-served-by
Substack
js
www.googletagmanager.com/gtag/ Frame 4BCE
177 KB
65 KB
Script
General
Full URL
https://www.googletagmanager.com/gtag/js?id=G-TLW0DF6G5V&l=localGaDataLayer
Requested by
Host: cdn.substack.com
URL: https://cdn.substack.com/min/substack.bundle.js?v=1792da-1800fe3b940
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:830::2008 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Google Tag Manager /
Resource Hash
8e8b623c7b59ef3525f1280388f81b26149c0d4f674659b73e34ed952ccbbef9
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://substack.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36

Response headers

date
Sun, 10 Apr 2022 11:10:28 GMT
content-encoding
br
server
Google Tag Manager
access-control-allow-headers
Cache-Control
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
strict-transport-security
max-age=31536000; includeSubDomains
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
66551
x-xss-protection
0
expires
Sun, 10 Apr 2022 11:10:28 GMT

Failed requests

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

Domain
substack.com
URL
https://substack.com/channel-frame

Verdicts & Comments Add Verdict or Comment

26 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 function| structuredClone object| oncontextlost object| oncontextrestored function| getScreenDetails function| balanceText object| Sentry object| _preloads object| _analyticsConfig function| Sn function| An function| In function| gn function| bn function| En function| Pn function| On function| Cn function| wn function| Dn object| IntlPolyfill function| setImmediate function| clearImmediate object| regeneratorRuntime function| I function| __captchaOnloadCallback

5 Cookies

Domain/Path Name / Value
posts.checkboard.com/ Name: ajs_anonymous_id
Value: %22563ebd71-6f1f-415c-87e3-06af4420293a%22
.posts.checkboard.com/ Name: ajs_anonymous_id
Value: %22563ebd71-6f1f-415c-87e3-06af4420293a%22
.posts.checkboard.com/ Name: visit_id
Value: %7B%22id%22%3A%22d6d72e5b-d8ca-4e19-87df-9de0f84cffd4%22%2C%22timestamp%22%3A%222022-04-10T11%3A10%3A27.260Z%22%7D
.posts.checkboard.com/ Name: ab_testing_id
Value: %22244d30e7-39fa-4604-8563-febffece4452%22
.substack.com/ Name: __cf_bm
Value: FXj_ai007bnKiAjOnPvEjZL_1iDQX93NkbxYXjTLCXA-1649589027-0-AZReqmMcU9a8bEC0+H7GMKTJv2mde8MpHDWDxN1JN1D5HrFDr1jAjdNPMXDCAAGKW3E0xkeurY/h0z6eFljj8PU=

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