The CAA record type
The CAA (certification authority authorisation) record type is used to limit the Certificate Authorities that are allowed to generate certificates for a given domain.
Here, we query for CAA records of the domain “
The result is a record with the tag “
issue”, the certificate authority “
some.certificate.authority”, and the critical flag not set.
$ dog CAA caa-example.lookup.dog CAA caa-example.lookup.dog. 1h00m00s "issue" "some.certificate.authority" (non-critical)