Toolbox

Free domain & network tools

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

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

Check DNS propagation from live probes in multiple countries and view results on a world map.

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

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

Check SPF, DMARC, DKIM and MX settings used to authenticate domain email.

Run DNS, email, SSL and HTTPS health checks from one dashboard.

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.