Also see: Protocol | Usenet | TCP.

Acronym: Network News Transfer Protocol

The protocol used to upload or download a Usenet post. Replaced UUCP. Used in both server-server as well as client-server connections.

The standard port for NNTP servers is 119/tcp (“nntp”). The standard port for NNTP over SSL is 563/tcp or 563/udp (“snntp” aka “nntps”)

More info.


  • RFC 977 – Network News Transfer Protocol: A proposed standard for the stream-based transmission of news (from 1986).
  • RFC 1036 – Format of Usenet messages.
  • RFC 2980 – Common NNTP extensions.

TakeDown.NET -> “NNTP