Giganews
Ihave, suck, and peer feeds. Customized outsourcing for ISPs. Also offers personal newsgroups services.
Newsfeeds
Ihave, pull, and outsourcing corporate feeds. Separate corporate feeds for various divisions of NetNews categories.
Prored
NNTP products for ISPs, corporations, and individuals. Separate feeds for general content, binaries, and audio/video.
Slurp
Feeds for companies, ISPs, and individuals. For example: ISPs can have their customers read NNTP from slurp.net.
Supernews
A division of Remarq providing NNTP products for ISPs, corporations, and individuals.
Usenet-se.net Peering Page
Find suitable news peers. Put up a peering request and supply data about your system as well as what you would desire from a peer.