Check-Host.cc

IP Address IPv4

141.217.20.243

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

Run a live full scan of 141.217.20.243

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
AS237
Merit Network
Country
US
United States
Reverse DNS
dev.wdet.org
PTR
Open Ports
24
Last scan

Autonomous System

ASN
AS Name
Merit Network
AS Type
RIR
ARIN
Allocated
1988-09-12
Allocation status
Allocated

Geolocation

Country
US · United States
Continent
North America
Source
MaxMind GeoLite2

Reverse DNS

Last seen
2026-07-28 17:28:19

Network

RPKI

Open Ports

Port Proto Service Server Last seen
19 tcp 2026-07-25 11:44:11.000
67 tcp dhcp-server 2026-07-18 06:15:26.000
443 tcp https nginx/1.20.1 2026-07-28 11:24:41.000
445 tcp smb 2026-07-17 18:37:02.000
554 tcp 2026-07-20 01:28:00.000
561 tcp 2026-07-25 14:02:46.000
593 tcp 2026-07-25 05:39:21.000
700 tcp 2026-07-23 04:56:01.000
953 tcp 2026-07-28 17:27:49.000
993 tcp imaps 2026-05-26 16:57:31.000
1863 tcp 2026-07-28 08:41:17.000
5005 tcp 2026-07-21 22:11:12.000
5666 tcp 2026-07-27 22:35:55.000
5900 tcp vnc 2026-07-18 03:02:00.000
6663 tcp 2026-07-26 12:33:42.000
7000 tcp 2026-07-19 18:45:26.000
8086 tcp influxdb 2026-07-28 13:31:08.000
8880 tcp 2026-07-24 09:16:39.000
8888 tcp http-alt 2026-07-20 07:37:00.000
14443 tcp 2026-07-24 16:26:11.000
19000 tcp 2026-07-28 00:20:28.000
22222 tcp 2026-07-28 00:47:10.000
27017 tcp mongodb 2026-07-21 09:16:23.000
33060 tcp 2026-07-21 05:20:31.000

TLS Certificates

Port 443 c3c055d9e83f…
Subject: *.wdet.org
Issuer: InCommon RSA OV SSL CA 3
SANs: *.wdet.org, wdet.org
Valid 2026-07-10 00:00:00 → 2027-01-24 23:59:59

Tech Stack

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.

Hosted Domains

1 domain resolve (A-record) to this IP.

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
443 WDET 101.9 FM - Detroit Public Radio 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.

dev.wdet.org DNS-confirmed
dev.wdet.org DNS-confirmed
dev.wdet.org 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.

cloud.typography.com href · ×1
github.com href · ×1
gmpg.org href · ×1
api.w.org href · ×1
yoast.com href · ×1

History

First observed
2026-05-26 16:57
Last observed
2026-07-28 17:27
Scan observations
39

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