The Network Working Group (NWG) came up with the Request for Comments (RFCs) with Jon Postel as the editor. The RFCs were technical proposals and notes from meetings held by the NWG.
At first they were only available on paper, but soon they were available online and kept at the Stanford Research Institute’s Network Information Center. In 1984 he co–wrote RFC 920 with Joyce Reynolds. This RFC established the first top–level domains, such as .com, .edu, .gov, .mil and .org.
Currently, there are many active working groups within the Internet Engineering Task Force (IETF) that are broken down into different areas, such as the Applications area, Routing area, Transport area, etc... 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 Once issued a numerical identifier and published, an RFC is never rescinded or modified; if the document requires amendments, the authors publish a revised document; therefore, some RFCs make others obsolete, or "deprecated".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.