| 2600 | Internet Official Protocol StandardsJ. Reynolds, R. Braden · obsoleted by RFC 2700 | Historic | March 2000 |
| 2601 | ILMI-Based Server Discovery for ATMARPM. Davison | Proposed Standard | June 1999 |
| 2602 | ILMI-Based Server Discovery for MARSM. Davison | Proposed Standard | June 1999 |
| 2603 | ILMI-Based Server Discovery for NHRPM. Davison | Proposed Standard | June 1999 |
| 2604 | Wireless Device Configuration (OTASP/OTAPA) via ACAPR. Gellens · obsoleted by RFC 2636 | Informational | June 1999 |
| 2605 | Directory Server Monitoring MIBG. Mansfield, S. Kille | Proposed Standard | June 1999 |
| 2606 | Reserved Top Level DNS NamesD. Eastlake 3rd, A. Panitz | Best Current Practice | June 1999 |
| 2607 | Proxy Chaining and Policy Implementation in RoamingB. Aboba, J. Vollbrecht | Informational | June 1999 |
| 2608 | Service Location Protocol, Version 2E. Guttman, C. Perkins, J. Veizades, M. Day | Proposed Standard | June 1999 |
| 2609 | Service Templates and Service: SchemesE. Guttman, C. Perkins, J. Kempf | Proposed Standard | June 1999 |
| 2610 | DHCP Options for Service Location ProtocolC. Perkins, E. Guttman | Proposed Standard | June 1999 |
| 2611 | URN Namespace Definition MechanismsL. Daigle, D. van Gulik, R. Iannella, P. Faltstrom · obsoleted by RFC 3406 | Best Current Practice | June 1999 |
| 2612 | The CAST-256 Encryption AlgorithmC. Adams, J. Gilchrist | Informational | June 1999 |
| 2613 | Remote Network Monitoring MIB Extensions for Switched Networks Version 1.0R. Waterman, B. Lahaye, D. Romascanu, S. Waldbusser | Draft Standard | June 1999 |
| 2614 | An API for Service LocationJ. Kempf, E. Guttman | Informational | June 1999 |
| 2615 | PPP over SONET/SDHA. Malis, W. Simpson | Proposed Standard | June 1999 |
| 2616 | Hypertext Transfer Protocol -- HTTP/1.1R. Fielding, J. Gettys, J. Mogul, H. Frystyk, L. Masinter, P. Leach, T. Berners-Lee · obsoleted by RFC 7230, RFC 7231, RFC 7232, RFC 7233, RFC 7234, RFC 7235 | Draft Standard | June 1999 |
| 2617 | HTTP Authentication: Basic and Digest Access AuthenticationJ. Franks, P. Hallam-Baker, J. Hostetler, S. Lawrence, P. Leach, A. Luotonen, L. Stewart · obsoleted by RFC 7235, RFC 7615, RFC 7616, RFC 7617 | Draft Standard | June 1999 |
| 2618 | RADIUS Authentication Client MIBB. Aboba, G. Zorn · obsoleted by RFC 4668 | Proposed Standard | June 1999 |
| 2619 | RADIUS Authentication Server MIBG. Zorn, B. Aboba · obsoleted by RFC 4669 | Proposed Standard | June 1999 |
| 2620 | RADIUS Accounting Client MIBB. Aboba, G. Zorn · obsoleted by RFC 4670 | Informational | June 1999 |
| 2621 | RADIUS Accounting Server MIBG. Zorn, B. Aboba · obsoleted by RFC 4671 | Informational | June 1999 |
| 2622 | Routing Policy Specification Language (RPSL)C. Alaettinoglu, C. Villamizar, E. Gerich, D. Kessens, D. Meyer, T. Bates, D. Karrenberg, M. Terpstra | Proposed Standard | June 1999 |
| 2623 | NFS Version 2 and Version 3 Security Issues and the NFS Protocol's Use of RPCSEC_GSS and Kerberos V5M. Eisler | Proposed Standard | June 1999 |
| 2624 | NFS Version 4 Design ConsiderationsS. Shepler | Informational | June 1999 |
| 2625 | IP and ARP over Fibre ChannelM. Rajagopal, R. Bhagwat, W. Rickard · obsoleted by RFC 4338 | Proposed Standard | June 1999 |
| 2626 | The Internet and the Millennium Problem (Year 2000)P. Nesser II | Informational | June 1999 |
| 2627 | Key Management for Multicast: Issues and ArchitecturesD. Wallner, E. Harder, R. Agee | Informational | June 1999 |
| 2628 | Simple Cryptographic Program Interface (Crypto API)V. Smyslov | Informational | June 1999 |
| 2629 | Writing I-Ds and RFCs using XMLM. Rose · obsoleted by RFC 7749 | Informational | June 1999 |
| 2630 | Cryptographic Message SyntaxR. Housley · obsoleted by RFC 3369, RFC 3370 | Proposed Standard | June 1999 |
| 2631 | Diffie-Hellman Key Agreement MethodE. Rescorla | Proposed Standard | June 1999 |
| 2632 | S/MIME Version 3 Certificate HandlingB. Ramsdell, Ed. · obsoleted by RFC 3850 | Proposed Standard | June 1999 |
| 2633 | S/MIME Version 3 Message SpecificationB. Ramsdell, Ed. · obsoleted by RFC 3851 | Proposed Standard | June 1999 |
