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.
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 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.
Frontier Communications is an American telecommunications company. The company previously served primarily rural areas and smaller communities, but now also serves several large metropolitan markets. In April 2021, the company was renamed as Frontier Communications Parent.
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 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.
Iowa Telecommunications Services, Inc., commonly known as Iowa Telecom, provided local telephone service to former GTE customers in the U.S. states of Iowa, Missouri, Illinois, and Minnesota. Iowa Telecom was founded in 1999 as a partnership between Iowa Network Services and ING Barings. It acquired the assets of GTE Midwest, which served Iowa following Bell Atlantic's purchase of GTE. It had 257,700 access lines and served 435 communities in Iowa.
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 S&P 500 index and the Fortune 500. 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.
ATN International, Inc. (ATN) formerly known as Atlantic Tele-Network, Inc., is a publicly traded telecommunications company that is headquartered in Beverly, Massachusetts. It operates digital wireless, wireline, and both terrestrial and submarine fiber optic networks, serving markets that are geographically separated and technically challenging, such as the plains, deserts, and mountainous areas of the United States.
Citizens Telecommunications Company of West Virginia is the local exchange carrier of telephone service in some regions in West Virginia.
Navajo Communications Company, Inc. is the operating company of Frontier Communications that provides telephone services in Arizona to the Navajo people.
Southwestern Bell Telephone Company is a wholly owned subsidiary of AT&T. It does business as other d/b/a names in its operating region, which includes Arkansas, Kansas, Missouri, Oklahoma, Texas, and portions of Illinois.
Embarq Missouri, Inc. is a telephone operating company providing local telephone services in Kansas and Missouri owned by CenturyLink.
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.
Windstream North Carolina LLC is a telephone company operating in the state of North Carolina.