Check-Host.cc

IP Address IPv4

27.101.238.17

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

Run a live full scan of 27.101.238.17

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
AS17841
Click for details
Country
KR
South Korea
Reverse DNS
PTR
Open Ports
12
Last scan

Autonomous System

ASN
AS Name
AS Type
RIR
APNIC
Allocated
2010-05-25
Allocation status
Allocated

Geolocation

Country
KR · South Korea
Continent
Asia
Source
MaxMind GeoLite2

Reverse DNS

PTR
Last seen

Network

RPKI

Open Ports

Port Proto Service Server Last seen
23 tcp telnet 2026-05-26 21:05:25.000
70 tcp 2026-06-15 05:32:19.000
109 tcp 2026-06-14 08:16:25.000
443 tcp https Apache 2026-06-21 06:39:15.000
902 tcp 2026-06-14 14:43:12.000
6379 tcp redis 2026-06-06 13:19:00.000
8080 tcp http-proxy 2026-05-26 03:17:54.000
8443 tcp https-alt 2026-05-26 18:34:05.000
8834 tcp 2026-05-31 12:06:36.000
9000 tcp php-fpm 2026-06-07 04:52:53.000
49152 tcp 2026-06-15 01:31:15.000
49154 tcp 2026-05-31 04:27:05.000

TLS Certificates

Port 443 f4dc96ce514c…
Subject: *.moef.go.kr
Issuer: GlobalSign GCC R6 AlphaSSL CA 2025
SANs: *.moef.go.kr, moef.go.kr
Valid 2026-01-09 01:57:24 → 2027-02-10 01:57:23

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.

Hosted Domains

4 domains 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 재정경제부 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.mofe.go.kr DNS-confirmed
mofe.go.kr DNS-confirmed
www.moef.go.kr DNS-confirmed
www.mofe.go.kr DNS-confirmed
www.mofe.go.kr 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.

x.com href · ×6
blog.naver.com href · ×5
english.mofe.go.kr href · ×2
m.post.naver.com href · ×2
www.sinmungo.go.kr href · ×2
kids.mofe.go.kr href · ×2
kin.naver.com href · ×2
www.mybudget.go.kr href · ×2
naver.me href · ×2
www.open.go.kr href · ×2
www.better.go.kr href · ×2
ncp.clean.go.kr href · ×2
www.korea.kr href · ×1
www.mois.go.kr href · ×1
www.mpbvisionidea.kr href · ×1
www.law.go.kr href · ×1
www.president.go.kr href · ×1

History

First observed
2026-05-26 00:59
Last observed
2026-06-21 06:39
Scan observations
23

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