XO Communications is a full-service provider of communications services that provides voice, data, converged and managed services to various businesses and enterprises. The company serves cable companies, carriers, content providers and mobile operators. XO Communications is a subsidiary of XO Holdings, which is one of the leading providers of national and local telecommunications services to businesses, large enterprises and telecommunications companies. XO Holdings offers an array of services, including local and long-distance telephone, Internet access, private networking, long-haul network assets, data transport and Web hosting services, as well as bundled voice and Internet solutions. XO Communications is located in San Diego.
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Telephone CompaniesTelecommunications ServicesTelephone Companies-Long Distance Service