| XO Communications, LLC | |
| Trade Name: | XO |
| Type: | Subsidiary |
| Industry: | Telecommunications |
| Fate: | Replaced by Verizon |
| Predecessors: |
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| Successor: | Verizon Communications |
| Founded: | in Bellevue, Washington |
| Founders: | --> |
| Hq Location City: | Herndon, Virginia |
| Hq Location Country: | U.S. |
| Areas Served: | Primarily the United States, South America, Europe, Middle East, Asia and Oceania |
| Key People: |
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| Products: | VoIP services, Network Services, Hosted Services, Carrier / Wholesale |
| Owners: | --> |
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.
XO provided managed and converged Internet Protocol (IP) network services for small and medium-sized enterprises.[1] XO delivered services through a mix of fiber-based Ethernet and Ethernet over Copper (EoC).[2] In addition, the company had external network-to-network interface (E-NNI) agreements with traditional carriers and cable companies.[2]
In a news release dated February 22, 2016, Verizon announced plans to acquire XO Communications' "fiber-optic network business."[3] [4] In 2017, Verizon completed its $1.8 billion acquisition of XO Communications.[5] [6] As of summer 2020 all XO services have been migrated to Verizon.