Value,Description,Reference 0,Reserved,[RFC5291] 1-63,Unassigned, 64,Address Prefix ORF,[RFC5292] 65,CP-ORF,[RFC7543] 66,VPN Prefix ORF,[draft-ietf-idr-vpn-prefix-orf-06] 67-127,Unassigned, 128-255,Reserved for Vendor-Specific,[RFC5291]