1990 - 2005
United Telephone Company of South Carolina continues as an operating company under the Sprint holding company with one study area jurisdiction: South Carolina. United Telephone of South Carolina 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 United Telephone Company of the Carolinas.
2007 - 2009
The company had no changes during this period.