substack.com
Aggregated from public BGP, CT logs, our scan layer, honeypots and global probes.
Run a live full scan of substack.com
On-demand: ports, banners, TLS, tech-stack, subdomains and origin/IP-leak detection. Results are shared publicly for everyone to link to.
DNS Records
WHOIS / Registration
Registration data planned
Registrar, creation/expiry dates and domain status via RDAP. Rolling out gradually — bulk WHOIS is rate-limited, so we resolve on a prioritized cadence.
Subdomains
Subdomain enumeration pending
Every subdomain ever issued a TLS cert under this apex — extracted from Certificate Transparency logs, our own scan observations and body references.
Tech Stack
Tech detection pending
Wappalyzer-rules detect CMS, frameworks, analytics, JS libs and server-side languages on this domain.
TLS Certificates
Certificate observations pending
TLS certs naming this domain in subject or SANs will appear here as our scan-layer catches them.
IPs Citing This Domain
Hosts whose HTML body references this domain. Strong signal for origin/mirror/embed discovery.
Origin / IP-Leak
When a hostname is served behind a CDN (e.g. Cloudflare), the origin server can sometimes be identified by matching its TLS cert against the protected hostname. Findings shown here are heuristic candidates, not guarantees.
No origin-IP leaks detected (yet)
Either this domain doesn't sit behind a CDN, or we haven't seen a TLS cert from a non-CDN IP matching this hostname. Run a fullscan to refresh the cert→IP cross-reference.
CT-Log Evidence
Certificates from public Certificate Transparency logs whose subject or SAN names this domain — including historic certs we never observed live.
Threat Intelligence
Domain threat-intel pending
Matches in URLhaus, OpenPhish, PhishTank, malware feeds, and Spamhaus DBL.
History
Passive DNS — every value this name ever resolved to and when we first / last observed it. Updates every cycle of our forward-DNS crawler.
| Type | Value | First seen | Last seen |
|---|---|---|---|
| TXT | facebook-domain-verification=8vbxp2ntmkudc6is3h5r840c9fwo7f | 2026-05-26 04:32:49.683 | 2026-07-28 13:32:41.076 |
| NS | ali.ns.cloudflare.com | 2026-05-26 04:32:49.683 | 2026-07-28 13:32:41.076 |
| TXT | tiktok-developers-site-verification=7PgqCAJ52ILLOqf2KELd8uaRfJpuzaLQ | 2026-05-26 04:32:49.683 | 2026-07-28 13:32:41.076 |
| TXT | google-site-verification=vQEKLOUDfKNOQAv9W3EUMiRD6e5ibAEPhc2yCzP7big | 2026-05-26 04:32:49.683 | 2026-07-28 13:32:41.076 |
| NS | lee.ns.cloudflare.com | 2026-05-26 04:32:49.683 | 2026-07-28 13:32:41.076 |
| MX | 10 mxb.mailgun.org | 2026-05-26 04:32:49.683 | 2026-07-28 13:32:41.076 |
| TXT | google-site-verification=4V_X38Yf0J4VJcWFwtG38bOS1nkOWeIWJhticlMgNQE | 2026-05-26 04:32:49.683 | 2026-07-28 13:32:41.076 |
| TXT | google-site-verification=DAkdykID6WqQM6tT7IfSu9_uB7-qIdB039MA_C3T3eA | 2026-05-26 04:32:49.683 | 2026-07-28 13:32:41.076 |
| TXT | google-site-verification=FfNIQIxsRHpj3Y7E_d3N6GFqGgWDZ-sfYojqCilwtqE | 2026-05-26 04:32:49.683 | 2026-07-28 13:32:41.076 |
| MX | 10 mxa.mailgun.org | 2026-05-26 04:32:49.683 | 2026-07-28 13:32:41.076 |
| A | 172.64.150.56 | 2026-05-26 04:32:49.683 | 2026-07-28 13:32:41.076 |
| AAAA | 2606:4700:440b::6812:25c8 | 2026-05-26 04:32:49.683 | 2026-06-19 15:59:42.563 |
| TXT | v=spf1 include:_spf.google.com include:mailgun.org include:mail.zendesk.com ~all | 2026-05-26 04:32:49.683 | 2026-07-28 13:32:41.076 |
| A | 104.18.37.200 | 2026-05-26 04:32:49.683 | 2026-07-28 13:32:41.076 |
| TXT | google-site-verification=SXEl7_p4SBszcanSWwVc_3-RFky80c0-94janbeeWI4 | 2026-05-26 04:32:49.683 | 2026-07-28 13:32:41.076 |
| TXT | tiktok-developers-site-verification=A9XRSo8lWy5CPFJ0bqI04KCpUZGAAq7p | 2026-05-26 04:32:49.683 | 2026-07-28 13:32:41.076 |
| AAAA | 2606:4700:4400::ac40:9638 | 2026-05-26 04:32:49.683 | 2026-06-19 15:59:42.563 |
| AAAA | 2606:4700:4404::6812:25c8 | 2026-06-20 11:54:45.529 | 2026-07-28 13:32:41.076 |
| AAAA | 2606:4700:4401::ac40:9638 | 2026-06-20 11:54:45.529 | 2026-07-28 13:32:41.076 |