| 347 | Echo processJ. Postel | Unknown | May 1972 |
| 348 | Discard ProcessJ. Postel | Unknown | May 1972 |
| 407 | Remote Job Entry ProtocolR.D. Bressler, R. Guida, A.M. McKenzie | Historic | October 1972 |
| 429 | Character Generator ProcessJ. Postel | Unknown | December 1972 |
| 643 | Network Debugging ProtocolE. Mader | Unknown | July 1974 |
| 678 | Standard file formatsJ. Postel | Unknown | December 1974 |
| 733 | Standard for the format of ARPA network text messagesD. Crocker, J. Vittal, K.T. Pogran, D.A. Henderson · obsoleted by RFC 822 | Unknown | November 1977 |
| 734 | SUPDUP ProtocolM.R. Crispin | Historic | October 1977 |
| 740 | NETRJS ProtocolR.T. Braden | Historic | November 1977 |
| 742 | NAME/FINGER ProtocolK. Harrenstien · obsoleted by RFC 1194, RFC 1196, RFC 1288 | Unknown | December 1977 |
| 753 | Internet Message ProtocolJ. Postel | Unknown | March 1979 |
| 764 | Telnet Protocol specificationJ. Postel · obsoleted by RFC 854 | Unknown | June 1980 |
| 765 | File Transfer Protocol specificationJ. Postel · obsoleted by RFC 959 | Unknown | June 1980 |
| 767 | Structured format for transmission of multi-media documentsJ. Postel | Unknown | August 1980 |
| 768 | User Datagram ProtocolJ. Postel | Internet Standard | August 1980 |
| 775 | Directory oriented FTP commandsD. Mankins, D. Franklin, A.D. Owen | Unknown | December 1980 |
| 778 | DCNET Internet Clock ServiceD.L. Mills | Historic | April 1981 |
| 783 | TFTP Protocol (revision 2)K.R. Sollins · obsoleted by RFC 1350 | Unknown | June 1981 |
| 788 | Simple Mail Transfer ProtocolJ. Postel · obsoleted by RFC 821 | Unknown | November 1981 |
| 790 | Assigned numbersJ. Postel · obsoleted by RFC 820 | Historic | September 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 |
| 794 | Pre-emptionV.G. Cerf | Informational | September 1981 |
| 795 | Service mappingsJ. Postel | Historic | September 1981 |
| 796 | Address mappingsJ. Postel | Historic | September 1981 |
| 810 | DoD Internet host table specificationE.J. Feinler, K. Harrenstien, Z. Su, V. White · obsoleted by RFC 952 | Unknown | March 1982 |
| 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 |
| 813 | Window and Acknowledgement Strategy in TCPD.D. Clark · obsoleted by RFC 7805 | Historic | July 1982 |
| 814 | Name, addresses, ports, and routesD.D. Clark | Informational | July 1982 |
| 815 | IP datagram reassembly algorithmsD.D. Clark | Unknown | July 1982 |
| 816 | Fault isolation and recoveryD.D. Clark · obsoleted by RFC 7805 | Historic | July 1982 |
| 817 | Modularity and efficiency in protocol implementationD.D. Clark | Informational | July 1982 |
| 818 | Remote User Telnet serviceJ. Postel | Historic | November 1982 |
| 820 | Assigned numbersJ. Postel · obsoleted by RFC 870 | Historic | August 1982 |
| 821 | Simple Mail Transfer ProtocolJ. Postel · obsoleted by RFC 2821 | Internet Standard | August 1982 |
| 822 | STANDARD FOR THE FORMAT OF ARPA INTERNET TEXT MESSAGESD. Crocker · obsoleted by RFC 2822 | Internet Standard | August 1982 |
| 823 | DARPA Internet gatewayR.M. Hinden, A. Sheltzer | Historic | September 1982 |
| 827 | Exterior Gateway Protocol (EGP)E.C. Rosen | Unknown | October 1982 |