RFC (Request for Comments)
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A Request for Comments (RFC) is a formal document published by the Internet Engineering Task Force (IETF) that defines internet standards, protocols, and best practices. Despite the informal name, finalized RFCs are authoritative technical standards — nearly every foundational internet protocol, including [[dns|DNS]] (RFC 1034/1035), [[epp|EPP]] (RFC 5730), and [[whois-protocol|WHOIS]] (RFC 3912), is defined by an RFC. RFCs go through a proposal and review process before becoming standards.
Example
RFC 1034 and RFC 1035, published in 1987, define the core DNS protocol that still underlies all domain name resolution today.