Check-Host.cc
Try 1.1.1.1 AS13335 check-host.cc /country/de /tld/cc
Domain

00f.workers.dev

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

DNS Check HTTP Check Run Full Scan .dev TLD

Run a live full scan of 00f.workers.dev

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
5
A/AAAA targets
Subdomains
11
CT + scan + body
Record Types
1
seen in DNS
Observed Certs
11
in our scans

DNS Records

A
—
AAAA
—
MX
—
NS
javon.ns.cloudflare.com, leah.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

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
hello-world-dawn-band-b28f.00f.workers.dev
2606:4700:3030::ac43:bc94 2606:4700:3037::ac43:bc94 172.67.188.148 104.21.19.194 +1
2026-08-21 02:05:45.311
worker-lively-wave-8287.00f.workers.dev
172.67.188.148 104.21.19.194 2606:4700:3037::6815:13c2 2606:4700:3037::ac43:bc94
2026-08-21 02:36:49.760
00f-hello-world.00f.workers.dev DNS pending —
00f.workers.dev DNS pending —

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.

2b08e5d7d37b6151… google · argon2026h2
Subject: 00f.workers.dev
Issuer: WE1
SANs: 00f.workers.dev, *.worker-lively-wave-8287.00f.workers.dev
Valid: 2026-08-09 22:11:54 → 2026-11-07 23:11:50
3ff964ff1dee5381… digicert · wyvern2026h2
Subject: 00f.workers.dev
Issuer: WR1
SANs: 00f.workers.dev, *.worker-lively-wave-8287.00f.workers.dev
Valid: 2026-08-09 22:11:44 → 2026-11-07 23:11:39
f5a576f0045bf799… digicert · wyvern2026h2
Subject: 00f.workers.dev
Issuer: WE1
SANs: 00f.workers.dev, *.worker-lively-wave-8287.00f.workers.dev
Valid: 2026-08-09 21:53:42 → 2026-11-07 22:53:24
e73d03c8f8e3e98e… digicert · wyvern2026h2
Subject: 00f.workers.dev
Issuer: WR1
SANs: 00f.workers.dev, *.worker-lively-wave-8287.00f.workers.dev
Valid: 2026-08-09 21:53:17 → 2026-11-07 22:50:10
5aa912476e39463b… google · argon2026h2
Subject: 00f.workers.dev
Issuer: WE1
SANs: 00f.workers.dev, *.00f-hello-world.00f.workers.dev
Valid: 2026-08-09 02:48:35 → 2026-11-07 03:48:32
c433836bba16e80b… google · xenon2026h2
Subject: 00f.workers.dev
Issuer: WR1
SANs: 00f.workers.dev, *.00f-hello-world.00f.workers.dev
Valid: 2026-08-09 02:48:25 → 2026-11-07 03:44:11
817656f828932ae7… google · argon2026h2
Subject: 00f.workers.dev
Issuer: WE1
SANs: 00f.workers.dev, *.hello-world-dawn-band-b28f.00f.workers.dev
Valid: 2026-08-05 18:50:42 → 2026-11-03 19:50:24
4e5ed088599ef1cf… digicert · wyvern2026h2
Subject: 00f.workers.dev
Issuer: WR1
SANs: 00f.workers.dev, *.hello-world-dawn-band-b28f.00f.workers.dev
Valid: 2026-08-05 18:41:09 → 2026-11-03 19:38:08
835c8124b93f9793… cloudflare · nimbus2026
Subject: 00f.workers.dev
Issuer: WE1
SANs: 00f.workers.dev, *.00f.workers.dev
Valid: 2026-07-07 21:39:07 → 2026-10-05 22:37:23
3f4c896d050f8c14… cloudflare · nimbus2026
Subject: 00f.workers.dev
Issuer: WE1
SANs: 00f.workers.dev, *.00f-hello-world.00f.workers.dev
Valid: 2026-06-11 02:30:33 → 2026-09-09 03:29:51
577b63f7c9c3e484… google · xenon2026h2
Subject: 00f.workers.dev
Issuer: WR1
SANs: 00f.workers.dev, *.hello-world-dawn-band-b28f.00f.workers.dev
Valid: 2026-06-07 18:13:11 → 2026-09-05 19:10:45

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 leah.ns.cloudflare.com 2026-06-17 13:12:01.163 2026-08-21 02:36:49.760
NS javon.ns.cloudflare.com 2026-06-17 13:12:01.163 2026-08-21 02:36:49.760