IMS-AKA session agent counters are available from apSecuritySAIMSAKAStats. The OID prefix is 1.3.6.1.4.1.9148.3.9.5.2 which is found in the ap-security.mib file.

The apSecuritySAIMSAKAStats contains numerous IMS-AKA session agent statistics and corresponds to the show sa stats ims-aka all command and sa-imsaka HDR group.