Northwestern Bell Telephone Company

Northwestern Bell Telephone Company is an American communications provider that serves the states of the upper Midwest opposite the Southwestern Bell area, including Iowa, Minnesota, South Dakota, North Dakota, and Nebraska. As of 1991 the name Northwestern Bell is no longer the corporate identity, although Northwestern Bell is now owned by the Lumen Technologies and is therefore doing business as Lumen. Doing business as names were not begun before 2001; that is why the Northwestern Bell name was dormant but later revived by CenturyLink.