XO Communications, LLC owns and operates IP and Ethernet networks. It offers networking services, such as bandwidth on demand, wide area networking, Internet access, Ethernet services, and private line services; unified communications services, including hosted PBX, voice over IP, SIP, contact center, and traditional voice services; cloud and information technology services, which comprise cloud computing, hosted exchange, and colocation; and managed services. The company also provides security services, such as hosted and site security; and wholesale services, including network transport, Internet access, and VPN services to national and international telecommunications carriers, cable companies, content providers, and mobile wireless companies. It provides its services to enterprise, small, medium, and wholesale business customers in financial, healthcare, media and entertainment, professional services, and retail industries in the United States and internationally. The company was founded in 2000 and is based in Herndon, Virginia. As of February 1, 2017, XO Communications, LLC operates as a subsidiary of Verizon Communications Inc.