Check-Host.cc

IP Address IPv4

192.189.3.203

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

Run a live full scan of 192.189.3.203

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
Not yet attributed
Country
US
United States
Reverse DNS
PTR
Open Ports
Last scan

Autonomous System

ASN
AS Name
AS Type
RIR
ARIN
Allocated
1992-06-17
Allocation status
Allocated

Geolocation

Country
US · United States
Continent
North America
Source
MaxMind GeoLite2

Reverse DNS

PTR
Last seen

Network

Prefix
RPKI

Open Ports

Port-scan data not yet ingested

Open-port and banner-grab data from our scan layer will appear here. World-sweep covers all IPv4 over time — this host may be in a /8 we haven't reached yet.

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.

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.

www.manchester.edu href · ×24
eawag-bbd.ethz.ch href · ×9
www.sciencedirect.com href · ×5
www.sigmaaldrich.com href · ×3
cdn.rcsb.org href · ×3
www.ncbi.nlm.nih.gov href · ×2
jgi.doe.gov href · ×2
www.realclimate.org href · ×2
www.ucsusa.org href · ×2
maproxy.palni.edu href · ×2
scifinder.cas.org href · ×2
outlook.office365.com href · ×2
search.proquest.com href · ×2
alphafold.com href · ×1
www.pnas.org href · ×1
envipath.org href · ×1
www.acdlabs.com href · ×1
www.pharmgkb.org href · ×1
www.rxgenomix.com href · ×1
aip.scitation.org href · ×1
www.image-maps.com href · ×1
www.envipath.org href · ×1
pymol.org href · ×1
aem.asm.org href · ×1
www.mendeley.com href · ×1
xenetwork.org href · ×1
www.acs.org href · ×1
nanome.ai href · ×1
nextstrain.org href · ×1
genomicseducation.net href · ×1
umbbd.ethz.ch href · ×1
esmatlas.com href · ×1
folding.stanford.edu href · ×1
www.pcrest2.com href · ×1
cpicpgx.org href · ×1
pogil.org href · ×1
www.srectrade.com href · ×1
inchwa.org href · ×1
blogs.sciencemag.org href · ×1
pubs.acs.org href · ×1
forms.manchester.edu href · ×1
www.genome.jp href · ×1
fold.it href · ×1
epi.grants.cancer.gov href · ×1
www.cochrane.org href · ×1
commonchemistry.org href · ×1
molviewer.com href · ×1
vaclavsmil.com href · ×1
www.russellgold.net href · ×1
www.npr.org href · ×1
spdbv.vital-it.ch href · ×1
osmand.net href · ×1
phys.org href · ×1
notepad-plus-plus.org href · ×1
pdb101.rcsb.org href · ×1

History

First observed
2026-07-24 13:44
Last observed
2026-07-24 13:44
Scan observations
2

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