GTE Corporation, formerly General Telephone & Electronics Corporation (1955–1982), was the largest independent telephone company in the United States during the days of the Bell System. The company operated from 1926, with roots tracing further back than that, until 2000, when it was acquired by Bell Atlantic; the combined company took the name Verizon.
A Regional Bell Operating Company (RBOC) was a corporate entity created as result of the antitrust lawsuit by the U.S. Department of Justice against the American Telephone and Telegraph Company (AT&T) in 1974 and settled in the Modification of Final Judgment on January 8, 1982.
Cellular One is the trademarked brand name that licenses services used by several cellular service providers in the United States. The brand was sold to Trilogy Partners by AT&T in 2008 shortly after AT&T had completed its acquisition of Dobson Communications. Cellular One was originally the trade name of one of the first mobile telephone service providers.
The breakup of the Bell System was mandated on January 8, 1982, by a consent decree providing that AT&T Corporation would, as had been initially proposed by AT&T, relinquish control of the Bell Operating Companies, which had provided local telephone service in the United States. This effectively took the monopoly that was the Bell System and split it into entirely separate companies that would continue to provide telephone service. AT&T would continue to be a provider of long-distance service, while the now-independent Regional Bell Operating Companies (RBOCs), nicknamed the "Baby Bells", would provide local service, and would no longer be directly supplied with equipment from AT&T subsidiary Western Electric.
AirTouch Communications was an American wireless telephone service provider, created as a spin-off on Pacific Telesis on April 1, 1994. Its headquarters were in One California in the Financial District, San Francisco, California. After a series of mergers, the company's vestiges are now part of Verizon Wireless.
Hawaiian Telcom, Inc., is the incumbent local exchange carrier (ILEC) or dominant local telephone company, serving the state of Hawaii. In 2005, Hawaiian Telcom Holdco, Inc., was formed by The Carlyle Group, following its purchase of the Hawaiian Telcom Inc. assets of Verizon Communications. On July 2, 2018, Cincinnati Bell purchased Hawaiian Telcom Holdco, Inc. for $650 Million,
Verizon New England, Inc. was a Bell Operating Company that once covered most of New England but most recently only served most of Massachusetts and all of Rhode Island. It was formerly New England Telephone and Telegraph Company, more commonly known as New England Telephone, which for seven decades served most of the New England area of the United States as a part of the original AT&T. New England Telephone's original coverage area included Maine, New Hampshire, and Vermont as well as Massachusetts and Rhode Island, Verizon has sold off service in the northern three states, which as of 2020 were served by Consolidated Communications.
Verizon New Jersey, Inc., formerly New Jersey Bell Telephone Company, is the Bell Operating Company serving the U.S. state of New Jersey. In 1984, the Bell System Divestiture split New Jersey Bell off into a Regional Bell Operating Company, along with the 21 other BOCs AT&T had a majority stake in. On January 1, 1984, New Jersey Bell became part of Bell Atlantic.
The Chesapeake and Potomac Telephone Company, usually known as C&P Telephone, is a former d/b/a name for four Bell Operating Companies providing service to Washington, D.C., Maryland, West Virginia, and Virginia.
Northwest Fiber, LLC, doing business as Ziply Fiber, is an American telecommunications company based in Kirkland, Washington. Ziply is a subsidiary of WaveDivision Capital, a private investment company, which is also Kirkland-based. The company started operations on May 1, 2020 when it completed its acquisition of Frontier Communications Northwest operations and assets for $1.4 billion; Frontier sold its Northwest operations after filing for bankruptcy protection in April 2020. Ziply Fiber's footprint covers the Pacific Northwest region, specifically the states of Washington, Oregon, Idaho and Montana. Its key offerings include fiber internet and phone for residential customers, Business Fiber Internet, and Ziply Voice services for small businesses; and a variety of internet, networking and voice solutions for enterprise customers. The company will also continue to support DSL and grandfathered TV customers. Ziply has stated that it plans on investing $500 million to improve its network and service throughout its footprint. This includes bringing fiber to nearly 85% of its network, which mainly encompasses rural communities. Currently approximately 30% have access to fiber as of June 2020.
Verizon South, Inc. is a Verizon operating company providing local telephone services to portions of Virginia and North Carolina in the United States.
Frontier North, Inc. is a local telephone operating company owned by Frontier Communications.
Frontier Midstates, Inc. is a telephone operating company of Frontier Communications serving Indiana and Michigan. It was originally owned by Contel, and later purchased by GTE, Verizon, and then sold to Frontier.
Advanced Mobile Phone Service, Inc. was a subsidiary of AT&T prior to the Bell System Divestiture. Abbreviated AMPS, the company was created in 1978 to build and operate the new Advanced Mobile Phone System, also abbreviated AMPS. AMPS was developed by Bell Labs to replace older, severely limited radiophone services, such as IMTS. AMPS was one of the first modern cellular phone systems, which remained in operation until 2008.
The Bell System was a system of telecommunication companies, led by the Bell Telephone Company and later by the American Telephone and Telegraph Company (AT&T), that dominated the telephone services industry in North America for over 100 years from its creation in 1877 until its antitrust breakup in 1983. The system of companies was often colloquially called Ma Bell, as it held a vertical monopoly over telecommunication products and services in most areas of the United States and Canada. At the time of the breakup of the Bell System in the early 1980s, it had assets of $150 billion and employed over one million people.
Verizon Maryland LLC is Bell Operating Company owned by Verizon Communications serving the state of Maryland. Its headquarters are in Baltimore.
Frontier West Virginia, Inc. is one of the original Bell Operating Companies and provides local telephone service in the U.S. state of West Virginia.
Embarq Missouri, Inc. was a telephone operating company providing local telephone services in Kansas and Missouri owned by BrightSpeed.
