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In internetworking and computer network engineering, Request for Comments (RFC) documents are a series of memoranda encompassing new research, innovations, and methodologies applicable to Internet technologies.
Through the Internet Society, engineers and computer scientists may publish discourse in the form of an RFC memorandum, either for peer review or simply to convey new concepts, information, or (occasionally) engineering humor. The Internet Engineering Task Force (IETF) adopts some of the proposals published in RFCs as Internet standards.
The RFC Editor issues each RFC document with a unique serial number. Once issued a numerical identifier and published, an RFC is never rescinded or modified; if the document requires amendments, the authors publish a revised document; therefore, some RFCs make others obsolete, or "deprecated". Together, the serialized RFCs compose a continuous historical record of the evolution of Internet standards.
The w3dt RFC Search & lookup tool is based off the Official RFC Editor's database which is updated to w3dt regularly.