| April 1, 2024 | RFC 9564 | Faster Than Light Speed Protocol (FLIP) |
| April 1, 2023 | RFC 9401 | The Addition of the Death (DTH) Flag to TCP |
| RFC 9402 | Concat Notation | |
| RFC 9405 | AI Sarcasm Detection: Insult Your AI without Offending It | |
| April 1, 2022 | RFC 9225 | Software Defects Considered Harmful |
| RFC 9226 | Bioctal: Hexadecimal 2.0 | |
| April 1, 2021 | RFC 8962 | Establishing the Protocol Police |
| April 1, 2020 | RFC 8771 | The Internationalized Deliberately Unreadable Network NOtation (I-DUNNO) |
| RFC 8774 | The Quantum Bug | |
| April 1, 2019 | RFC 8565 | Hypertext Jeopardy Protocol (HTJP/1.0) |
| RFC 8567 | Customer Management DNS Resource Records | |
| April 1, 2018 | RFC 8367 | Wrongful Termination of Internet Protocol (IP) Packets |
| RFC 8369 | Internationalizing IPv6 Using 128-Bit Unicode | |
| April 1, 2017 | RFC 8135 | Complex Addressing in IPv6 |
| RFC 8136 | Additional Transition Functionality for IPv6 | |
| RFC 8140 | The Arte of ASCII: Or, An True and Accurate Representation of an Menagerie of Thynges Fabulous and Wonderful in Ye Forme of Character | |
| April 1, 2016 | No April 1 RFCs in 2016 | |
| April 1, 2015 | RFC 7511 | Scenic Routing for IPv6 |
| RFC 7514 | Really Explicit Congestion Notification (RECN) | |
| April 1, 2014 | RFC 7168 | The Hyper Text Coffee Pot Control Protocol for Tea Efflux Appliances (HTCPCP-TEA) |
| RFC 7169 | The NSA (No Secrecy Afforded) Certificate Extension | |
| April 1, 2013 | RFC 6919 | Further Key Words for Use in RFCs to Indicate Requirement Levels |
| RFC 6921 | Design Considerations for Faster-Than-Light (FTL) Communication | |
| April 1, 2012 | RFC 6592 | The Null Packet |
| RFC 6593 | Service Undiscovery Using Hide-and-Go-Seek for the Domain Pseudonym System (DPS) | |
| April 1, 2011 | RFC 5984 | Increasing Throughput in IP Networks with ESP-Based Forwarding: ESPBasedForwarding |
| RFC 6214 | Adaptation of RFC 1149 for IPv6 | |
| RFC 6217 | Regional Broadcast Using an Atmospheric Link Layer | |
| April 1, 2010 | RFC 5841 | TCP Option to Denote Packet Mood |
| April 1, 2009 | RFC 5513 | IANA Considerations for Three Letter Acronyms |
| RFC 5514 | IPv6 over Social Networks | |
| April 1, 2008 | RFC 5241 | Naming Rights in IETF Protocols |
| RFC 5242 | A Generalized Unified Character Code: Western European and CJK Sections | |
| April 1, 2007 | RFC 4824 | The Transmission of IP Datagrams over the Semaphore Flag Signaling System (SFSS) |
| April 1, 2006 | No April 1 RFCs in 2006 | |
| April 1, 2005 | RFC 4041 | Requirements for Morality Sections in Routing Area Drafts |
| RFC 4042 | UTF-9 and UTF-18 Efficient Transformation Formats of Unicode | |
| April 1, 2004 | RFC 3751 | Omniscience Protocol Requirements |
| April 1, 2003 | RFC 3514 | The Security Flag in the IPv4 Header |
| April 1, 2002 | RFC 3251 | Electricity over IP |
| RFC 3252 | Binary Lexical Octet Ad-hoc Transport | |
| April 1, 2001 | RFC 3091 | Pi Digit Generation Protocol |
| RFC 3092 | Etymology of "Foo" | |
| RFC 3093 | Firewall Enhancement Protocol (FEP) | |
| April 1, 2000 | RFC 2795 | The Infinite Monkey Protocol Suite (IMPS) |
| April 1, 1999 | RFC 2549 | IP over Avian Carriers with Quality of Service |
| RFC 2550 | Y10K and Beyond | |
| RFC 2551 | The Roman Standards Process -- Revision III | |
| April 1, 1998 | RFC 2321 | RITA -- The Reliable Internetwork Troubleshooting Agent |
| RFC 2322 | Management of IP numbers by peg-dhcp | |
| RFC 2323 | IETF Identification and Security Guidelines | |
| RFC 2324 | Hyper Text Coffee Pot Control Protocol (HTCPCP/1.0) | |
| RFC 2325 | Definitions of Managed Objects for Drip-Type Heated Beverage Hardware Devices using SMIv2 | |
| April 1, 1997 | RFC 2100 | The Naming of Hosts |
| April 1, 1996 | RFC 1924 | A Compact Representation of IPv6 Addresses |
| RFC 1925 | The Twelve Networking Truths | |
| RFC 1926 | An Experimental Encapsulation of IP Datagrams on Top of ATM | |
| RFC 1927 | Suggested Additional MIME Types for Associating Documents | |
| April 1, 1995 | RFC 1776 | The Address is the Message |
| April 1, 1994 | RFC 1605 | SONET to Sonnet Translation |
| RFC 1606 | A Historical Perspective On The Usage Of IP Version 9 | |
| RFC 1607 | A View From The 21st Century | |
| April 1, 1993 | RFC 1437 | The Extension of MIME Content-Types to a New Medium |
| RFC 1438 | Internet Engineering Task Force Statements Of Boredom (SOBs) | |
| April 1, 1992 | RFC 1313 | Today's Programming for KRFC AM 1313 Internet Talk Radio |
| April 1, 1991 | RFC 1216 | Gigabit network economics and paradigm shifts |
| RFC 1217 | Memo from the Consortium for Slow Commotion Research (CSCR) | |
| April 1, 1990 | RFC 1149 | Standard for the transmission of IP datagrams on avian carriers |
| April 1, 1989 | RFC 1097 | Telnet subliminal-message option |
| April 1, 1978 | RFC 748 | Telnet randomly-lose option |