1990 - 2005
United Telephone Company of Missouri continues as an operating company under the Sprint holding company with one study area jurisdiction: Missouri. United Telephone of Missouri had no changes since 1990.
In 2006, following a 2004 merger between Sprint and Nextel, the Sprint local telephone companies were spun off to become Embarq Local Operating Companies, and the company was renamed Embarq Missouri.
2007 - 2009
The company had no changes during this period.