TLS Certificate health checker

Oh Dear! can check if your HTTPS certificates are valid, trusted and have the correct certificate chain.

These same checks happen every 5 minutes to alert you of unwanted changes if you sign up for an Oh Dear! account.

Recent tests

The following websites have been tested recently. You can click through to view their results.

These tests are based on the actual checks Oh Dear! performs for its subscribers. On top of these health checks we can also notify you of changed SANs within your certificates to catch unwanted removal of domains that are covered by your HTTPS certificate.

Want to learn more about what Oh Dear! can do? Have a look at our feature set.