Check-Host.cc

Domain

api.chatgpt.com

Aggregated from public BGP, CT logs, our scan layer, honeypots and global probes.

Run a live full scan of api.chatgpt.com

On-demand: ports, banners, TLS, tech-stack, subdomains and origin/IP-leak detection. Results are shared publicly for everyone to link to.

Deep-scan now
Hosting IPs
A/AAAA targets
Subdomains
CT + scan + body
Record Types
seen in DNS
Observed Certs
in our scans

DNS Records

A
104.18.36.29, 172.64.151.227
AAAA
2606:4700:4408::ac40:97e3, 2a06:98c1:3106::6812:241d
MX
NS
coraline.ns.cloudflare.com, pranab.ns.cloudflare.com
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.

CT-Log Evidence

Certificates from public Certificate Transparency logs whose subject or SAN names this domain — including historic certs we never observed live.

3f7f97d17bc9cd55… google · xenon2026h2
Subject: api.chatgpt.com
Issuer: E8
SANs: *.api.chatgpt.com, api.chatgpt.com
Valid: 2026-04-06 07:40:12 → 2026-07-05 07:40:11
67c22af96db9eebb… google · xenon2026h2
Subject: api.chatgpt.com
Issuer: E8
SANs: *.api.chatgpt.com, api.chatgpt.com
Valid: 2026-04-06 07:40:12 → 2026-07-05 07:40:11
68f552e35d999c33… google · xenon2026h2
Subject: api.chatgpt.com
Issuer: R12
SANs: *.api.chatgpt.com, api.chatgpt.com
Valid: 2026-04-06 07:39:52 → 2026-07-05 07:39:51
d307c6c9d441d53f… sectigo · elephant2026h1
Subject: api.chatgpt.com
Issuer: E7
SANs: *.api.chatgpt.com, api.chatgpt.com
Valid: 2026-02-05 08:52:51 → 2026-05-06 08:52:50
f943d0fc1a5402c5… sectigo · elephant2026h1
Subject: api.chatgpt.com
Issuer: R12
SANs: *.api.chatgpt.com, api.chatgpt.com
Valid: 2026-02-05 08:52:45 → 2026-05-06 08:52:44
b23f3d819e71427e… sectigo · elephant2026h1
Subject: api.chatgpt.com
Issuer: E8
SANs: *.api.chatgpt.com, api.chatgpt.com
Valid: 2026-01-26 08:43:44 → 2026-04-26 08:43:43
b4ae47e203ee24e3… sectigo · elephant2026h1
Subject: api.chatgpt.com
Issuer: R13
SANs: *.api.chatgpt.com, api.chatgpt.com
Valid: 2026-01-26 08:43:41 → 2026-04-26 08:43:40
78563b898a39a6f6… sectigo · elephant2026h1
Subject: api.chatgpt.com
Issuer: R13
SANs: *.api.chatgpt.com, api.chatgpt.com
Valid: 2025-12-08 07:23:34 → 2026-03-08 07:23:33
aaa1eba36d7ed0e4… sectigo · elephant2026h1
Subject: api.chatgpt.com
Issuer: R13
SANs: *.api.chatgpt.com, api.chatgpt.com
Valid: 2025-12-08 07:23:34 → 2026-03-08 07:23:33
8b7afb29caef3bd1… sectigo · elephant2026h1
Subject: api.chatgpt.com
Issuer: E7
SANs: *.api.chatgpt.com, api.chatgpt.com
Valid: 2025-11-28 09:17:07 → 2026-02-26 09:17:06
8b7afb29caef3bd1… cloudflare · nimbus2026
Subject: api.chatgpt.com
Issuer: E7
SANs: *.api.chatgpt.com, api.chatgpt.com
Valid: 2025-11-28 09:17:07 → 2026-02-26 09:17:06
42a348d58d2b5f42… sectigo · elephant2026h1
Subject: api.chatgpt.com
Issuer: R13
SANs: *.api.chatgpt.com, api.chatgpt.com
Valid: 2025-11-28 09:17:02 → 2026-02-26 09:17:01
42a348d58d2b5f42… cloudflare · nimbus2026
Subject: api.chatgpt.com
Issuer: R13
SANs: *.api.chatgpt.com, api.chatgpt.com
Valid: 2025-11-28 09:17:02 → 2026-02-26 09:17:01
2e5c85e40c6a204a… sectigo · elephant2026h1
Subject: api.chatgpt.com
Issuer: E8
SANs: *.api.chatgpt.com, api.chatgpt.com
Valid: 2025-10-14 03:28:19 → 2026-01-12 03:28:18
663bbf5e8f209013… cloudflare · nimbus2026
Subject: api.chatgpt.com
Issuer: E8
SANs: *.api.chatgpt.com, api.chatgpt.com
Valid: 2025-10-14 03:28:19 → 2026-01-12 03:28:18
24345ae600ee10e3… sectigo · elephant2026h1
Subject: api.chatgpt.com
Issuer: R13
SANs: *.api.chatgpt.com, api.chatgpt.com
Valid: 2025-10-10 06:12:48 → 2026-01-08 06:12:47
24345ae600ee10e3… google · xenon2026h1
Subject: api.chatgpt.com
Issuer: R13
SANs: *.api.chatgpt.com, api.chatgpt.com
Valid: 2025-10-10 06:12:48 → 2026-01-08 06:12:47

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
NS coraline.ns.cloudflare.com 2026-07-21 21:52:37.258 2026-07-21 21:52:37.258
A 172.64.151.227 2026-07-21 21:52:37.258 2026-07-21 21:52:37.258
NS pranab.ns.cloudflare.com 2026-07-21 21:52:37.258 2026-07-21 21:52:37.258
A 104.18.36.29 2026-07-21 21:52:37.258 2026-07-21 21:52:37.258
AAAA 2606:4700:4408::ac40:97e3 2026-07-21 21:52:37.258 2026-07-21 21:52:37.258
AAAA 2a06:98c1:3106::6812:241d 2026-07-21 21:52:37.258 2026-07-21 21:52:37.258