119
Usenet newsgroup access (NNTP)
Network News Transfer Protocol
What is port 119?
NNTP (port 119) is the protocol for Usenet newsgroups — the internet's oldest public discussion system and predecessor to modern forums and Reddit. Some ISPs still provide NNTP servers, and it is also used by binary Usenet providers (Giganews, UsenetServer) for distributing large files. Communication is unencrypted; the encrypted variant NNTPS runs on port 563.
Quick checks
$
nc -zv example.com 119
$
nmap -p 119 example.com
$
telnet example.com 119