CT Log Check ​

With the CT Log Check Tool the Certificate Transparency Log can be searched for any name. The entries entries found correspond to an issued certificate of a well-known Certificate Authority. The data is provided by https://crt.sh. Note that not every issued certificate is written to the Certificate Transparency Log. in the Certificate Transparency Log, as there is the option to disable this when ordering.

The search is done by a LIKE search. For example, if you search for "domain", entries such as "www.domain.com" or "subdomain.domain.net" will be found.

The entries in the list overview, give a short overview of the name of the certificate (CN), the issuing organization (O), and the maximum validity (notAfter) of the certificate.

For each entry the data of the certificate can be viewed and the certificate can be copied as PEM.