CA/Browser Forum Deprecates use of Reserved IP Address or Internal Server Name
As of July 1, 2012 (Effective Date), the use of Certificates containing Reserved IP Address or Internal Server Name has been deprecated by the CA / Browser Forum and the practice will be eliminated by October 2016.
As of July 1, 2012, Comodo will not issue a certificate with an expiration date later than 1 November 2015 with a subjectAlternativeName (SAN) extension or Subject commonName (CN) field containing a Reserved IP Address or Internal Server Name.
Effective 1 October 2016, Comodo will revoke all unexpired certificates whose subjectAlternativeName extension or Subject commonName field contains a Reserved IP Address or Internal Server Name.
If you are using an internal top level domain (TLD) which is not currently a valid TLD), please be advised that should such TLD become recognized by IANA/ICANN as a valid TLD this certificate will be revoked without further notice. Prior to the certificate being reinstated you will need to demonstrate domain ownership/control.
See the InCommon website for more information.