// network · reputation · dnsbl

IP Blacklist
Checker.

Check any IPv4 address against 55 DNS blacklists in real-time. Spamhaus, SpamCop, Barracuda, SORBS, UCEPROTECT, DroneBL and more. All queries go directly from your browser to Cloudflare's DoH resolver — nothing is stored or logged here.

[ip]
invalid IPv4 address
55 blacklists DoH via Cloudflare no data stored