europa.*
International newsgroups hierarchy for topics covering the continent of Europe.
http://www.europa.usenet.eu.org/

ca.*
The California Usenet Project is an effort to coordinate the ca.* hierarchy (California, United States). Lists of newsgroups, charters, and plans.
http://www.sbay.org/ca/

nj.*
New Jersey, United States. Rules, checkgroups, administration, list of groups.
http://www.exit109.com/~jeremy/nj/

japan.*
One of the hierarchies for Japan (along with fj.*). Checkgroups, sample control.ctl entry, policies.
http://www.asahi-net.or.jp/~AE5T-KSN/japan-e.html

sbay.*
South Bay (San Jose and nearby areas, about 50 miles south of San Francisco), California, United States. Charters, policies, group list.
http://www.sbay.org/sbay-newsgroups.html

k12.*
The history of the hierarchy, a list of all newsgroups in the hierarchy, information about each group, and links to pages about some of the individual groups.
http://www.k12groups.org/

alabama.*
Presentation of the hierarchy dedicated to Alabama.
http://alumnus.caltech.edu/~dank/us.config/us.al.txt

Master List of Newsgroup Hierarchies
A complete list of newsgroup hierarchies and their descriptions.
http://www.magma.ca/~leisen/mlnh/

UK Usenet
Homepage of the UK Usenet Committee. Information about usenet newsgroups in the United Kingdom.
http://www.usenet.org.uk/

Big-8 Usenet
Management board of the big 8 hierarchies: controls creation, naming, moderation policies and removal processes for newsgroups in those hierarchies. Includes a FAQ and details of recent announcements.
http://www.big-8.org/

News-admin.org
Links to several top-level hierarchies, any of which may register a subdomain of news-admin.org for their hierarchy.
http://www.news-admin.org/

sfnet Newsgroups
Presentation of the administered Finnish hierarchy: spam and binary cancel policy, control messages and the associated PGP key as well as the checkgroup list.
http://www.cs.tut.fi/sfnet/

finet.*
Presentation of the free (as in alt.*) Finnish hierarchy. Checkgroup list and binary policy.
http://www.cis.hut.fi/kaip/finet/

ch.*
Provides an overview over Swiss newsgroups and the charter for each group, as well as the history of the hierarchy reorganization.
http://www.use-net.ch/

no.*
Presentation of the Norwegian hierarchy: checkgroups, PGP signed control key, control message archive and configuration information for INN.
http://www.usenet.no/no-admin.html

Usenet Hierarchy Administration FAQ
Provides help to Usenet hierarchy administrators who try to maintain the canonical lists of newsgroups in managed hierarchies.
http://www.eyrie.org/~eagle/faqs/usenet-hier.html

pl.*
Explains how to add Polish pl.* hierarchy to a news server, briefly presents the hierarchy and provides technical information.
http://www.usenet.pl/doc/news-pl-new-site-faq.html

gnUSENET
Presentation of the gnu.* hierarchy, which is a collection of newsgroups about the Free Software Foundation's GNU Project. Most of these newsgroups correspond to GNU mailing lists.
http://www.gnu.org/usenet/

Furrynet (fur.*) Newsgroups
Details about Furrynet, a private news hierarchy for furries.
http://www.tigerden.com/infopage/furry/furrynet.html

cmeerw.org: openwatcom.*
Presentation of the small hierarchy dedicated to the open source Open Watcom cross compilers. Archived control messages, list of bogus groups and servers carrying the hierarchy, news feeds for other servers.
http://cmeerw.org/openwatcom/

BIOSCI - Bionet Newsgroups
Promotes communication between professionals in the biological sciences. Includes related resource links. From Stanford University.
http://www.bio.net/

hamster.*
Presentation of the hierarchy dedicated to hamster, a local mail and newsserver with many tools around. Group list, charters, posting rules, PGP key and checkgroup messages available.
http://www.arcorhome.de/newshamster/micha/usenet/

Trigofacile.com: Hierarchies
Canonical list of managed, unmanaged, local and private hierarchies with information on how to carry them: newsgroups list, PGP key, contact, URL.
http://usenet.trigofacile.com/hierarchies/

it.*
Site in Italian and English. Includes the PGP key for verifying control messages, servers configuration FAQ for the hierarchy and the latest checkgroups control message.
http://www.news.nic.it/

borland.*
Presentation of this hierarchy provided as a user supported area to exchange information, tips and techniques for the community of Borland customers.
http://info.borland.com/newsgroups/

Usenet II
The net.* hierarchy is based on the concept of "sound sites". The goal is to create a new Usenet as free as possible from spam and other maladies.
http://www.usenet2.org/