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Revoked Certificates List
The Certificates Revoked List (CRL) may be downloaded from the following link. This CRL includes the serial numbers of all of the certificates that have been revoked. It has an expiry of 1 week and is updated each time a certificate is revoked:
In addition, a List of Revoked Certification Authorities is published. This CRL has an expiry of 6 months. The revocation of a Certification Authority is a very special case and hence this CRL is only updated in exceptional circumstances.