List of United States telephone companies
This is a list of United States telephone companies. Regional Bell Operating Companies. The Regional Bell Operating Companies (RBOCs) are the result of the break-up of the Bell System in 1984. After numerous mergers, asset sales, and renamings since the break-up, these are the current successor RBOCs: Other major incumbent local exchange carriers. In the following states and regions, the primary local carrier is not an RBOC: Many other individual communities or smaller regions are also served by non-RBOC companies.