TW Telecom (styled tw telecom), was a business telecommunications company headquartered in Littleton, Colorado, United States. The company provided business voice services, transport, Internet, data services and wholesale fiber capacity. It was an early leader in the deployment of Ethernet for metropolitan areas, dubbed Metro Ethernet. The company was acquired by Level 3 Communications on November 1, 2014. Exactly three years later, CenturyLink (now Lumen Technologies) acquired Level 3 Communications on November 1, 2017.