1990 - 2005
Carolina Telephone and Telegraph Company is a Sprint company which included one study area jurisdiction: North Carolina. Carolina Telephone and Telegraph Company had no changes during this period.
In 2006, following a 2004 merger between Sprint and Nextel, the Sprint local telephone companies were spun off to become Embarq Local Operating Companies, though the company's name did not change.
2007 - 2009
The company had no changes during this period.