The Chesapeake and Potomac Telephone Company, usually known as C&P Telephone, was a d/b/a name for four Bell Operating Companies providing service to Washington, D.C., Maryland, West Virginia, and Virginia.Three of the companies are owned by Verizon Communications:The Chesapeake and Potomac Telephone Company (DC)The Chesapeake and Potomac Telephone Company of MarylandThe Chesapeake and Potomac Telephone Company of VirginiaOne company is owned by Frontier Communications:The Chesapeake and Potomac Telephone Company of West Virginia