DNS across resolvers

Ask four public resolvers the same question and see whether they agree. Useful for checking propagation after a record change.

Redirect chain

Follow a URL one hop at a time and see every status code, Location header and cache header on the way.

TLS versions and ciphers

Lists the TLS versions a server enables and every cipher suite it accepts, in the order it prefers them.

Takes 5–20 seconds. Sites served through Cloudflare can't be scanned yet.

Terminal

Run dig, curl and tls as commands. Type help for options.

Works from any terminal too: curl lookup.aquariit.com/help