Host Profile

substack.com

fqdn
2
IPs
7
Tech
1
Certs
13
Cookies
34
Headers
5
MIME
8
Incoming
3
Outgoing
First Seen
2017-09-29 04:27:32
Last Seen
2026-08-26 01:56:02
Times Seen
161
Registered
2010-04-27 00:00:00

IP Addresses

2
IPASNAS NameCountryFirst SeenLast SeenSeen
172.64.150.56AS13335CLOUDFLARENET-2026-08-24 00:03:382026-08-26 01:56:0286
104.18.37.200AS13335CLOUDFLARENET-2026-08-24 00:04:492026-08-26 01:43:4175

Technologies

7
Express.svg
Express (Web frameworks, Web servers)

Express is a web application framework for Node.js, released as free and open-source software under the MIT License. It is designed for building web applications and APIs.

https://expressjs.com
First2026-08-24 00:03:38
Last2026-08-26 01:56:02
Seen161
CloudFlare.svg
Cloudflare (CDN)

Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.

https://www.cloudflare.com
First2026-08-24 00:03:38
Last2026-08-26 01:56:02
Seen161
CloudFlare.svg
Cloudflare Bot Management (Security)

Cloudflare bot management solution identifies and mitigates automated traffic to protect websites from bad bots.

https://www.cloudflare.com/en-gb/products/bot-management/
First2026-08-24 00:04:49
Last2026-08-26 01:56:02
Seen158
Substack.svg
Substack (Blogs)

Substack is an American online platform that provides publishing, payment, analytics, and design infrastructure to support subscription newsletters.

https://substack.com/
First2026-08-24 00:03:38
Last2026-08-26 01:56:02
Seen161
HSTS (Security)

HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.

https://www.rfc-editor.org/rfc/rfc6797#section-6.1
First2026-08-24 00:03:38
Last2026-08-26 01:56:02
Seen161
Node.js.svg
Node.js (Programming languages)

Node.js is an open-source, cross-platform, JavaScript runtime environment that executes JavaScript code outside a web browser.

https://nodejs.org
First2026-08-24 00:03:38
Last2026-08-26 01:56:02
Seen161
C3.js.png
C3.js (JavaScript libraries)

D3 based reusable chart library

https://c3js.org/
First2026-08-24 22:31:43
Last2026-08-24 22:42:19
Seen2

Certificates

1
Google Trust Services
c11b897fcf19f954547105e1704703ecccc54022c4577b0a60286a187d1524b5
Subject CNsubstack.com
Subject Orgunknown
Issuer CNWE1
Valid From2026-07-22 09:54:58
Valid To2026-10-20 10:54:53

Cookies

13
NamePathSameSiteFlagsFirst SeenLast Seen
substack.lli/nonesecure, persistent2026-08-24 00:03:382026-08-26 01:56:02
ab_testing_id/laxsecure, httpOnly, persistent2026-08-24 00:03:382026-08-26 01:56:02
disable_html_pixels/unspecifiedhostOnly, persistent2026-08-24 00:04:492026-08-26 01:56:02
ab_experiment_sampled/laxsecure, httpOnly, persistent2026-08-24 00:03:382026-08-26 01:56:02
AWSALBTG/unspecifiedhostOnly, persistent2026-08-24 00:03:382026-08-26 01:56:02
AWSALBTGCORS/nonesecure, hostOnly, persistent2026-08-24 00:03:382026-08-26 01:56:02
__cf_bm/nonesecure, httpOnly, persistent2026-08-24 00:03:382026-08-26 01:56:02
cf_clearance/nonesecure, httpOnly, partitioned, persistent2026-08-24 00:04:492026-08-26 01:56:02
cookie_storage_key/nonesecure, persistent2026-08-24 00:03:382026-08-26 01:56:02
disable_experiments/unspecifiedhostOnly2026-08-24 00:03:382026-08-26 01:56:02
disable_html_pixels/unspecifiedhostOnly2026-08-24 00:03:382026-08-26 01:56:02
ajs_anonymous_id/strictpersistent2026-08-24 15:35:312026-08-24 15:36:27
ajs_anonymous_id/stricthostOnly, persistent2026-08-24 15:35:312026-08-24 15:36:27

HTTP Headers

34
x-service x161
timing-allow-origin x150
vary x161
x-cluster x161
x-content-type-options x157
x-deploy x161
x-powered-by x161
x-served-by x161
access-control-allow-origin x158
alt-svc x161
cache-control x161
cf-cache-status x161
cf-chl-out-s x150
cf-ray x161
content-encoding x161
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content-security-policy x161
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location x158
priority x160
server x161
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set-cookie x161
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age x55
content-security-policy-report-only x13
reporting-endpoints x13
report-to x13
x-firefox-spdy x14
x-robots-tag x3
etag x2
link x2

MIME Types

5
application/javascript
Seen 157 times
image/x-icon
Seen 95 times
text/html
Seen 161 times
text/plain
Seen 150 times
application/json
Seen 2 times

Relations

Hosts observed redirecting, loading, calling, or embedding one another.

11
SourceRelationTargetFirst SeenLast SeenSeen
substack.comredirects tosubstackcdn.com2026-08-24 00:04:492026-08-26 01:56:0295
substack.comloads fromsubstackcdn.com2026-08-24 00:04:492026-08-26 01:56:02160
carolinehagood.substack.comembedssubstack.com2026-08-25 23:43:212026-08-25 23:43:211
marissameyer.substack.comembedssubstack.com2026-08-25 20:32:352026-08-25 20:32:351
www.dropsitenews.comembedssubstack.com2026-08-24 04:27:342026-08-25 11:54:2158
www.timerichclub.comembedssubstack.com2026-08-25 07:25:542026-08-25 07:25:541
substack.comloads fromfonts.gstatic.com2026-08-24 15:35:312026-08-24 15:36:272
protect.checkpoint.comredirects tosubstack.com2026-08-24 15:35:312026-08-24 15:36:272
www.acornsweetleaf.comembedssubstack.com2026-08-24 13:54:572026-08-24 13:54:571
www.golfbusinessreview.comembedssubstack.com2026-08-24 04:03:152026-08-24 04:03:151
usg02.safelinks.protection.office365.usredirects tosubstack.com2026-08-24 00:03:382026-08-24 00:03:381