Free DNS Tools

Helpful tools to analyze DNS, discover dependencies, and understand your web infrastructure

Domain Dependency Mapper

Scan any webpage to discover all third-party dependencies including scripts, stylesheets, fonts, and more.

See which DNS resolvers actually answer your lookups. Reveal VPN and encrypted-DNS leaks, interception, and misconfigured clients.

Explore our free DNS education library to understand how DNS works, from fundamentals to advanced topics.