The Free On-line Dictionary of Computing (30 December 2018):

Network News Transfer Protocol

   (NNTP) A protocol defined in RFC 977 for the distribution,
   inquiry, retrieval and posting of Usenet news articles
   over the Internet.  It is designed to be used between a
   news reader client such as nn or GNUS and a news
   server.  It is normally used on a connection to TCP port
   119 on the news server.  NNTP is a simple ASCII text
   protocol so even if you don't have a news reader program, you
   can just connect to the server using telnet:

   	telnet news 119

   where news is the name of your server
   (e.g. news.doc.ic.ac.uk).  Typing HELP will give a list of
   other commands.