Check-Host.cc

IP Address IPv4

91.220.201.25

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

Run a live full scan of 91.220.201.25

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
AS198725
Click for details
Country
CZ
Czechia
Reverse DNS
PTR
Open Ports
2
Last scan

Autonomous System

ASN
AS Name
AS Type
RIR
RIPE NCC
Allocated
2012-04-24
Allocation status
Assigned

Geolocation

Country
CZ · Czechia
Continent
Europe
Source
MaxMind GeoLite2

Reverse DNS

PTR
Last seen

Network

RPKI

Open Ports

Port Proto Service Server Last seen
80 tcp http Apache/2.4.59 (Debian) 2026-05-26 19:11:36.000
443 tcp https Apache/2.4.59 (Debian) 2026-07-28 01:46:00.000

TLS Certificates

Port 443 03994a568408…
Subject: ara.ultimum.io
Issuer: YR2
SANs: ara.ultimum.io, cz1.ultimum.io, dockerhub.ultimum.io, helm.ultimum.io, internal.ultimum.io, keycloak.ultimum.io, public.ultimum.io, pypi.ultimum.io
Valid 2026-06-29 07:40:25 → 2026-09-27 07:40:24

Tech Stack

Wappalyzer fingerprinting pending

HTTP-body analysis identifies web frameworks, CMS platforms, analytics, JS libraries and server-side languages from this host.

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
443 401 Unauthorized 401
80 301 Moved Permanently 301

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.

ara.ultimum.io DNS-confirmed

External References

No external references found yet

As HTML bodies get banner-grabbed, references to external domains land here.

History

First observed
2026-05-26 19:11
Last observed
2026-07-28 01:46
Scan observations
4

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