Check-Host.cc

IP adresa IPv4

81.91.92.78

Agregirano iz javnih BGP feedova, CT logova, našeg sloja skeniranja, honeypota i globalnih proba.

Run a live full scan of 81.91.92.78

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
AS39790
WEB4U
Država
CZ
Czechia
Reverse DNS
vs971.server4u.cz
PTR
Open Ports
5
Last scan

Autonomni sistem

ASN
Naziv AS-a
WEB4U
Tip AS-a
RIR
RIPE NCC
Dodeljeno
2006-04-25
Allocation status
Allocated

Geolokacija

Država
CZ · Czechia
Kontinent
Europe
Source
MaxMind GeoLite2

Reverse DNS

Last seen
2026-07-20 17:53:48

Mreža

Prefix
RPKI

Otvoreni portovi

Port Proto Service Server Last seen
25 tcp smtp 2026-07-20 17:52:51.000
80 tcp http Apache/2.2.22 (Debian) 2026-05-26 14:52:22.000
587 tcp smtp-submission 2026-06-22 03:19:52.000
993 tcp imaps 2026-06-19 09:18:04.000
995 tcp pop3s 2026-05-27 00:41:18.000

TLS sertifikati

TLS certificate observations pending

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

Known Vulnerabilities

Published CVEs matched to the software versions fingerprinted on this host. Matching is by product and version against the NVD dictionary — presence of a CVE does not confirm the host is exploitable (patches or backports may apply).

CVE Software CVSS Severity Summary
CVE-2017-3169 Apache 2.2.22 9.8 N/A In Apache httpd 2.2.x before 2.2.33 and 2.4.x before 2.4.26, mod_ssl may dereference a NULL pointer when third-party modules call ap_hook_process_connection() d...
CVE-2016-4975 Apache 2.2.22 6.1 N/A Possible CRLF injection allowing HTTP response splitting attacks for sites which use mod_userdir. This issue was mitigated by changes made in 2.4.25 and 2.2.32...
CVE-2013-5704 Apache 2.2.22 5.0 MEDIUM The mod_headers module in the Apache HTTP Server 2.2.22 allows remote attackers to bypass "RequestHeader unset" directives by placing a header in the trailer po...
CVE-2012-3499 Apache 2.2.22 4.3 MEDIUM Multiple cross-site scripting (XSS) vulnerabilities in the Apache HTTP Server 2.2.x before 2.2.24-dev and 2.4.x before 2.4.4 allow remote attackers to inject ar...
CVE-2012-4558 Apache 2.2.22 4.3 MEDIUM Multiple cross-site scripting (XSS) vulnerabilities in the balancer_handler function in the manager interface in mod_proxy_balancer.c in the mod_proxy_balancer...
CVE-2012-2687 Apache 2.2.22 2.6 LOW Multiple cross-site scripting (XSS) vulnerabilities in the make_variant_list function in mod_negotiation.c in the mod_negotiation module in the Apache HTTP Serv...

Tehnološki stek

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

Kada je hostname serviran iza CDN-a (npr. Cloudflare), origin server se ponekad može identifikovati podudaranjem TLS sertifikata sa zaštićenim hostname-om. Nalazi prikazani ovde su heuristički kandidati, a ne garancija.

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

2 domains resolve (A-record) to this IP.

Provera sa više tačaka

Dostupnost prikupljena pasivno iz stvarnih korisničkih provera sa naših 65+ probnih lokacija. Pokrenite proveru uživo da dodate sveže podatke.

ICMP responsive This IP replied to our global ICMP sweep — last confirmed 2026-07-30.

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.

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

No DNS-confirmed domains yet

We cross-reference body-cited domains against our DNS resolver records. Confirmations appear here once both sides have data for the same name.

External References

No external references found yet

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

Istorija

Historical change-log pending

ASN changes, prefix re-allocations, cert rotations, port-state diffs over months — accumulates as our archives grow.