Domain
cdn.substack.com
Aggregated from public BGP, CT logs, our scan layer, honeypots and global probes.
Run a live full scan of cdn.substack.com
On-demand: ports, banners, TLS, tech-stack, subdomains and origin/IP-leak detection. Results are shared publicly for everyone to link to.
Hosting IPs
54
A/AAAA targets
Subdomains
—
CT + scan + body
Record Types
3
seen in DNS
Observed Certs
—
in our scans
DNS Records
A
13.225.239.118, 13.225.239.28, 13.225.239.83, 13.225.239.89, 3.173.161.42, 3.173.161.59, 3.173.161.67, 3.173.161.98
AAAA
2600:9000:223d:2400:3:e0f8:540:93a1, 2600:9000:223d:3e00:3:e0f8:540:93a1, 2600:9000:223d:6c00:3:e0f8:540:93a1, 2600:9000:223d:7e00:3:e0f8:540:93a1, 2600:9000:223d:c000:3:e0f8:540:93a1, 2600:9000:223d:c600:3:e0f8:540:93a1, 2600:9000:223d:ca00:3:e0f8:540:93a1, 2600:9000:223d:dc00:3:e0f8:540:93a1
MX
—
NS
ns-1238.awsdns-26.org, ns-128.awsdns-16.com, ns-1946.awsdns-51.co.uk, ns-625.awsdns-14.net
TXT
—
CNAME
—
CAA
—
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
No citing IPs found yet
As the world-sweep progresses, hosts referencing this domain in their HTML will surface here.
Origin / IP-Leak
USP
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.
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 |
|---|---|---|---|
| A | 52.222.214.76 | 2026-06-03 07:24:51.666 | 2026-06-03 10:08:56.912 |
| A | 52.222.214.111 | 2026-06-03 07:24:51.666 | 2026-06-03 10:08:56.912 |
| AAAA | 2600:9000:223d:2400:3:e0f8:540:93a1 | 2026-06-03 07:24:51.666 | 2026-06-03 07:24:51.666 |
| A | 52.222.214.57 | 2026-06-03 07:24:51.666 | 2026-06-03 10:08:56.912 |
| AAAA | 2600:9000:223d:c000:3:e0f8:540:93a1 | 2026-06-03 07:24:51.666 | 2026-06-03 07:24:51.666 |
| AAAA | 2600:9000:223d:dc00:3:e0f8:540:93a1 | 2026-06-03 07:24:51.666 | 2026-06-03 07:24:51.666 |
| AAAA | 2600:9000:223d:6c00:3:e0f8:540:93a1 | 2026-06-03 07:24:51.666 | 2026-06-03 07:24:51.666 |
| AAAA | 2600:9000:223d:7e00:3:e0f8:540:93a1 | 2026-06-03 07:24:51.666 | 2026-06-03 07:24:51.666 |
| AAAA | 2600:9000:223d:3e00:3:e0f8:540:93a1 | 2026-06-03 07:24:51.666 | 2026-06-03 07:24:51.666 |
| A | 52.222.214.85 | 2026-06-03 07:24:51.666 | 2026-06-03 10:08:56.912 |
| AAAA | 2600:9000:223d:ca00:3:e0f8:540:93a1 | 2026-06-03 07:24:51.666 | 2026-06-03 07:24:51.666 |
| AAAA | 2600:9000:223d:c600:3:e0f8:540:93a1 | 2026-06-03 07:24:51.666 | 2026-06-03 07:24:51.666 |
| AAAA | 2600:9000:28dc:6800:3:e0f8:540:93a1 | 2026-06-03 10:08:56.912 | 2026-06-03 10:08:56.912 |
| NS | ns-128.awsdns-16.com | 2026-06-03 10:08:56.912 | 2026-06-20 22:46:32.724 |
| AAAA | 2600:9000:28dc:7600:3:e0f8:540:93a1 | 2026-06-03 10:08:56.912 | 2026-06-03 10:08:56.912 |
| AAAA | 2600:9000:28dc:6000:3:e0f8:540:93a1 | 2026-06-03 10:08:56.912 | 2026-06-03 10:08:56.912 |
| NS | ns-625.awsdns-14.net | 2026-06-03 10:08:56.912 | 2026-06-20 22:46:32.724 |
| AAAA | 2600:9000:28dc:bc00:3:e0f8:540:93a1 | 2026-06-03 10:08:56.912 | 2026-06-03 10:08:56.912 |
| NS | ns-1238.awsdns-26.org | 2026-06-03 10:08:56.912 | 2026-06-20 22:46:32.724 |
| AAAA | 2600:9000:28dc:aa00:3:e0f8:540:93a1 | 2026-06-03 10:08:56.912 | 2026-06-03 10:08:56.912 |
| NS | ns-1946.awsdns-51.co.uk | 2026-06-03 10:08:56.912 | 2026-06-20 22:46:32.724 |
| AAAA | 2600:9000:28dc:a400:3:e0f8:540:93a1 | 2026-06-03 10:08:56.912 | 2026-06-03 10:08:56.912 |
