Value,ID Scheme,Reference
0,Reserved,[RFC6509]
1,tel URI with monthly keys,[RFC6509]
2,3GPP MCX hashed UID,"[3GPP TS 33.180, Sections E.1.2 and F.2.1][Tim_Woodward]"
3-239,Unassigned,
240-254,Reserved for Private Use,[RFC6509]
255,Reserved,[RFC6509]