1. "Usenet is distributed among a large, constantly changing set of news servers that store and forward messages to one another via 'news feeds'." (Wikipedia: Usenet, 6.10.23 UTC 14:34)
2. " On the Internet, Usenet is transported via the Network News Transfer Protocol (NNTP) on TCP Port 119 for standard, unprotected connections and on TCP port 563 for SSL encrypted connections." (Wikipedia: Usenet, 6.10.23 UTC 14:34)
3. "The format and transmission of Usenet articles is similar to that of Internet e-mail messages. The difference between the two is that Usenet articles can be read by any user whose news server carries the group to which the message was posted..." (Wikipedia: Usenet, 6.10.23 UTC 14:34)
4. "[Usenet] was developed from the general purpose Unix-to-Unix (UUCP) dial-up network architecture." (Wikipedia: Usenet, 6.10.23 UTC 14:34)
