Website tools

Look up DNS records, SSL certificates, WHOIS and domain age, check HTTP status, uptime, IP address and security headers.

A, AAAA, MX, TXT, NS, CNAME and more.

Certificate issuer, expiry and HTTPS status.

Registrar, dates and nameservers of a domain.

How old is a domain?

Status codes and the full redirect chain.

Down for everyone or just you?

Your IP, or the IP of any website.

Grade a site's HTTP security headers.