EPP (Extensible Provisioning Protocol)

EPP (Extensible Provisioning Protocol) is the XML-based command protocol defined in RFC 5730 that governs how a registrar communicates with a registry to create, update, transfer, or delete domain registrations. Every time a registrar registers a new name, renews it, or initiates a transfer, it sends an EPP command over a secure TCP session to the registry's EPP server and receives a structured response confirming success or reporting an error. The protocol also carries the auth-code used to authorize outbound transfers and surfaces the EPP status codes — such as clientTransferProhibited or serverHold — that describe a domain's current state. Because EPP is tightly controlled, access is limited to accredited registrars; end users never interact with it directly. Namefi bridges the gap between this traditional registry plumbing and on-chain ownership: when a user holds a tokenized domain in their wallet, Namefi's backend coordinates the corresponding EPP operations with the registry, so blockchain-based transfers remain synchronized with the authoritative DNS record. Source: IETF RFC 5730.