SSL Certificate Check

Check an SSL/TLS certificate: expiry date, issuer, covered names, chain and protocol. Free SSL checker from Total Group.

Free tools from Total Group, IT support, cyber security and compliance for regulated businesses. Lookups run on our own servers; nothing you enter is stored or shared. Need help fixing what a check found? Talk to us.

Frequently asked questions

What does an SSL certificate check show?

It shows who issued the certificate, when it expires, which names it covers and whether the full certificate chain is served correctly. An expired or mismatched certificate triggers browser warnings and can stop email and APIs working.