Check-Host.cc

IP Address IPv4

45.33.72.57

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

Run a live full scan of 45.33.72.57

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
AS63949
Linode AS63949
Country
US
United States
Reverse DNS
li1018-57.members.linode.com
PTR
Open Ports
2
Last scan

Autonomous System

ASN
AS Name
Linode AS63949
AS Type
RIR
APNIC
Allocated
2015-02-16
Allocation status
Allocated

Geolocation

Country
US · United States
Continent
North America
Source
MaxMind GeoLite2

Reverse DNS

Last seen
2026-07-20 12:10:19

Network

Prefix
RPKI

Open Ports

Port Proto Service Server Last seen
80 tcp http Apache/2.4.29 (Ubuntu) 2026-07-20 12:00:15.000
443 tcp https Apache/2.4.29 (Ubuntu) 2026-06-15 23:45:22.000

TLS Certificates

Port 443 a965edd2de3f…
Subject: btfny.com
Issuer: E7
SANs: btfny.com, btfny.org, www.btfny.com, www.btfny.org
Valid 2026-04-20 09:43:41 → 2026-07-19 09:43:40
Port 443 a965edd2de3f…
Subject: btfny.com
Issuer: E7
SANs: btfny.com, btfny.org, www.btfny.com, www.btfny.org
Valid 2026-04-20 09:43:41 → 2026-07-19 09:43:40

Known Vulnerabilities

Published CVEs matched to the software versions fingerprinted on this host. Matching is by product and version against the NVD dictionary — presence of a CVE does not confirm the host is exploitable (patches or backports may apply).

CVE Software CVSS Severity Summary
CVE-2018-1312 Apache 2.4.29 9.8 N/A In Apache httpd 2.2.0 to 2.4.29, when generating an HTTP Digest authentication challenge, the nonce sent to prevent reply attacks was not correctly generated us...
CVE-2017-15710 Apache 2.4.29 7.5 N/A In Apache httpd 2.0.23 to 2.0.65, 2.2.0 to 2.2.34, and 2.4.0 to 2.4.29, mod_authnz_ldap, if configured with AuthLDAPCharsetConfig, uses the Accept-Language head...
CVE-2018-17189 Apache 2.4.29 5.3 N/A In Apache HTTP server versions 2.4.37 and prior, by sending request bodies in a slow loris way to plain resources, the h2 stream for that request unnecessarily...

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.

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
80 301 Moved Permanently 301
443 Welcome to the BTF! 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.btfny.org DNS-confirmed
btfny.com DNS-confirmed
www.btfny.com 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.

www.shape5.com href · ×16
neatoday.org href · ×2
www.who.int href · ×2
www.cdc.gov href · ×2
mootools.net href · ×2
www.aft.org href · ×2
www.nysut.org href · ×2

History

First observed
2026-05-27 01:23
Last observed
2026-07-20 12:00
Scan observations
6

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