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.

dns

dotbunker

Email Security Analyzer

One report on everything that protects a domain's mail: SPF, DKIM, DMARC, MX, MTA-STS, TLS-RPT, DANE and BIMI, scored and explained.
sync_alt

Runs in your browser and on our edge servers

DNS questions go from your browser to public resolvers; HTTP checks go through a dotbunker edge server. Nothing is stored.

Data sources

DNS over HTTPS · Cloudflare · Google · HTTP · dotbunker edge