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.
The Carlyle Group Inc. is an American multinational private equity, alternative asset management and financial services corporation based in the United States with $426 billion of assets under management. It specializes in private equity, real assets, and private credit. It is one of the largest mega-funds in the world. In 2015, Carlyle was the world's largest private equity firm by capital raised over the previous five years, according to the PEI 300 index. In the 2024 ranking however, it had slipped to sixth place.
US West, Inc., doing business as U S West, was one of seven Regional Bell Operating Companies, created in 1983 under the Modification of Final Judgement, a case related to the antitrust breakup of AT&T. US West provided local telephone and intraLATA long-distance services, data transmission services, cable television services, wireless communications services and related telecommunications products to defined areas in Arizona, Colorado, Idaho, Iowa, Minnesota, Montana, Nebraska, New Mexico, North Dakota, Oregon, South Dakota, Utah, Washington, and Wyoming. US West was a public company traded on the New York Stock Exchange under the ticker symbol "USW" with headquarters at 1801 California Street in Denver, Colorado.
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.
Verizon South, Inc. is a Verizon operating company providing local telephone services to portions of Virginia and North Carolina in the United States.
Qwest Corporation is a Regional Bell Operating Company owned by Lumen Technologies. It was formerly named U S WEST Communications, Inc. from 1991 to 2000, and also formerly named Mountain States Telephone and Telegraph Company, known as Mountain Bell from 1911 to 1991. It includes the former operations of Malheur Bell, Northwestern Bell and Pacific Northwest Bell as well.
YP Holdings, now a wholly owned subsidiary of DexYP, is the American parent company for YP LLC. Its products include printed telephone directories, yp.com and YP app. YP offers local search, display ads and direct marketing. On July 31, 2012, YP was included in PaidContent50's list of "the world's most successful digital media companies" based on 2011 digital ad revenue.
Dex One Corporation was an American marketing company providing online, mobile and print search marketing via their DexKnows.com website, print yellow pages directories and pay-per-click ad networks in the U.S.
YP Midwest Publishing LLC., originally Ameritech Publishing, Inc., was formed in 1983 during the Bell System Divestiture. It combined the former directory operations of Illinois Bell, Indiana Bell, Michigan Bell, Ohio Bell and Wisconsin Telephone. Ameritech Publishing published telephone directories in Indiana, Ohio, Michigan, and Wisconsin. Directories in Illinois were made in a joint venture with R. H. Donnelley.
Welsh, Carson, Anderson & Stowe (WCAS), also referred to as Welsh Carson, is a private equity firm. WCAS was formed in 1979 and focuses on investing in two growth industries, technology and healthcare, primarily in the United States. WCAS has a current portfolio of approximately 30 companies and has organized 17 limited partnerships with total capital of over $27 billion, consisting of 13 equity partnerships and four subordinated debt partnerships. WCAS is currently investing equity funds, including WCAS XII, L.P. and WCAS XIII, L.P.
Comcast MO Group, Inc. was created by US WEST Inc., one of the original Baby Bells Regional Bell Operating Companies, acquisition of Boston-based Continental Cable and combined with its previously acquired Atlanta-based Wometco/GTC. Wometco/GTC adopted the MediaOne name a year earlier. Media One Group was acquired in 2000 by AT&T Broadband, which was subsequently acquired by Comcast in 2002.
Private equity in the 2000s represents one of the major growth periods in the history of private equity and venture capital. Within the broader private equity industry, two distinct sub-industries, leveraged buyouts and venture capital expanded along parallel and interrelated tracks.
Qwest Communications International, Inc. was a United States telecommunications carrier. Qwest provided local service in 14 western and midwestern U.S. states: Arizona, Colorado, Idaho, Iowa, Minnesota, Montana, Nebraska, New Mexico, North Dakota, Oregon, South Dakota, Texas, Utah, Washington, and Wyoming.
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.
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 has been on the S&P 500 index since 1999.
AT&T Corporation, commonly referred to as AT&T, an abbreviation for its former name, the American Telephone and Telegraph Company, was an American telecommunications company that provided voice, video, data, and Internet telecommunications and professional services to businesses, consumers, and government agencies.
The history of AT&T dates back to the invention of the telephone. The Bell Telephone Company was established in 1877 by Alexander Graham Bell, who obtained the first US patent for the telephone, and his father-in-law, Gardiner Greene Hubbard. Bell and Hubbard also established American Telephone and Telegraph Company in 1885, which acquired the Bell Telephone Company and became the primary telephone company in the United States. This company maintained an effective monopoly on local telephone service in the United States until anti-trust regulators agreed to allow AT&T to retain Western Electric and enter general trades computer manufacture and sales in return for its offer to split the Bell System by divesting itself of ownership of the Bell Operating Companies in 1982.
