Check-Host.cc

Domain

tools.pdf24.org

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

Run a live full scan of tools.pdf24.org

On-demand: ports, banners, TLS, tech-stack, subdomains and origin/IP-leak detection. Results are shared publicly for everyone to link to.

Deep-scan now
Hosting IPs
6
A/AAAA targets
Subdomains
CT + scan + body
Record Types
2
seen in DNS
Observed Certs
in our scans

DNS Records

A
104.26.2.31, 104.26.3.31, 172.67.74.46
AAAA
2606:4700:20::681a:21f, 2606:4700:20::681a:31f, 2606:4700:20::ac43:4a2e
MX
NS
TXT
CNAME
CAA

WHOIS / Registration

Registration data planned

Registrar, creation/expiry dates and domain status via RDAP. Rolling out gradually — bulk WHOIS is rate-limited, so we resolve on a prioritized cadence.

Subdomains

Subdomain enumeration pending

Every subdomain ever issued a TLS cert under this apex — extracted from Certificate Transparency logs, our own scan observations and body references.

Tech Stack

Tech detection pending

Wappalyzer-rules detect CMS, frameworks, analytics, JS libs and server-side languages on this domain.

TLS Certificates

Certificate observations pending

TLS certs naming this domain in subject or SANs will appear here as our scan-layer catches them.

IPs Citing This Domain

Hosts whose HTML body references this domain. Strong signal for origin/mirror/embed discovery.

138.2.224.254:443 href · ×4
84.235.246.160:443 href · ×3
140.245.59.16:443 href · ×3
106.54.61.21:80 href · ×2
124.221.50.138:80 href · ×2
122.152.237.247:80 href · ×2
154.219.100.133:443 href · ×2
101.34.68.221:443 href · ×2
124.220.82.138:80 href · ×2
8.137.58.94:443 href · ×2
88.146.116.74:443 href · ×1
101.33.199.134:443 href · ×1
43.143.128.135:5000 href · ×1
120.55.190.15:443 href · ×1
106.53.21.71:443 href · ×1
59.110.173.112:80 href · ×1
195.201.227.97:443 href · ×1
8.140.184.12:443 href · ×1
154.37.219.18:443 href · ×1
110.42.59.229:443 href · ×1
67.216.194.210:443 href · ×1
8.156.71.132:443 href · ×1
159.54.191.207:443 href · ×1
43.138.243.91:80 href · ×1
152.69.213.202:443 href · ×1
122.51.92.94:80 href · ×1
124.222.144.136:443 href · ×1
117.72.51.60:443 href · ×1
8.137.58.94:80 href · ×1

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-IP leaks detected (yet)

Either this domain doesn't sit behind a CDN, or we haven't seen a TLS cert from a non-CDN IP matching this hostname. Run a fullscan to refresh the cert→IP cross-reference.

Threat Intelligence

Domain threat-intel pending

Matches in URLhaus, OpenPhish, PhishTank, malware feeds, and Spamhaus DBL.

History

Passive DNS — every value this name ever resolved to and when we first / last observed it. Updates every cycle of our forward-DNS crawler.

Type Value First seen Last seen
A 104.26.3.31 2026-05-25 22:07:29.493 2026-07-27 18:59:24.775
A 172.67.74.46 2026-05-25 22:07:29.493 2026-07-27 18:59:24.775
AAAA 2606:4700:20::681a:21f 2026-05-25 22:07:29.493 2026-07-27 18:59:24.775
AAAA 2606:4700:20::ac43:4a2e 2026-05-25 22:07:29.493 2026-07-27 18:59:24.775
AAAA 2606:4700:20::681a:31f 2026-05-25 22:07:29.493 2026-07-27 18:59:24.775
A 104.26.2.31 2026-05-25 22:07:29.493 2026-07-27 18:59:24.775