Check-Host.cc

IP Address IPv4

81.36.65.19

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

Run a live full scan of 81.36.65.19

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
AS3352
Telefonica de España
Country
ES
Spain
Reverse DNS
19.red-81-36-65.dynamicip.rima-tde.net
PTR
Open Ports
Last scan

Autonomous System

ASN
AS Name
Telefonica de España
AS Type
RIR
RIPE NCC
Allocated
1995-05-31
Allocation status
Allocated

Geolocation

Country
ES · Spain
Continent
Europe
Source
MaxMind GeoLite2

Reverse DNS

Last seen
2026-05-27 12:09:40

Network

Prefix
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

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
80 Libre como en libertad 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.

www.finaprosadigital.com DNS-confirmed
finaprosadigital.com 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.syntopikon.com href · ×2
www.emacswiki.org href · ×2
gitlab.com href · ×1
i.creativecommons.org href · ×1
sive.rs href · ×1
github.com href · ×1

History

Historical change-log pending

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