Many archive sites list RFCs by number so it is useful to consult the RFC index or use a search tool to find an RFC on a specific subject. FYIs are intended for a wide audience ranging from new Internet users to Internet tool developers. Unlike RFCs, FYIs retain the same number when they are edited even when the corresponding RFC number changes. STDs include both technical specifications and applicability statements that have completed the IAB's full process of standardization. Unlike RFCs, STDs retain the same number when they are edited even when the corresponding RFC number changes.
Internet Drafts approved by the Internet community become RFCs.