Check-Host.cc

IP Address IPv4

203.250.218.72

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

Run a live full scan of 203.250.218.72

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
AS1237
KREONET
Country
KR
South Korea
Reverse DNS
PTR
Open Ports
1
Last scan

Autonomous System

ASN
AS Name
KREONET
AS Type
RIR
APNIC
Allocated
2002-08-01

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
443 tcp https 2026-07-26 13:02:17.000

TLS Certificates

Port 443 a5f388b6b80a…
Subject: *.kisti.re.kr
Issuer: Thawte TLS RSA CA G1
SANs: *.kisti.re.kr, kisti.re.kr
Valid 2025-11-14 00:00:00 → 2026-12-09 23:59:59

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.

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 KISTI BIDDING SYSTEM 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.

ebid.kisti.re.kr DNS-confirmed

External References

No external references found yet

As HTML bodies get banner-grabbed, references to external domains land here.

History

First observed
2026-07-26 13:02
Last observed
2026-07-26 13:02
Scan observations
2

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