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

404bard.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 404bard.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
4
A/AAAA targets
Subdomains
4
CT + scan + body
Record Types
1
seen in DNS
Observed Certs
7
in our scans

DNS Records

A
—
AAAA
—
MX
—
NS
arvind.ns.cloudflare.com, kristina.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
cool-block-0c31.404bard.workers.dev
104.21.80.238 2606:4700:3035::6815:50ee 2606:4700:3033::ac43:9b96 172.67.155.150
2026-08-21 05:22:26.261
404bard.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.

722693f1a8b9b855… google · xenon2026h2
Subject: 404bard.workers.dev
Issuer: WE1
SANs: 404bard.workers.dev, *.404bard.workers.dev
Valid: 2026-08-09 19:56:30 → 2026-11-07 20:56:25
f7d83d42ab84bbf7… google · argon2026h2
Subject: 404bard.workers.dev
Issuer: WE1
SANs: 404bard.workers.dev, *.404bard.workers.dev
Valid: 2026-08-09 19:56:30 → 2026-11-07 20:56:25
2e6c0cf5c1bd4426… digicert · wyvern2026h2
Subject: 404bard.workers.dev
Issuer: WE1
SANs: 404bard.workers.dev, *.404bard.workers.dev
Valid: 2026-08-09 19:15:34 → 2026-11-07 20:14:07
11e823cbd52d005b… google · xenon2026h2
Subject: 404bard.workers.dev
Issuer: YE1
SANs: *.404bard.workers.dev, 404bard.workers.dev
Valid: 2026-08-06 13:28:01 → 2026-11-04 13:28:00
c2129e4e038a4ca7… digicert · wyvern2026h2
Subject: 404bard.workers.dev
Issuer: WE1
SANs: 404bard.workers.dev, *.cool-block-0c31.404bard.workers.dev
Valid: 2026-07-30 10:05:04 → 2026-10-28 11:05:01
6f14dbff481be161… digicert · wyvern2026h2
Subject: 404bard.workers.dev
Issuer: WE1
SANs: 404bard.workers.dev, *.cool-block-0c31.404bard.workers.dev
Valid: 2026-07-30 09:52:14 → 2026-10-28 10:52:08
aa8830e5639895da… google · xenon2026h2
Subject: 404bard.workers.dev
Issuer: WR1
SANs: 404bard.workers.dev, *.cool-block-0c31.404bard.workers.dev
Valid: 2026-06-01 09:31:43 → 2026-08-30 10:29:12

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 arvind.ns.cloudflare.com 2026-06-04 05:45:37.248 2026-08-11 04:55:43.790
NS kristina.ns.cloudflare.com 2026-06-04 05:45:37.248 2026-08-11 04:55:43.790