Development preview. dotbunker is still being built. Some of the data shown here, including registrar prices, is sample data and should not be relied on.

Blacklist Checker

Check an IP address or domain against the DNS-based blocklists mail servers consult, and see which ones list it.

devices

Runs in your browser

Your browser asks public resolvers and registries directly. The query never passes through dotbunker.

Data sources

DNSBL · DNS over HTTPS · Cloudflare · Google