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Also known as: Usenet backbone
The set of large, densely peered servers that carry the full article feed and move it worldwide within seconds. There are only a handful of independent ones, mostly in Europe and North America; many providers are resellers of one of them. Which backbone an account sits on determines its retention, completion and the practical value of adding a second provider.
Browse all terms in Protocol & Server Infrastructure, or see the full Usenet glossary.