Who hosts a newsgroup?
Unlike web sites, newsgroups are not located on any particular host computer. Each News Service Provider (NSP) decides what groups to carry. For each group carried, the NSP receives new posts from its partners and passes new posts on to them using the Network News Transfer Protocol (NNTP). In other words, a newsgroup is not a web site. The content of newsgroups (new posts) gets carried from one NNTP server to another.