Qwest Corporation, a subsidiary of Lumen Technologies, is a former Bell Operating Company with a rich history. Originally named Mountain States Telephone and Telegraph Company from 1911 to 1991, it was later known as U S WEST Communications, Inc. from 1991 to 2000. Qwest focuses on providing telecommunications services, including local and long-distance phone services, internet, and data services, primarily in the Western United States.

Qwest's key achievements include its extensive network infrastructure, which has significantly contributed to the telecommunications landscape in its service areas. The company has played a crucial role in connecting rural and urban communities, enhancing communication capabilities. Notable affiliated entities include Malheur Bell, Northwestern Bell, and Pacific Northwest Bell, which have been integrated into Qwest's operations over the years.