Check-Host.cc

IP Address IPv4

91.219.148.4

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

Run a live full scan of 91.219.148.4

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
Not yet attributed
Country
GeoIP pending
Reverse DNS
proxymsk.lfl.ru
PTR
Open Ports
1
Last scan

Autonomous System

ASN
AS Name
AS Type
RIR
RIPE NCC
Allocated
2010-10-13
Allocation status
Assigned

Geolocation

Country
Continent
Source
MaxMind GeoLite2

Reverse DNS

Last seen
2026-07-20 00:37:19

Network

Prefix
RPKI

Open Ports

Port Proto Service Server Last seen
443 tcp https nginx/1.28.3 (Ubuntu) 2026-07-18 09:22:10.000

TLS Certificates

Port 443 368f9372e067…
Subject: *.lfl.ru
Issuer: GlobalSign GCC R6 AlphaSSL CA 2025
SANs: *.lfl.ru, lfl.ru
Valid 2026-01-07 14:42:54 → 2027-02-08 14:42:53

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.

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.

lfl.ru 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.

forum.lfl.ru href · ×446
vk.com href · ×45
www.gravatar.com href · ×16
lfkkort.ru href · ×3
t.me href · ×2
itunes.apple.com href · ×2
mychamp.ru href · ×2
www.amazon.com href · ×1
forum.lfl.ru canonical · ×1

History

Historical change-log pending

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