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.
Alltel Wireless was a wireless service provider, primarily based in the United States. Before acquisitions by Verizon Wireless and AT&T, it served 34 states and had approximately 13 million subscribers. As a regulatory condition of the acquisition by Verizon, a small portion of Alltel was spun off and continued to operate under the same name in six states, mostly in rural areas. Following the merger, Alltel remained the ninth largest wireless telecommunications company in the United States, with approximately 800,000 customers. On January 22, 2013, AT&T announced they were acquiring what remained of Alltel from Atlantic Tele-Network for $780 million in cash.
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 Telecom Inc. assets of Verizon Communications. On July 2, 2018, Cincinnati Bell purchased Hawaiian Telcom Holdco, Inc. for $650 Million,
Consolidated Communications Holdings, Inc., doing business as Consolidated Communications, is an American broadband and business communications provider headquartered in Mattoon, Illinois. The company provides data, internet, voice, managed and hosted, cloud and IT services to business customers, and internet, TV, phone and home security services to residential customers. With 36,000 fiber route miles, it is a top ten fiber provider in the U.S., serving customers in 23 states.
Embarq Corporation was the largest independent local exchange carrier in the United States, serving customers in 18 states and providing local, long-distance, high-speed data and wireless services to residential and business customers. It had been formerly the local telephone division (LTD) of Sprint Nextel until 2006, when it was spun off as an independent company. Embarq produced more than $6 billion in revenues annually, and had approximately 18,000 employees. It was based in Overland Park, Kansas.
GTE Midwest, Inc. was a GTE operating company formed in 1993 upon the split off of some GTE local telephone operations from GTE North. GTE Midwest served Missouri, Iowa, Nebraska, and Minnesota, and included the former operations of Contel in Iowa and Missouri.
Frontier Southwest Incorporated is a Frontier Communications operating company in Texas. At its peak, Frontier Southwest served Arkansas, Oklahoma, Texas, and New Mexico.
Verizon South, Inc. is a Verizon operating company providing local telephone services to portions of Virginia and North Carolina in the United States.
Frontier California, Inc. is a Frontier Communications-owned operating company providing telephone service in former Verizon regions. This included Southern California cities such as Long Beach, Seal Beach, Lakewood, Norwalk and Santa Monica.
Frontier Communications Parent, Inc. is an American telecommunications company. The company previously served primarily rural areas and smaller communities, but now also serves several large metropolitan markets.
Windstream Holdings, Inc., also doing business as Windstream Communications or Windstream, is a provider of voice and data network communications, and managed services, to businesses in the United States. The company also offers residential broadband, phone and digital streaming TV services to consumers within its coverage area. It is the ninth largest residential telephone provider in the country with service covering more than 8.1 million people in 21 states.
Centel Corporation was an American telecommunications company, with primary interests in providing basic telephone service, cellular phone service and cable television service.
ISA Communications Services, Inc. (ISACOMM) was a long-distance telephone company headquartered in Atlanta. It was the first telephone company to offer a virtual network service to corporations and the first to offer codec-based videoconferencing services. The company was also a pioneer in shared tenant services, by which a commercial landlord includes telecommunications services in its lease package.
Lumen Technologies, Inc. is an American telecommunications company headquartered in Monroe, Louisiana, that offers communications, network services, security, cloud solutions, voice, and managed services. The company is a member of the Fortune 500 and the S&P 500 index until 2023. Its communications services include local and long-distance voice, broadband, Multi-Protocol Label Switching (MPLS), private line, Ethernet, hosting, data integration, video, network, public access, Voice over Internet Protocol (VoIP), information technology, and other ancillary services. Lumen also serves global enterprise customers across North America, Latin America, EMEA, and Asia Pacific.
Windstream Kentucky East LLC is a Windstream operating company providing local telephone services to portions of Kentucky.
Windstream Kentucky West LLC is a Windstream operating company providing local telephone services to small portions of Kentucky.
