Level 3 Communications, Inc., together with its subsidiaries, operates as a facilities-based provider of a range of communications services primarily in North America, Europe, and rest of Latin America. It operates through two segments, Level 3 and Global Crossing. The Level 3 segment provides core network services, including transport, infrastructure, data, and local and enterprise voice services; wholesale voice services consisting of voice over Internet protocol, enhanced local, SIP Trunking, primary rate interface, long distance, and toll free services; and managed modem and its related intercarrier compensation services. The Global Crossing segment offers transport, infrastructure, IP and data, voice, and collaboration services to carrier and enterprise customers; and wholesale voice services and other services consisting of long distance voice services to carrier customers. The company primarily serves domestic and international carriers; voice service providers; wireless providers; enterprises; broadband cable television operators; Internet Service Providers; systems integrators; video distribution companies; providers of online gaming; software service providers; social networking providers; research and educational consortia; traditional media distribution companies, such as broadcasters, television networks and sports leagues; governments; regional services providers; and traditional broadcasters. Level 3 Communications, Inc. was founded in 1884 and is headquartered in Broomfield, Colorado.