Value,Description,Reference
0,Bundle Protocol Administrative Record,[RFC6260]
1,CCSDS File Delivery Service,[CCSDS 727.0-B-4]
2,Reserved,[RFC7116]
3-63,Unassigned,
64-1023,"Allocated to the Space Assigned Numbers Authority (SANA) 
for use by Consultative Committee for Space Data Systems (CCSDS) missions.",[RFC7116]
1024-65535,Unassigned,
>=65535,Reserved for Private or Experimental Use,[RFC7116]