Check-Host.cc

Domain

repository.cern

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

Run a live full scan of repository.cern

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
2
A/AAAA targets
Subdomains
9
CT + scan + body
Record Types
3
seen in DNS
Observed Certs
4
in our scans

DNS Records

A
137.138.6.31
AAAA
2001:1458:201:8b::100:1c8
MX
NS
ext-dns-1.cern.ch, ext-dns-2.cern.ch
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
repository.cern 2026-06-04 22:33:40.391

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

Hosts whose HTML body references this domain. Strong signal for origin/mirror/embed discovery.

188.185.6.133:443 href · ×3

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
AAAA 2001:1458:201:8b::100:1c8 2026-05-27 06:31:58.948 2026-06-04 22:33:40.391
A 137.138.6.31 2026-05-27 06:31:58.948 2026-06-04 22:33:40.391
NS ext-dns-1.cern.ch 2026-05-27 06:31:58.948 2026-06-04 22:33:40.391
NS ext-dns-2.cern.ch 2026-05-27 06:31:58.948 2026-06-04 22:33:40.391