| 1138 | Mapping between X.400(1988) / ISO 10021 and RFC 822S.E. Kille · obsoleted by RFC 1327, RFC 2156 | Experimental | December 1989 |
| 1137 | Mapping between full RFC 822 and RFC 822 with restricted encodingS. Kille | Historic | December 1989 |
| 1136 | Administrative Domains and Routing Domains: A model for routing in the InternetS. Hares, D. Katz | Informational | December 1989 |
| 1135 | Helminthiasis of the InternetJ.K. Reynolds | Informational | December 1989 |
| 1134 | Point-to-Point Protocol: A proposal for multi-protocol transmission of datagrams over Point-to-Point linksD. Perkins · obsoleted by RFC 1171 | Proposed Standard | November 1989 |
| 1133 | Routing between the NSFNET and the DDNJ.Y. Yu, H.W. Braun | Informational | November 1989 |
| 1132 | Standard for the transmission of 802.2 packets over IPX networksL.J. McLaughlin | Internet Standard | November 1989 |
| 1125 | Policy requirements for inter Administrative Domain routingD. Estrin | Unknown | November 1989 |
| 1131 | OSPF specificationJ. Moy · obsoleted by RFC 1247 | Proposed Standard | October 1989 |
| 1130 | IAB official protocol standardsDefense Advanced Research Projects Agency, Internet Activities Board · obsoleted by RFC 1140 | Historic | October 1989 |
| 1129 | Internet Time Synchronization: The Network Time ProtocolD.L. Mills | Informational | October 1989 |
| 1128 | Measured performance of the Network Time Protocol in the Internet systemD.L. Mills | Unknown | October 1989 |
| 1127 | Perspective on the Host Requirements RFCsR.T. Braden | Informational | October 1989 |
| 1126 | Goals and functional requirements for inter-autonomous system routingM. Little | Unknown | October 1989 |
| 1123 | Requirements for Internet Hosts - Application and SupportR. Braden, Ed. | Internet Standard | October 1989 |
| 1122 | Requirements for Internet Hosts - Communication LayersR. Braden, Ed. | Internet Standard | October 1989 |
| 1124 | Policy issues in interconnecting networksB.M. Leiner | Unknown | September 1989 |
| 1121 | Act one - the poemsJ. Postel, L. Kleinrock, V.G. Cerf, B. Boehm | Informational | September 1989 |
| 1120 | Internet Activities BoardV. Cerf · obsoleted by RFC 1160 | Informational | September 1989 |
| 1119 | Network Time Protocol (version 2) specification and implementationD.L. Mills · obsoleted by RFC 1305 | Historic | September 1989 |
| 1118 | Hitchhikers guide to the InternetE. Krol | Informational | September 1989 |
| 1117 | Internet numbersS. Romano, M.K. Stahl, M. Recker · obsoleted by RFC 1166 | Informational | August 1989 |
| 1116 | Telnet Linemode optionD.A. Borman · obsoleted by RFC 1184 | Proposed Standard | August 1989 |
| 1115 | Privacy enhancement for Internet electronic mail: Part III - algorithms, modes, and identifiersJ. Linn · obsoleted by RFC 1423 | Historic | August 1989 |
| 1114 | Privacy enhancement for Internet electronic mail: Part II - certificate-based key managementS.T. Kent, J. Linn · obsoleted by RFC 1422 | Historic | August 1989 |
| 1113 | Privacy enhancement for Internet electronic mail: Part I - message encipherment and authentication proceduresJ. Linn · obsoleted by RFC 1421 | Historic | August 1989 |
| 1112 | Host extensions for IP multicastingS.E. Deering | Internet Standard | August 1989 |
| 1111 | Request for comments on Request for Comments: Instructions to RFC authorsJ. Postel · obsoleted by RFC 1543, RFC 2223 | Informational | August 1989 |
| 1110 | Problem with the TCP big window optionA.M. McKenzie · obsoleted by RFC 6247 | Historic | August 1989 |
| 1109 | Report of the second Ad Hoc Network Management Review GroupV.G. Cerf | Unknown | August 1989 |
| 1107 | Plan for Internet directory servicesK.R. Sollins | Informational | July 1989 |
| 1106 | TCP big window and NAK optionsR. Fox · obsoleted by RFC 6247 | Historic | June 1989 |
| 1105 | Border Gateway Protocol (BGP)K. Lougheed, Y. Rekhter · obsoleted by RFC 1163 | Experimental | June 1989 |
| 1104 | Models of policy based routingH.W. Braun | Unknown | June 1989 |
| 1103 | Proposed standard for the transmission of IP datagrams over FDDI NetworksD. Katz · obsoleted by RFC 1188 | Unknown | June 1989 |
| 1102 | Policy routing in Internet protocolsD.D. Clark | Unknown | May 1989 |
| 1097 | Telnet subliminal-message optionB. Miller | Unknown | 1 April 1989 |
| 1101 | DNS encoding of network names and other typesP. Mockapetris | Unknown | April 1989 |
| 1100 | IAB official protocol standardsDefense Advanced Research Projects Agency, Internet Activities Board · obsoleted by RFC 1130 | Historic | April 1989 |
| 1098 | Simple Network Management Protocol (SNMP)J.D. Case, M. Fedor, M.L. Schoffstall, J. Davin · obsoleted by RFC 1157 | Unknown | April 1989 |
| 1095 | Common Management Information Services and Protocol over TCP/IP (CMOT)U.S. Warrier, L. Besaw · obsoleted by RFC 1189 | Unknown | April 1989 |
| 1096 | Telnet X display location optionG.A. Marcy | Proposed Standard | March 1989 |
| 1094 | NFS: Network File System Protocol specificationB. Nowicki | Informational | March 1989 |
| 1093 | NSFNET routing architectureH.W. Braun | Unknown | February 1989 |
| 1092 | EGP and policy based routing in the new NSFNET backboneJ. Rekhter | Unknown | February 1989 |
| 1091 | Telnet terminal-type optionJ. VanBokkelen | Proposed Standard | February 1989 |
| 1090 | SMTP on X.25R. Ullmann | Unknown | February 1989 |
| 1089 | SNMP over EthernetM. Schoffstall, C. Davin, M. Fedor, J. Case · obsoleted by RFC 4789 | Unknown | February 1989 |
| 1088 | Standard for the transmission of IP datagrams over NetBIOS networksL.J. McLaughlin | Internet Standard | February 1989 |
| 1070 | Use of the Internet as a subnetwork for experimentation with the OSI network layerR.A. Hagens, N.E. Hall, M.T. Rose | Unknown | February 1989 |
| 1069 | Guidelines for the use of Internet-IP addresses in the ISO Connectionless-Mode Network ProtocolR. Callon, H.W. Braun | Unknown | February 1989 |
| 1087 | Ethics and the InternetDefense Advanced Research Projects Agency, Internet Activities Board | Unknown | January 1989 |