DNS Blacklist Checker

lupaxa-dns-blacklist-checker looks up an IP address or hostname on DNS blacklists (DNSBLs). It reverses each address, queries each zone, and reports which zones listed it.

pip install lupaxa-dns-blacklist-checker
dns-blacklist-checker 192.0.2.1

dnsbl is an alias for dns-blacklist-checker. Both commands accept the same flags and print the same output.

A listed address names the zones that answered, with the return code and TXT reason when the zone provides them. A clear address prints that it is not blacklisted. Hostnames are checked on every IPv4 and IPv6 address they resolve to.

Next steps

• Getting started — install and first run
• Usage — output, CLI flags, and the library API
• Reference — defaults, exit codes, and API names
• Examples — common lookup recipes