| 2634 | Enhanced Security Services for S/MIMEP. Hoffman, Ed. | Proposed Standard | June 1999 |
| 2635 | DON'T SPEW A Set of Guidelines for Mass Unsolicited Mailings and Postings (spam*)S. Hambridge, A. Lunde | Informational | June 1999 |
| 2636 | Wireless Device Configuration (OTASP/OTAPA) via ACAPR. Gellens | Informational | July 1999 |
| 2637 | Point-to-Point Tunneling Protocol (PPTP)K. Hamzeh, G. Pall, W. Verthein, J. Taarud, W. Little, G. Zorn | Informational | July 1999 |
| 2638 | A Two-bit Differentiated Services Architecture for the InternetK. Nichols, V. Jacobson, L. Zhang | Informational | July 1999 |
| 2639 | Internet Printing Protocol/1.0: Implementer's GuideT. Hastings, C. Manros · obsoleted by RFC 3196 | Informational | July 1999 |
| 2640 | Internationalization of the File Transfer ProtocolB. Curtin | Proposed Standard | July 1999 |
| 2641 | Cabletron's VlanHello Protocol Specification Version 4D. Hamilton, D. Ruffen | Informational | August 1999 |
| 2642 | Cabletron's VLS Protocol SpecificationL. Kane | Informational | August 1999 |
| 2643 | Cabletron's SecureFast VLAN Operational ModelD. Ruffen, T. Len, J. Yanacek | Informational | August 1999 |
| 2644 | Changing the Default for Directed Broadcasts in RoutersD. Senie | Best Current Practice | August 1999 |
| 2645 | ON-DEMAND MAIL RELAY (ODMR) SMTP with Dynamic IP AddressesR. Gellens | Proposed Standard | August 1999 |
| 2646 | The Text/Plain Format ParameterR. Gellens, Ed. · obsoleted by RFC 3676 | Proposed Standard | August 1999 |
| 2647 | Benchmarking Terminology for Firewall PerformanceD. Newman | Informational | August 1999 |
| 2648 | A URN Namespace for IETF DocumentsR. Moats | Informational | August 1999 |
| 2649 | An LDAP Control and Schema for Holding Operation SignaturesB. Greenblatt, P. Richard | Experimental | August 1999 |
| 2650 | Using RPSL in PracticeD. Meyer, J. Schmitz, C. Orange, M. Prior, C. Alaettinoglu | Informational | August 1999 |
| 2651 | The Architecture of the Common Indexing Protocol (CIP)J. Allen, M. Mealling | Proposed Standard | August 1999 |
| 2652 | MIME Object Definitions for the Common Indexing Protocol (CIP)J. Allen, M. Mealling | Proposed Standard | August 1999 |
| 2653 | CIP Transport ProtocolsJ. Allen, P. Leach, R. Hedberg | Proposed Standard | August 1999 |
| 2654 | A Tagged Index Object for use in the Common Indexing ProtocolR. Hedberg, B. Greenblatt, R. Moats, M. Wahl | Experimental | August 1999 |
| 2655 | CIP Index Object Format for SOIF ObjectsT. Hardie, M. Bowman, D. Hardy, M. Schwartz, D. Wessels | Experimental | August 1999 |
| 2656 | Registration Procedures for SOIF Template TypesT. Hardie | Experimental | August 1999 |
| 2657 | LDAPv2 Client vs. the Index MeshR. Hedberg | Experimental | August 1999 |
| 2658 | RTP Payload Format for PureVoice(tm) AudioK. McKay | Proposed Standard | August 1999 |
| 2659 | Security Extensions For HTMLE. Rescorla, A. Schiffman | Experimental | August 1999 |
| 2660 | The Secure HyperText Transfer ProtocolE. Rescorla, A. Schiffman | Historic | August 1999 |
| 2661 | Layer Two Tunneling Protocol "L2TP"W. Townsley, A. Valencia, A. Rubens, G. Pall, G. Zorn, B. Palter | Proposed Standard | August 1999 |
| 2662 | Definitions of Managed Objects for the ADSL LinesG. Bathrick, F. Ly | Proposed Standard | August 1999 |
| 2663 | IP Network Address Translator (NAT) Terminology and ConsiderationsP. Srisuresh, M. Holdrege | Informational | August 1999 |
| 2664 | FYI on Questions and Answers - Answers to Commonly Asked "New Internet User" QuestionsR. Plzak, A. Wells, E. Krol | Informational | August 1999 |
| 2665 | Definitions of Managed Objects for the Ethernet-like Interface TypesJ. Flick, J. Johnson · obsoleted by RFC 3635 | Proposed Standard | August 1999 |
| 2666 | Definitions of Object Identifiers for Identifying Ethernet Chip SetsJ. Flick | Informational | August 1999 |
| 2667 | IP Tunnel MIBD. Thaler · obsoleted by RFC 4087 | Proposed Standard | August 1999 |