| AAAA | 2600:9000:28dc:3400:3:e0f8:540:93a1 | 2026-06-03 10:08:56.912 | 2026-06-03 10:08:56.912 |
| AAAA | 2600:9000:28dc:e200:3:e0f8:540:93a1 | 2026-06-03 10:08:56.912 | 2026-06-15 07:44:04.914 |
| AAAA | 2600:9000:28dc:7a00:3:e0f8:540:93a1 | 2026-06-15 07:41:11.158 | 2026-07-18 18:02:27.067 |
| AAAA | 2600:9000:28dc:c600:3:e0f8:540:93a1 | 2026-06-15 07:41:11.158 | 2026-06-15 07:41:11.158 |
| AAAA | 2600:9000:28dc:2200:3:e0f8:540:93a1 | 2026-06-15 07:41:11.158 | 2026-06-15 07:41:11.158 |
| A | 3.173.161.98 | 2026-06-15 07:41:11.158 | 2026-07-18 18:02:27.067 |
| AAAA | 2600:9000:28dc:9800:3:e0f8:540:93a1 | 2026-06-15 07:41:11.158 | 2026-06-15 07:41:11.158 |
| AAAA | 2600:9000:28dc:3c00:3:e0f8:540:93a1 | 2026-06-15 07:41:11.158 | 2026-06-15 07:41:11.158 |
| AAAA | 2600:9000:28dc:4a00:3:e0f8:540:93a1 | 2026-06-15 07:41:11.158 | 2026-07-18 18:02:27.067 |
| A | 3.173.161.59 | 2026-06-15 07:41:11.158 | 2026-07-18 18:02:27.067 |
| AAAA | 2600:9000:28dc:9600:3:e0f8:540:93a1 | 2026-06-15 07:41:11.158 | 2026-06-15 07:41:11.158 |
| A | 3.173.161.42 | 2026-06-15 07:41:11.158 | 2026-07-18 18:02:27.067 |
| A | 3.173.161.67 | 2026-06-15 07:41:11.158 | 2026-07-18 18:02:27.067 |
| AAAA | 2600:9000:28dc:ba00:3:e0f8:540:93a1 | 2026-06-15 07:41:11.158 | 2026-06-15 07:41:11.158 |
| AAAA | 2600:9000:28dc:6400:3:e0f8:540:93a1 | 2026-06-15 07:44:04.914 | 2026-06-15 07:44:04.914 |
| AAAA | 2600:9000:28dc:2c00:3:e0f8:540:93a1 | 2026-06-15 07:44:04.914 | 2026-06-20 22:46:32.724 |
| AAAA | 2600:9000:28dc:200:3:e0f8:540:93a1 | 2026-06-15 07:44:04.914 | 2026-06-15 07:44:04.914 |
| AAAA | 2600:9000:28dc:f800:3:e0f8:540:93a1 | 2026-06-15 07:44:04.914 | 2026-06-15 07:44:04.914 |
| AAAA | 2600:9000:28dc:f200:3:e0f8:540:93a1 | 2026-06-15 07:44:04.914 | 2026-06-15 07:44:04.914 |
| AAAA | 2600:9000:28dc:4800:3:e0f8:540:93a1 | 2026-06-15 07:44:04.914 | 2026-06-15 07:44:04.914 |
| AAAA | 2600:9000:28dc:6e00:3:e0f8:540:93a1 | 2026-06-20 22:46:32.724 | 2026-06-20 22:46:32.724 |
| AAAA | 2600:9000:28dc:4c00:3:e0f8:540:93a1 | 2026-06-20 22:46:32.724 | 2026-07-18 18:02:27.067 |
| A | 13.225.239.28 | 2026-06-20 22:46:32.724 | 2026-06-20 22:46:32.724 |
| AAAA | 2600:9000:28dc:8000:3:e0f8:540:93a1 | 2026-06-20 22:46:32.724 | 2026-06-20 22:46:32.724 |
| AAAA | 2600:9000:28dc:7800:3:e0f8:540:93a1 | 2026-06-20 22:46:32.724 | 2026-06-20 22:46:32.724 |
| AAAA | 2600:9000:28dc:dc00:3:e0f8:540:93a1 | 2026-06-20 22:46:32.724 | 2026-06-20 22:46:32.724 |
| AAAA | 2600:9000:28dc:1000:3:e0f8:540:93a1 | 2026-06-20 22:46:32.724 | 2026-06-20 22:46:32.724 |
| A | 13.225.239.89 | 2026-06-20 22:46:32.724 | 2026-06-20 22:46:32.724 |
| AAAA | 2600:9000:28dc:400:3:e0f8:540:93a1 | 2026-06-20 22:46:32.724 | 2026-06-20 22:46:32.724 |
| A | 13.225.239.118 | 2026-06-20 22:46:32.724 | 2026-06-20 22:46:32.724 |
| A | 13.225.239.83 | 2026-06-20 22:46:32.724 | 2026-06-20 22:46:32.724 |
| AAAA | 2600:9000:28dc:8400:3:e0f8:540:93a1 | 2026-07-18 18:02:27.067 | 2026-07-18 18:02:27.067 |
| AAAA | 2600:9000:28dc:b000:3:e0f8:540:93a1 | 2026-07-18 18:02:27.067 | 2026-07-18 18:02:27.067 |
| AAAA | 2600:9000:28dc:5a00:3:e0f8:540:93a1 | 2026-07-18 18:02:27.067 | 2026-07-18 18:02:27.067 |
| AAAA | 2600:9000:28dc:f400:3:e0f8:540:93a1 | 2026-07-18 18:02:27.067 | 2026-07-18 18:02:27.067 |
| AAAA | 2600:9000:28dc:c800:3:e0f8:540:93a1 | 2026-07-18 18:02:27.067 | 2026-07-18 18:02:27.067 |