Understand your connection
Website tools
Useful website checks. No account, no cookies. Inspect DNS, TLS certificates and redirects.
01
Website diagnosis
One address. DNS, certificate, TLS and HTTP results in one report.
Open tool →02SSL / TLS check
Inspect certificate validity, hostname, chain, TLS versions and confirmed cipher suites.
Open tool →03Redirect check
Follow a website address through every redirect, with HTTP codes and connection timings.
Open tool →04DNS check
Look up network addresses, aliases, mail servers, nameservers and TXT records. Compare public DNS resolvers.
Open tool →Checks run on demand from our server. Submitted addresses and diagnostic reports are not saved. Public page analytics are described in our privacy notice.