SSL Checker
Inspect the leaf certificate, issuer, validity window, SANs and expiry for an HTTPS host.
Enter a value above and run the check to see results here.
How it works
Inspect the leaf certificate, issuer, validity window, SANs and expiry for an HTTPS host.
Frequently asked questions
Is the SSL Checker tool free to use?+
Yes. The SSL Checker runs directly in NetInsight with no signup required. Free-tier usage is rate limited to keep the service fast for everyone.
Are my queries logged?+
Diagnostic inputs are processed to produce your result and are not sold or shared. See our Privacy Policy for full detail on retention.
How accurate are the SSL Checker results?+
Results are fetched live from authoritative sources each time you run a check, so they reflect the current state rather than a cached snapshot.