Private company

XO Communications

Logo: XO Communications, Public domain, via Wikimedia Commons3

American telecommunications company

XO Communications, LLC, previously Nextlink Communications, Concentric Network Corporation and Allegiance Telecom, Inc., was an American telecommunications company. It was purchased and replaced by Verizon Communications.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1996Founded1
  • Industrytelecommunications industry1
  • HeadquartersHerndon1
  • Websitewww.xo.com

XO Communications, LLC, previously Nextlink Communications, Concentric Network Corporation and Allegiance Telecom, Inc., was an American telecommunications company. It was purchased and replaced by Verizon Communications.2

Products and brands

  • Voice over IP

Listed on Wikidata.1

Timeline

  1. 1996Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

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