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The Big 8 Usenet newsgroup hierarchies and what they cover

Usenet Big-8 Management Board logo
(Image credit: Usenet Big-8 Management Board)

Newsgroups are specialized discussion forums that are part of an old internet technology known as Usenet (opens in new tab).

Originally developed more than 40 years ago, Usenet is still operating today, accessed via the best Usenet providers (opens in new tab) and providing dedicated Usenet newsgroup forums via the best newsgroup readers (opens in new tab). These allow people to share files and take part in conversations. 

Usenet provides several advantages for users including anonymity, rapid file sharing, group communications, long file retention times, and a clear organizational structure for newsgroups. Due to the sheer amount of information posted on Usenet, newsgroups are themed around certain areas, based on a “hierarchy” of topics. 

We’ll explore each of the eight main hierarchies of newsgroups on Usenet, and explain what type of content you might find in each one. You’ll have a good starting point for researching particular areas of internet culture, participating in threaded conversations, and downloading files based on your topics of interest.

The Usenet newsgroup hierarchy structure and naming conventions 

Usenet newsgroups are based on a “hierarchical” organization—grouping newsgroups together into common themes and then subdividing those areas into smaller and smaller niches and subcategories. At the top of the hierarchy, you have the “Big Eight” main structure. All newsgroups either fall into one of these eight master categories, or a ninth, unofficial category known as “Alt.” 

Every newsgroup has a distinct name, which explains where it is in the Usenet hierarchy. It’s helpful to illustrate this with an example. There’s a newsgroup dedicated to sharing jazz music called:

alt.binaries.sounds.mp3.jazz

Let’s break that down:

  • The first part of the name, “alt”, means this is a newsgroup in the “Alt” master category
  • The second part, “binaries”, defines this newsgroup as specifically for sharing files
  • The third part, “sounds”, shows you can expect to find audio files here
  • The fourth part, “mp3”, lists the file format
  • The final part, “jazz”, indicates the MP3 audio files are for the jazz genre

All newsgroups follow similar naming conventions. For example:

  • rec.sport.baseball.redsox would be discussions on the Boston baseball team
  • comp.graphics.apps.photoshop provides information and conversations for the popular Adobe software
  • sci.astro is for conversations on astronomy

Generally, the more sections of the newsgroup name (separated by periods), the more niche the subject matter. Users can refer to collections of newsgroups using the “*” wildcard character. For example, if you wanted to describe all newsgroups that fall under American political discussion, you might reference: talk.politics.us.* 

An overview of the Big Eight newsgroup hierarchies 

colleagues working together on computer

You can access Usenet content across a range of topics via the "Big Eight" hierarchies (Image credit: Getty Images)

The “Big Eight” newsgroup hierarchies are defined and managed by the Big 8 Management Board. The mission of this management board (opens in new tab) is to: 

  • Create well-named, well-used newsgroups in the Big 8 Usenet hierarchies
  • Make necessary adjustments to existing groups
  • Remove groups that are not well-used
  • Assist and encourage the support of a canonical Big 8 newsgroup list by Usenet sites

The name “Big Eight” is a slight misnomer, as a newsgroup can actually belong to one of nine main areas—eight “official” categories and a ninth, unofficial grouping known as “Alt.” The eight official categories are: 

  1. Comp: information on computer science, coding, development, engineering, and similar topics
  2. Humanities: files and discussions for literature, music, art, and similar topics
  3. News: discussion about Usenet itself, although this has widened to more general news topics
  4. Rec: conversations about games, hobbies, crafts, and other recreational activities
  5. Sci: topics including physics, chemistry, biology, and some other STEM subjects
  6. Soc: socializing, general chat, and discussion of social subjects
  7. Misc: miscellaneous topics that don’t fit into one of the other main hierarchies
  8. Talk: discussion of controversial subjects like politics or religion

The ninth category, “Alt,” covers topics that don’t fit into any of the other eight main areas. As the name suggests, “Alt” is home to a diverse range of newsgroups covering many different niche interests. The “Alt” grouping is outside the control of the management board. 

