Professional DNS tools, free

The same tools we use every day, available to everyone, also through an API.

Owner, expiry and availability of any domain, new extensions included.

Full analysis: records, email, subdomains, AXFR and reverse lookup.

Check DNS propagation on the public resolvers of 111 countries.

World map of public DNS servers and their response time.

Check whether an IP or mail server is listed on any of 79 blacklists.

The NS, A, MX and TXT records of a domain at a glance.

Check TLS/SSL certificate and chain (web and mail).

Mail health: SPF, DKIM, DMARC, reputation and open relay test.

Every tool in JSON, ready for your scripts.

Nerd break: the retro arcade classics, inside 3Load.