Toolbox

Free domain & network tools

Quick diagnostics for DNS, websites, email configuration and internet connections.

Check A, AAAA, MX, NS, CNAME and TXT records for any domain.

Compare DNS answers from Google, Cloudflare and Quad9 public resolvers.

Inspect a website certificate, expiry date, issuer and common SSL problems.

Find the mail servers responsible for receiving email for a domain.

Check response codes, redirects, final URLs and response times.

Inspect public registration data, registrar, status and important domain dates using RDAP.

See the public IP address your browser is using to reach this site.