| 407 | Remote Job Entry ProtocolR.D. Bressler, R. Guida, A.M. McKenzie | Historic | October 1972 |
| 441 | Inter-Entity Communication - an experimentR.D. Bressler, R. Thomas | Unknown | January 1973 |
| 530 | Report on the Survey ProjectA.K. Bhushan | Unknown | June 1973 |
| 734 | SUPDUP ProtocolM.R. Crispin | Historic | October 1977 |
| 740 | NETRJS ProtocolR.T. Braden | Historic | November 1977 |
| 741 | Specifications for the Network Voice Protocol (NVP)D. Cohen | Unknown | November 1977 |
| 742 | NAME/FINGER ProtocolK. Harrenstien · obsoleted by RFC 1194, RFC 1196, RFC 1288 | Unknown | December 1977 |
| 759 | Internet Message ProtocolJ. Postel | Historic | August 1980 |
| 765 | File Transfer Protocol specificationJ. Postel · obsoleted by RFC 959 | Unknown | June 1980 |
| 768 | User Datagram ProtocolJ. Postel | Internet Standard | August 1980 |
| 783 | TFTP Protocol (revision 2)K.R. Sollins · obsoleted by RFC 1350 | Unknown | June 1981 |
| 791 | Internet ProtocolJ. Postel | Internet Standard | September 1981 |
| 792 | Internet Control Message ProtocolJ. Postel | Internet Standard | September 1981 |
| 793 | Transmission Control ProtocolJ. Postel · obsoleted by RFC 9293 | Internet Standard | September 1981 |
| 811 | Hostnames ServerK. Harrenstien, V. White, E.J. Feinler · obsoleted by RFC 953 | Unknown | March 1982 |
| 812 | NICNAME/WHOISK. Harrenstien, V. White · obsoleted by RFC 954, RFC 3912 | Unknown | March 1982 |
| 818 | Remote User Telnet serviceJ. Postel | Historic | November 1982 |
| 821 | Simple Mail Transfer ProtocolJ. Postel · obsoleted by RFC 2821 | Internet Standard | August 1982 |
| 823 | DARPA Internet gatewayR.M. Hinden, A. Sheltzer | Historic | September 1982 |
| 824 | CRONUS Virtual Local NetworkW.I. MacGregor, D.C. Tappan | Unknown | August 1982 |
| 826 | An Ethernet Address Resolution Protocol: Or Converting Network Protocol Addresses to 48.bit Ethernet Address for Transmission on Ethernet HardwareD. Plummer | Internet Standard | November 1982 |
| 827 | Exterior Gateway Protocol (EGP)E.C. Rosen | Unknown | October 1982 |
| 854 | Telnet Protocol SpecificationJ. Postel, J.K. Reynolds | Internet Standard | May 1983 |
| 862 | Echo ProtocolJ. Postel | Internet Standard | May 1983 |
| 863 | Discard ProtocolJ. Postel | Internet Standard | May 1983 |
| 864 | Character Generator ProtocolJ. Postel | Internet Standard | May 1983 |
| 865 | Quote of the Day ProtocolJ. Postel | Internet Standard | May 1983 |
| 866 | Active usersJ. Postel | Internet Standard | May 1983 |
| 867 | Daytime ProtocolJ. Postel | Internet Standard | May 1983 |
| 868 | Time ProtocolJ. Postel, K. Harrenstien | Internet Standard | May 1983 |
| 877 | Standard for the transmission of IP datagrams over public data networksJ.T. Korb · obsoleted by RFC 1356 | Unknown | September 1983 |
| 880 | Official protocolsJ.K. Reynolds, J. Postel · obsoleted by RFC 901 | Historic | October 1983 |