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Michigan Bell Telephone Company

AT&T Michigan Headquarters Building, Detroit
Company type	Subsidiary
Industry	Telecommunications
Founded	1904; 121 years ago (1904)
Headquarters	AT&T Michigan Headquarters Detroit, MI, United States
Products	Local telephone service
Number of employees	8,900
Website	http://www.att.com

Michigan Bell is the subsidiary of AT&T serving the state of Michigan. Following the Bell System divestiture on January 8, 1984, the company became a subsidiary of Ameritech, the Regional Bell operating company that served the midwestern United States. Ameritech was subsequently acquired by SBC Communications, which later changed its name to AT&T.

About

Michigan Bell was one of the 22 Local Exchange Carriers that were part of the original AT&T Bell System until the 1984 divestiture, after which Michigan Bell and four other Midwestern telephone companies became part of Ameritech, the midwestern Regional Holding Company. Ameritech was one of the seven original Bell Regional Holding Companies, or "Baby Bells".

By the early 1990s, Ameritech phased out state specific names such as Michigan Bell in favor of using the Ameritech name for marketing purposes. After Ameritech's acquisition by SBC Communications, the former Ameritech companies were briefly marketed as SBC Ameritech, as a transition to a unified "SBC" brand name in all 13 states in which SBC then did business. When this had been accomplished, in 2005, SBC Communications acquired AT&T. The newly merged company began marketing itself throughout the United States as the "new" AT&T. Michigan Bell is still the legal entity that provides telecommunications services in Michigan under the AT&T name. It is headquartered in Detroit.

v t e Bell System
Parent company American Telephone and Telegraph Company
Local telephone companies still extant Wholly owned Bell Telephone Company of Nevada The Bell Telephone Company of Pennsylvania The Chesapeake & Potomac Telephone Company The Chesapeake & Potomac Telephone Company of Maryland The Chesapeake & Potomac Telephone Company of West Virginia The Chesapeake & Potomac Telephone Company of Virginia Diamond State Telephone Illinois Bell Indiana Bell Michigan Bell Mountain Bell New England Telephone New Jersey Bell New York Telephone Northwestern Bell Ohio Bell Pacific Northwest Bell Pacific Telephone South Central Bell Southern Bell Southwestern Bell Wisconsin Telephone Partially owned Southern New England Telephone Cincinnati Bell
Other subsidiaries Manufacturing Western Electric Research Bell Labs Long distance Long Lines Wireless Advanced Mobile Phone Service Regional Bell companies Bell Canada (1880-1975)
Historical Commemorative Alexander Graham Bell National Historic Site Bell Boatyard Bell Homestead National Historic Site Bell Telephone Memorial Telephone Pioneers of America Spirit of Communication Defunct Bell Telephone Company New England Telephone and Telegraph Company International Bell Telephone Company The Bell Telephone Company of Canada Northern Electric Bell Telephone Manufacturing Company AT&T Technologies, Inc.
Related topics Divestiture Regional Bell Operating Company
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