RFC stands for "Request for Comments," but the acronym has assumed a life of its own. An RFC is no longer an invitation to discuss a standard, but rather a document adopted for publication by the Internet Engineering Task Force (IETF). Some RFCs define standards; others are categorized as Experimental or Informational. Most RFCs start off as Internet Drafts before being approved as RFCs.
RFCs and Internet Drafts are available at mirrored archives around the world. The following is a selection of sites for RFCs: