Check-Host.cc

IP Address IPv4

168.183.3.99

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

Run a live full scan of 168.183.3.99

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
AS13335
Cloudflare
Country
US
United States
Reverse DNS
PTR
Open Ports
52
Last scan

Autonomous System

ASN
AS Name
Cloudflare
AS Type
RIR
ARIN
Allocated
2010-07-14
Allocation status
Allocated

Geolocation

Country
US · United States
Continent
North America
Source
MaxMind GeoLite2

Reverse DNS

PTR
Last seen

Network

RPKI

Open Ports

Port Proto Service Server Last seen
21 tcp ftp 2026-05-27 04:50:49.000
23 tcp telnet 2026-06-23 15:35:35.000
53 tcp dns 2026-05-26 02:14:00.000
80 tcp http 2026-05-27 05:03:13.000
88 tcp kerberos 2026-07-16 10:44:22.000
143 tcp imap 2026-06-20 03:18:19.000
401 tcp 2026-06-18 11:03:13.000
443 tcp https 2026-05-26 07:26:53.000
465 tcp smtps 2026-06-16 19:35:33.000
561 tcp 2026-07-19 01:55:05.000
691 tcp 2026-07-19 10:09:13.000
711 tcp 2026-06-21 01:09:37.000
712 tcp 2026-07-22 10:22:48.000
995 tcp pop3s 2026-05-26 09:47:54.000
1433 tcp mssql 2026-06-18 21:41:42.000
1434 tcp 2026-06-21 04:35:40.000
1604 tcp 2026-06-19 23:47:35.000
1755 tcp 2026-07-19 14:47:46.000
2049 tcp nfs 2026-06-21 18:46:59.000
2967 tcp 2026-06-19 03:07:37.000
3128 tcp 2026-06-18 02:03:57.000
3457 tcp 2026-06-16 15:15:32.000
3702 tcp 2026-06-15 03:34:35.000
4045 tcp 2026-07-22 00:04:59.000
4664 tcp 2026-07-20 04:17:35.000
5000 tcp 2026-06-23 04:04:01.000
5007 tcp 2026-06-16 05:09:00.000
5631 tcp 2026-06-17 15:02:41.000
5985 tcp winrm-http 2026-06-14 09:10:31.000
6001 tcp 2026-06-21 00:45:10.000
6443 tcp kubernetes 2026-07-20 19:39:19.000
6662 tcp 2026-06-15 19:27:28.000
7001 tcp 2026-06-22 08:07:53.000
7070 tcp 2026-06-17 20:07:35.000
8000 tcp http-alt 2026-07-16 03:05:06.000
8010 tcp 2026-07-16 22:29:27.000
8883 tcp 2026-06-17 23:54:29.000
9001 tcp 2026-07-19 00:05:43.000
9043 tcp 2026-06-13 22:54:01.000
9090 tcp 2026-06-16 07:20:30.000
9500 tcp 2026-06-20 08:30:40.000
10255 tcp 2026-06-16 05:49:04.000
10911 tcp 2026-06-18 19:56:43.000
11211 tcp memcached 2026-06-22 23:51:51.000
17000 tcp 2026-06-06 08:30:34.000
20000 tcp 2026-06-22 00:59:34.000
28017 tcp 2026-07-18 16:53:20.000
32768 tcp 2026-05-31 07:38:56.000
50000 tcp 2026-07-18 07:33:50.000
50070 tcp hadoop-namenode 2026-07-16 19:16:28.000
60000 tcp 2026-06-19 03:15:22.000
62078 tcp 2026-06-21 02:59:20.000

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.

ICMP responsive This IP replied to our global ICMP sweep — last confirmed 2026-07-22.

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.

History

First observed
2026-05-26 02:13
Last observed
2026-07-22 10:22
Scan observations
110

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