| 2668 | Definitions of Managed Objects for IEEE 802.3 Medium Attachment Units (MAUs)A. Smith, J. Flick, K. de Graaf, D. Romascanu, D. McMaster, K. McCloghrie, S. Roberts · obsoleted by RFC 3636 | Proposed Standard | August 1999 |
| 2669 | DOCSIS Cable Device MIB Cable Device Management Information Base for DOCSIS compliant Cable Modems and Cable Modem Termination SystemsM. St. Johns, Ed. · obsoleted by RFC 4639 | Proposed Standard | August 1999 |
| 2670 | Radio Frequency (RF) Interface Management Information Base for MCNS/DOCSIS compliant RF interfacesM. St. Johns, Ed. · obsoleted by RFC 4546 | Proposed Standard | August 1999 |
| 2671 | Extension Mechanisms for DNS (EDNS0)P. Vixie · obsoleted by RFC 6891 | Proposed Standard | August 1999 |
| 2672 | Non-Terminal DNS Name RedirectionM. Crawford · obsoleted by RFC 6672 | Proposed Standard | August 1999 |
| 2673 | Binary Labels in the Domain Name SystemM. Crawford · obsoleted by RFC 6891 | Historic | August 1999 |
| 2674 | Definitions of Managed Objects for Bridges with Traffic Classes, Multicast Filtering and Virtual LAN ExtensionsE. Bell, A. Smith, P. Langille, A. Rijhsinghani, K. McCloghrie · obsoleted by RFC 4363 | Proposed Standard | August 1999 |
| 2675 | IPv6 JumbogramsD. Borman, S. Deering, R. Hinden | Proposed Standard | August 1999 |
| 2676 | QoS Routing Mechanisms and OSPF ExtensionsG. Apostolopoulos, S. Kamat, D. Williams, R. Guerin, A. Orda, T. Przygienda | Experimental | August 1999 |
| 2677 | Definitions of Managed Objects for the NBMA Next Hop Resolution Protocol (NHRP)M. Greene, J. Cucchiara, J. Luciani | Proposed Standard | August 1999 |
| 2678 | IPPM Metrics for Measuring ConnectivityJ. Mahdavi, V. Paxson | Proposed Standard | September 1999 |
| 2679 | A One-way Delay Metric for IPPMG. Almes, S. Kalidindi, M. Zekauskas · obsoleted by RFC 7679 | Proposed Standard | September 1999 |
| 2680 | A One-way Packet Loss Metric for IPPMG. Almes, S. Kalidindi, M. Zekauskas · obsoleted by RFC 7680 | Proposed Standard | September 1999 |
| 2681 | A Round-trip Delay Metric for IPPMG. Almes, S. Kalidindi, M. Zekauskas | Proposed Standard | September 1999 |
| 2682 | Performance Issues in VC-Merge Capable ATM LSRsI. Widjaja, A. Elwalid | Informational | September 1999 |
| 2683 | IMAP4 Implementation RecommendationsB. Leiba | Informational | September 1999 |
| 2684 | Multiprotocol Encapsulation over ATM Adaptation Layer 5D. Grossman, J. Heinanen | Proposed Standard | September 1999 |
| 2685 | Virtual Private Networks IdentifierB. Fox, B. Gleeson | Proposed Standard | September 1999 |
| 2686 | The Multi-Class Extension to Multi-Link PPPC. Bormann | Proposed Standard | September 1999 |
| 2687 | PPP in a Real-time Oriented HDLC-like FramingC. Bormann | Proposed Standard | September 1999 |
| 2688 | Integrated Services Mappings for Low Speed NetworksS. Jackowski, D. Putzolu, E. Crawley, B. Davie | Proposed Standard | September 1999 |
| 2689 | Providing Integrated Services over Low-bitrate LinksC. Bormann | Informational | September 1999 |
| 2690 | A Proposal for an MOU-Based ICANN Protocol Support OrganizationS. Bradner | Informational | September 1999 |
| 2691 | A Memorandum of Understanding for an ICANN Protocol Support OrganizationS. Bradner | Informational | September 1999 |
| 2692 | SPKI RequirementsC. Ellison | Experimental | September 1999 |
| 2693 | SPKI Certificate TheoryC. Ellison, B. Frantz, B. Lampson, R. Rivest, B. Thomas, T. Ylonen | Experimental | September 1999 |
| 2694 | DNS extensions to Network Address Translators (DNS_ALG)P. Srisuresh, G. Tsirtsis, P. Akkiraju, A. Heffernan | Informational | September 1999 |
| 2695 | Authentication Mechanisms for ONC RPCA. Chiu | Informational | September 1999 |
| 2696 | LDAP Control Extension for Simple Paged Results ManipulationC. Weider, A. Herron, A. Anantha, T. Howes | Informational | September 1999 |
| 2697 | A Single Rate Three Color MarkerJ. Heinanen, R. Guerin | Informational | September 1999 |
| 2698 | A Two Rate Three Color MarkerJ. Heinanen, R. Guerin | Informational | September 1999 |
| 2699 | Request for Comments Summary RFC Numbers 2600-2699S. Ginoza | Informational | May 2000 |