Tools · Email
Blacklist checker
Query an IP or domain against 30+ DNSBLs (Spamhaus, SpamCop, Barracuda…) in parallel.
Queries 30 DNSBL zones (Spamhaus, SpamCop, Barracuda, SORBS, …) in parallel. Each is a DNS lookup against the reversed IP.
The link encodes your inputs in the URL fragment. Nothing is uploaded.