Check-Host.cc

IP Address IPv4

84.21.18.34

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

Run a live full scan of 84.21.18.34

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
AS29278
Rackhost
Country
HU
Hungary
Reverse DNS
mail.carusseldwt.com
PTR
Open Ports
7
Last scan

Autonomous System

ASN
AS Name
Rackhost
AS Type
RIR
RIPE NCC
Allocated
2003-07-18
Allocation status
Allocated

Geolocation

Country
HU · Hungary
Continent
Europe
Source
MaxMind GeoLite2

Reverse DNS

Last seen
2026-08-03 00:14:49

Network

Prefix
RPKI

Open Ports

Port Proto Service Server Last seen
7 tcp 2026-07-18 23:07:16.000
25 tcp smtp 2026-06-20 13:28:02.000
110 tcp pop3 2026-05-26 21:02:19.000
443 tcp https Apache 2026-05-26 22:19:46.000
465 tcp smtps 2026-06-17 11:12:33.000
993 tcp imaps 2026-06-17 18:30:29.000
6000 tcp 2026-07-27 13:38:21.000

TLS Certificates

Port 443 6aa395971235…
Subject: autodiscover.mail.carusseldwt.com
Issuer: R12
SANs: autodiscover.mail.carusseldwt.com
Valid 2026-04-02 00:03:51 → 2026-07-01 00:03:50

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.

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.

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.

schemas.microsoft.com href · ×2

History

First observed
2026-05-26 21:02
Last observed
2026-07-27 13:38
Scan observations
22

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