XO Communications Customer Care service Phone number, Office Address, Toll-Free, Social profiles, Online Payment– XO Communications is a telecommunications organisation and XO Holdings, Inc handle this company. It gives oversaw and merged Internet Protocol (IP) system administrations for small as well as medium-sized endeavors. This company conveys services through the fiber-based Ethernet and Ethernet over Copper (EoC). The organization has external network to network interface (E-NNI) which is linked with tradition carriers and cable organizations.