2012-01-06 2014-03-03 Unassigned 0x00000000 - 0x000003FF IETF Review 0x00000400 - 0xFFFFF3FF Specification Required 0x00000000 Channel Binding MIC Extension for the verifier of the channel bindings 0x00000001 - 0xFFFFF3FF Unassigned 0xFFFFF400 - 0xFFFFFFFF Reserved for Private Use Expert Review Sam Hartman 00 00 - 00 FF Unassigned 01 00 KRB_AP_REQ RFC4121, Section 4.1 01 01 MIC 01 02 Context deletion 01 03 - 01 FF Unassigned 02 00 KRB_AP_REP RFC4121, Section 4.1 02 01 Wrap 02 02 - 02 FF Unassigned 03 00 KRB_ERROR RFC4121, Section 4.1 03 01 - 04 00 Unassigned 04 01 exported name tokens 04 02 exported composite name tokens 04 03 Unassigned 04 04 MIC tokens RFC4121, Section 4.2.6.1 04 05 - 05 03 Unassigned 05 04 wrap tokens RFC4121, Section 4.2.6.2 05 05 - 06 00 Unassigned 06 01 GSS-EAP initiator context token RFC7055, Section 5 06 02 GSS-EAP acceptor context token RFC7055, Section 5 06 03 - 5F FF Unassigned 60 00 - 60 FF Reserved 61 00 - FF FF Unassigned