Check-Host.cc

Top-Level Domain

.observer

Aggregated statistics for the top-level domain

Apex domains
1,315
we've enumerated
Subdomains seen
3,354
CT + DNS + brute
TLS certs
naming .observer
Hosting ASNs
distinct origins

Threat Patterns

Malware / phishing ratio pending

How frequently .observer domains appear in URLhaus, OpenPhish, Spamhaus DBL — surfaces once the threat-intel matcher is live.