Check-Host.cc

IP Address IPv4

213.73.14.37

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

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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
AS34076
Click for details
Country
PL
Poland
Reverse DNS
mail.zetoprojekt.pl
PTR
Open Ports
3
Last scan

Autonomous System

ASN
AS Name
AS Type
RIR
RIPE NCC
Allocated
2004-10-19
Allocation status
Allocated

Geolocation

Country
PL · Poland
Continent
Europe
Source
MaxMind GeoLite2

Reverse DNS

Last seen
2026-07-25 00:47:49

Network

RPKI

Open Ports

Port Proto Service Server Last seen
80 tcp http Apache/2.4.59 2026-05-26 14:14:51.000
443 tcp https Apache/2.4.59 2026-07-25 00:47:27.000
993 tcp imaps 2026-05-26 16:48:07.000

TLS Certificates

Port 443 fe70ebb0255e…
Subject: *.zetoprojekt.pl
Issuer: Certum DV TLS G2 R39 CA
SANs: *.zetoprojekt.pl, zetoprojekt.pl
Valid 2026-03-13 10:00:30 → 2026-09-28 10:00:29

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.

Hosted Domains

1 domain resolve (A-record) to this IP.

Multi-Vantage Check

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

ICMP responsive This IP replied to our global ICMP sweep — last confirmed 2026-08-03.

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 Cyberbezpieczny Samorząd Zeto Projekt - Strona główna 200
80 403 Forbidden 403

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.

zetoprojekt.pl 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.

www.google.pl href · ×2

History

First observed
2026-05-26 14:14
Last observed
2026-07-25 00:47
Scan observations
6

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