Check-Host.cc

IP Address IPv4

64.90.53.59

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

Run a live full scan of 64.90.53.59

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
AS26347
DreamHost
Country
US
United States
Reverse DNS
ruina.org
PTR
Open Ports
3
Last scan

Autonomous System

ASN
AS Name
DreamHost
AS Type
RIR
ARIN
Allocated
2002-08-28
Allocation status
Allocated

Geolocation

Country
US · United States
Continent
North America
Source
MaxMind GeoLite2

Reverse DNS

PTR
Last seen
2026-07-22 03:58:19

Network

Prefix
RPKI

Open Ports

Port Proto Service Server Last seen
21 tcp ftp 2026-07-21 15:39:15.000
80 tcp http Apache 2026-06-07 10:01:13.000
9090 tcp 2026-07-22 03:57:19.000

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.

Hosted Domains

2 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.

ICMP responsive This IP replied to our global ICMP sweep — last confirmed 2026-08-05.

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
80 Andy Ruina home 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.

ruina.tam.cornell.edu DNS-confirmed
ruina.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.

piazza.com href · ×3
docs.google.com href · ×3
bicycle.tudelft.nl href · ×2
www.cs.cornell.edu href · ×1
scholar.google.com href · ×1
tinyurl.com href · ×1
www.mae.cornell.edu href · ×1
canvas.cornell.edu href · ×1
drive.google.com href · ×1
cornell.zoom.us href · ×1
sites.google.com href · ×1

History

First observed
2026-06-07 10:01
Last observed
2026-07-22 03:57
Scan observations
6

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