Extensible Provisioning Protocol — how domain registrars create and update domains at a registry.
EPP (RFC 5730) is the XML request/response protocol registrars use to register, renew, transfer and delete domain names, hosts and contacts at a registry such as Verisign or a ccTLD operator. RFC 5734 defines its TCP transport: each session runs inside TLS on port 700, opens with a greeting, and requires a login command with registrar credentials. Registries restrict it to allowlisted registrar source IPs with client certificates, so it is public-by-design but never open to the world. If you find 700 open, it is a registry, a registrar's test/OT&E endpoint, or an EPP server implementation someone is developing against.
Expose with care
Legitimately reachable across the internet, but only ever from allowlisted registrar IPs with mutual TLS — an EPP endpoint accepting arbitrary sources is misconfigured.
$ openssl s_client -connect TARGET:700Seen this on your network? Beige Box scans your Wi-Fi and shows every open port on every device — and its Ports tool links straight back here.
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