Check-Host.cc

Domain

000undefined.com

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

Run a live full scan of 000undefined.com

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

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Hosting IPs
3
A/AAAA targets
Subdomains
3
CT + scan + body
Record Types
4
seen in DNS
Observed Certs
in our scans

DNS Records

A
23.227.38.32
AAAA
MX
1 aspmx.l.google.com, 10 alt3.aspmx.l.google.com, 10 alt4.aspmx.l.google.com, 5 alt1.aspmx.l.google.com, 5 alt2.aspmx.l.google.com
NS
ns17.domaincontrol.com, ns18.domaincontrol.com
TXT
facebook-domain-verification=x16migq92vxyfljfyl9da42vpmq1k7, google-site-verification=dt6msXJ8Pp3Sfc41Qi6VlFZFunYOJ7IiAGxE2EHP-UE, google-site-verification=tRl_UggZoYTCePNrjRZcMaC47srE8zX1rcyCJatR1w4, v=spf1 include:dc-aa8e722993._spfm.000undefined.com ~all
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

Every subdomain we know about — harvested from CT-log SANs, scan-observed certs and HTML body references — paired with its current A/AAAA target.

Subdomain Resolves to Last seen
account.000undefined.com 2026-05-31 05:20:11.521
www.000undefined.com 2026-05-31 05:20:11.521
000undefined.com 2026-05-31 05:20:11.521

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.

3770b2939bae7539… sectigo · elephant2026h1
Subject: 000undefined.com
Issuer: WE1
SANs: 000undefined.com
Valid: 2026-01-23 08:45:44 → 2026-04-23 09:45:43
09d921a58f539952… sectigo · elephant2026h1
Subject: 000undefined.com
Issuer: WR1
SANs: 000undefined.com
Valid: 2026-01-23 08:45:37 → 2026-04-23 09:44:22
32d71c941c01c12f… sectigo · elephant2026h1
Subject: 000undefined.com
Issuer: E7
SANs: 000undefined.com
Valid: 2025-12-07 11:07:05 → 2026-03-07 11:07:04
9b69b029cd6421b5… sectigo · elephant2026h1
Subject: 000undefined.com
Issuer: E7
SANs: 000undefined.com
Valid: 2025-12-07 11:07:05 → 2026-03-07 11:07:04
a04539da1ff238c3… sectigo · elephant2026h1
Subject: 000undefined.com
Issuer: E7
SANs: 000undefined.com
Valid: 2025-12-01 14:56:35 → 2026-03-01 14:56:34
e4e485de6f55e05d… cloudflare · nimbus2026
Subject: 000undefined.com
Issuer: WE1
SANs: 000undefined.com
Valid: 2025-11-25 06:57:55 → 2026-02-23 07:57:44
3087794ce07a2c68… sectigo · elephant2026h1
Subject: 000undefined.com
Issuer: WE1
SANs: 000undefined.com
Valid: 2025-11-25 06:57:55 → 2026-02-23 07:57:44
e4e485de6f55e05d… sectigo · elephant2026h1
Subject: 000undefined.com
Issuer: WE1
SANs: 000undefined.com
Valid: 2025-11-25 06:57:55 → 2026-02-23 07:57:44
f7602d571eb0a8ad… sectigo · elephant2026h1
Subject: 000undefined.com
Issuer: WR1
SANs: 000undefined.com
Valid: 2025-11-25 06:57:38 → 2026-02-23 07:56:25

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 v=spf1 include:dc-aa8e722993._spfm.000undefined.com ~all 2026-05-31 05:20:11.521 2026-05-31 05:20:11.521
NS ns18.domaincontrol.com 2026-05-31 05:20:11.521 2026-05-31 05:20:11.521
TXT facebook-domain-verification=x16migq92vxyfljfyl9da42vpmq1k7 2026-05-31 05:20:11.521 2026-05-31 05:20:11.521
TXT google-site-verification=dt6msXJ8Pp3Sfc41Qi6VlFZFunYOJ7IiAGxE2EHP-UE 2026-05-31 05:20:11.521 2026-05-31 05:20:11.521
MX 5 alt2.aspmx.l.google.com 2026-05-31 05:20:11.521 2026-05-31 05:20:11.521
MX 10 alt4.aspmx.l.google.com 2026-05-31 05:20:11.521 2026-05-31 05:20:11.521
MX 1 aspmx.l.google.com 2026-05-31 05:20:11.521 2026-05-31 05:20:11.521
A 23.227.38.32 2026-05-31 05:20:11.521 2026-05-31 05:20:11.521
NS ns17.domaincontrol.com 2026-05-31 05:20:11.521 2026-05-31 05:20:11.521
MX 5 alt1.aspmx.l.google.com 2026-05-31 05:20:11.521 2026-05-31 05:20:11.521
MX 10 alt3.aspmx.l.google.com 2026-05-31 05:20:11.521 2026-05-31 05:20:11.521
TXT google-site-verification=tRl_UggZoYTCePNrjRZcMaC47srE8zX1rcyCJatR1w4 2026-05-31 05:20:11.521 2026-05-31 05:20:11.521