Country, language, and regional newsgroup hierarchies 

Newsgroups can also belong to one of several country, language, or regional hierarchies. Examples of these categories include: 

  • aus.*: Australian newsgroups
  • ba.*: discussions for the San Francisco Bay area
  • ca.*: conversations about California
  • can.*: Canadian newsgroups
  • cn.*: Chinese newsgroups
  • chi.*: discussions about the Chicago area
  • de.*: discussions in German
  • ec.*: discussions about Ecuadorian culture and society
  • fr.*: discussions in French
  • fj.*: discussions in Japanese
  • hawaii.*: discussions local to Hawaii
  • hk.*: Hong Kong newsgroups
  • it.*: discussions in Italian
  • nl.*: Dutch newsgroups
  • no.*: Norwegian newsgroups
  • pl.*: Polish newsgroups
  • uk.*: discussions on matters in the United Kingdom

Other Usenet newsgroup hierarchies 

In addition to “Alt,” other top-level hierarchies include: 

  • biz: business-related topics and discussions
  • bionet: covering biology-related content
  • k12: resources for K12 educations
  • microsoft: discussion of Microsoft products

Newsgroups dedicated to uploading, downloading, and sharing files 

screenshot of Usenet newsgroup reader in use

There are specific newsgroups aimed at file sharing, with a huge amount of storage indexed annually (Image credit: FlippyFlink/Wikipedia)

Usenet newsgroups make it easy to upload, download, and share files. These files include images, music, movies, games, videos, and many types of multimedia and other content. Although users can upload and download files to most newsgroups, there are some newsgroups dedicated only to sharing digital files. You can identify these through the word “binaries” in the newsgroup name. 

Binary files are often subject to “retention limits”, which define how long the file will be available after its uploaded. Retention times do vary between Usenet providers. Some users even take advantage of newsgroups to host data backups. Usenet can be a helpful source of user-created works, open-source software, and public domain material. 

If you’re interested in newsgroup files, you can use dedicated newsgroup reader software applications designed specifically to search for and download files. Our round-up of the best Usenet readers (opens in new tab) covers two of the most popular binary-only applications, SABnzbd and NZBGet.

If you decide to download binary files from Usenet newsgroups, be aware of the following:

  • Some of the files uploaded to Usenet newsgroups may be hacked, pirated, or otherwise compromised: this is particularly common on newsgroups with “warez” in the name, although you may find such files posted across many binaries newsgroups
  • Always ensure that you will not be in breach of any laws, policies, copyrights, EULAs, or similar restrictions through uploading, downloading, installing, using, or interacting with any files
  • Uploaded files may contain malware: always check files carefully for viruses, trojans, or other malicious payloads

The website binsearch.info allows users to view how many files are uploaded to alt.binaries.* newsgroups. This equates to more than 40 petabytes of data and more than 1.1 billion files over the last two years.

If you want to download content from Usenet, then you’ll want to prioritize unlimited connection speeds and bandwidth when choosing a Usenet provider. A number of providers offer unlimited bandwidth for downloads, including Newsleecher (opens in new tab), Newsgroup Ninja (opens in new tab), and GigaNews (opens in new tab)

Creating and removing newsgroups within the Big Eight hierarchy 

Although there are a vast number of existing Usenet newsgroups, anyone can request the formation or deletion of a newsgroup. The Big 8 Management Board uses a formal process (opens in new tab) for requesting newsgroup creation, and another for deletion (opens in new tab)

Newsgroups may also be moderated, requiring moderator preapproval of posts prior to release into the newsgroup, or unmoderated, which allows all posts. Moderated newsgroups often have “.moderated” appended to the end of the group name.

“Alt” newsgroups are not under the purview of the management board, and do not follow these policies. 

How to access Usenet newsgroups across all hierarchies 

If you want to search and interact with newsgroups, then you will need specialist software and access. You can’t access Usenet through a standard web browser—instead, you’ll need both a Usenet newsgroup reader and a Usenet provider.  

  • Usenet newsgroup readers are the software applications you can use to access content on the Usenet network
  • Usenet newsgroup providers are the services that provide that network access

 You need both of these to access newsgroup content. We’ve researched the readers and providers and can recommend the right technology for you to explore newsgroup hierarchies: 

Explore your favorite Usenet newsgroups 

Once you have a newsgroup reader and a Usenet provider, it’s time to explore. Fortunately, the strict ordering of many newsgroups within these hierarchies, and fully-featured newsgroup reader software, makes this fast and easy. Enjoy! 


Further reading on Usenet

Find out how to download from Usenet (opens in new tab), and how to access Usenet for free (opens in new tab) if you've got little to no budget. Discover more about Google's own Usenet access software, Google Groups (opens in new tab), and find out how we rated a number of Usenet providers in our reviews of Eweka (opens in new tab), UsenetServer (opens in new tab), and TweakNews (opens in new tab).

Paul is a professional writer who creates extensively researched, expert, in-depth guides across business, finance, and technology. He loves the challenge of taking complex subjects and breaking them down so they are easy to understand. He can quote 'The Princess Bride' in its entirety and believes the secret to good writing is Earl Grey tea.