Public technology profileFresh scan

substack.com

Our latest scan of substack.com detected 14 technologies across 9 categories. The strongest signals include Amazon S3, Cloudflare, Cloudflare Bot Management.

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14
Technologies
9
Categories
95%
Avg. confidence
1d ago
Last scanned

Current snapshot

Detected technology stack

Grouped by category · confidence is detection certainty

JavaScript frameworks

3 detected
Preact
First seen Jul 17, 2026Last seen Jul 17, 2026
100%
confidence
React Router
v7.6.2
First seen Jul 17, 2026Last seen Jul 17, 2026
100%
confidence
React
First seen Jul 17, 2026Last seen Jul 17, 2026
80%
confidence

CDN & delivery

2 detected
Amazon S3
First seen Jul 17, 2026Last seen Jul 17, 2026
100%
confidence
Cloudflare
First seen Jul 17, 2026Last seen Jul 17, 2026
100%
confidence

Backend

2 detected
Sentry
First seen Jul 17, 2026Last seen Jul 17, 2026
100%
confidence
Node.js
First seen Jul 17, 2026Last seen Jul 17, 2026
80%
confidence

Frameworks

1 detected
Express
First seen Jul 17, 2026Last seen Jul 17, 2026
100%
confidence

Frontend

1 detected
Lucide
First seen Jul 17, 2026Last seen Jul 17, 2026
100%
confidence

Other

1 detected
PWA
First seen Jul 17, 2026Last seen Jul 17, 2026
100%
confidence

CMS

1 detected
Substack
First seen Jul 17, 2026Last seen Jul 17, 2026
100%
confidence

Hosting & infrastructure

1 detected
Amazon Web Services
First seen Jul 17, 2026Last seen Jul 17, 2026
80%
confidence

Publisher intelligence

Advertising ecosystem

Declared direct and reseller relationships from ads.txt and app-ads.txt. These are publisher declarations, not runtime detections.

Declaration files

0/2

ads.txt and app-ads.txt

Direct relationships

0

Reseller relationships

0

Declared systems

0

Counted per declaration file

ads.txt

Not presentHTTP 404
Direct
0
Reseller
0
Systems
0

app-ads.txt

Not presentHTTP 404
Direct
0
Reseller
0
Systems
0

Infrastructure

Network and security

DNS, hosting, TLS and email-security evidence observed during the latest scan. Incomplete lookups remain explicitly unknown.

Transport and email security

HTTPSObserved
HSTSObserved on scanned response
SPFConfigured
DMARCConfigured · reject
Certificate issuer
Google Trust Services WE1

Network footprint

Observed host
substack.com
Nameservers
ali.ns.cloudflare.com, lee.ns.cloudflare.com
Resolved IPs
104.18.37.200, 172.64.150.56, 2606:4700:4401::ac40:9638, 2606:4700:4404::6812:25c8
Provider evidence
Cloudflare, Google Trust Services

Site signals

Content and capabilities

Structured data, languages, social platforms and page capabilities observed across the scanned pages.

Languages

en

Currencies

CHFDKKGBPNOKSEKUSD

Observed capabilities

Responsive viewportApple touch iconSearch form

1 form elements observed across scanned pages.

Recent technology changes

Observed changes between stored scans, not vendor-confirmed installation dates.

First detected
Amazon S3100% confidenceJul 17, 2026, 10:24 AM
First detected
Amazon Web Services80% confidenceJul 17, 2026, 10:24 AM
First detected
Cloudflare100% confidenceJul 17, 2026, 10:24 AM
First detected
Cloudflare Bot Management100% confidenceJul 17, 2026, 10:24 AM
First detected
Express100% confidenceJul 17, 2026, 10:24 AM
First detected
Google Trust Services95% confidenceJul 17, 2026, 10:24 AM
First detected
Lucide100% confidenceJul 17, 2026, 10:24 AM
First detected
Node.js80% confidenceJul 17, 2026, 10:24 AM
First detected
PWA100% confidenceJul 17, 2026, 10:24 AM
First detected
Preact100% confidenceJul 17, 2026, 10:24 AM
First detected
React80% confidenceJul 17, 2026, 10:24 AM
First detected
React Router100% confidenceJul 17, 2026, 10:24 AM
substack.com technology stack: Amazon S3, Cloudflare, Cloudflare Bot Management | Glympt