Map of Usenet 2.0
Usenet is a totally decentralized network on which all the Usenet servers are linked between each other. There are many different Usenet backbones and when a user uploads a post or file to Usenet, it propagates across all backbones owned by different companies.
The red entities are the leading companies, the backbones: UNS Holdings - Base IP - Eweka - Tweaknews - XSnews - Usenet.Farm - UsenetExpress - Vipernews - Newsgroupdirect
A backbone can have multiple entries for different locations. The best Backbone is UNS Holdings which owns and operates systems in the United States, Netherlands, and Germany.
The Blue entities are Tier-1 Providers (Back-end Usenet Providers). Tier-1 Providers are up-stream providers. They have their own servers, control their network themselves and sell on part of their network to resellers.
Very often, a backbone and a Tier-1 Provider are one and the same
The Grey entities are Reselers. A Usenet reseller runs their own usenet service without having dedicated servers. They buy gigabytes from a backbone and sell it on to customers.
This map is good as a general guide. This map makes it easy to see which backbones are used by your Usenet Service Provider. This is to hopefully understand more about which backbones they source their data from.
A Map of Usenet