Check-Host.cc

IP Address IPv4

188.185.6.133

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

Run a live full scan of 188.185.6.133

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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ASN
AS513
CERN
Country
CH
Switzerland
Reverse DNS
PTR
Open Ports
Last scan

Autonomous System

ASN
AS Name
CERN
AS Type
RIR
RIPE NCC
Allocated
1992-11-17
Allocation status
Allocated

Geolocation

Country
CH · Switzerland
Continent
Europe
Source
MaxMind GeoLite2

Reverse DNS

PTR
Last seen

Network

RPKI

Open Ports

Port-scan data not yet ingested

Open-port and banner-grab data from our scan layer will appear here. World-sweep covers all IPv4 over time — this host may be in a /8 we haven't reached yet.

TLS Certificates

TLS certificate observations pending

Once our scan layer captures a TLS cert from this IP, certificate chain, JARM and JA4S fingerprints will appear here.

Tech Stack

Detected via Wappalyzer-style rules on the HTTP response body, headers, scripts and meta tags.

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-leak candidates for this IP

When this IP serves a TLS cert for a domain that fronts behind a CDN, that domain surfaces here as an origin-leak candidate with a confidence score.

Multi-Vantage Check

Reachability accrued passively from real user-triggered checks across our 65+ probe nodes. Run a live check to add fresh data.

No accumulated reachability data yet

Reachability accrues from real user-triggered checks. Trigger a Ping or HTTP check from our 65+ probe nodes to contribute the first data point.

Web Pages

Port Page title Status Flags
443 CERN Document Server 200

Threat Intelligence

No threat-intel matches

This IP doesn't appear in any of the feeds we mirror (Tor exits, FireHOL Level 1-3, Spamhaus DROP/EDROP, URLhaus, OpenPhish). Absence here doesn't prove the IP is clean — it just means none of our public-feed sources flag it.

Co-Hosted Domains

Domains this host references in its HTML AND whose DNS A/AAAA record resolves back to this IP — i.e. actually hosted here.

cds.cern.ch DNS-confirmed
cds.cern.ch DNS-confirmed

External References

Domains the body links to whose DNS does NOT resolve to this IP — usually CDN assets, embeds, or third-party services. Boilerplate (Google Fonts, jsDelivr, w3.org…) is already filtered.

home.cern href · ×4
videos.cern.ch href · ×4
repository.cern href · ×3
cern.service-now.com href · ×3
cern.ch href · ×3
cds-blog.web.cern.ch href · ×2
library.cern href · ×2
cern60.web.cern.ch href · ×1
inspirebeta.net href · ×1
framework.web.cern.ch href · ×1
invenio-software.org href · ×1
secure.syndetics.com href · ×1
inspirehep.net href · ×1
www-lib.kek.jp href · ×1
cds-survey.cern.ch href · ×1

History

First observed
2026-05-26 22:01
Last observed
2026-05-26 22:02
Scan observations
2

The full change-log (ASN moves, cert rotations, port-state diffs) accumulates as our archives grow.