XO Communications
| Company type | Private |
|---|---|
| Industry | Telecommunications |
| Predecessor | Nextlink Communications, Concentric Network Corporation, Allegiance Telecom, Inc. |
| Fate | Acquired by Verizon Communications |
| Headquarters | United States |
| Products | Managed and integrated IP network solutions, fiber-optic Ethernet, Ethernet over Copper (EoC) |
| Parent | Verizon Communications (after 2017) |
XO Communications, LLC, previously known as Nextlink Communications, Concentric Network Corporation, and Allegiance Telecom, Inc., was a telecommunications firm based in the United States that was eventually acquired and merged into Verizon Communications.
Services
XO focused on delivering managed and integrated Internet Protocol (IP) network solutions primarily for small to medium-sized businesses. Its service portfolio included fiber-optic Ethernet and Ethernet over Copper (EoC) technologies. Additionally, the company established external network-to-network interface (E-NNI) partnerships with established carriers and cable operators.
Acquisition
On February 22, 2016, Verizon declared its plan to purchase XO's fiber network division. The acquisition, valued at $1.8 billion, was finalized in 2017 and significantly increased Verizon’s metropolitan fiber footprint across 45 markets, supporting its 5G gigabit wireless initiatives. By the middle of 2020, Verizon had fully transitioned all XO services onto its platform.