SubType,Description,Reference
0,Reserved,
1,IPV4_ADDRESS,[RFC3520]
2,IPV6_ADDRESS,[RFC3520]
3,FQDN,[RFC3520]
4,ASCII_DN,[RFC3520]
5,UNICODE_DN,[RFC3520]
6,URI,[RFC3520]
7,KRB_PRINCIPAL,[RFC3520]
8,X509_V3_CERT,[RFC3520]
9,PGP_CERT,[RFC3520]
10-127,Unassigned,
128-255,Reserved,