United States v. AT&T, 552 F.Supp. 131 (1982), was a ruling of the United States District Court for the District of Columbia,[1] that led to the 1984 Bell System divestiture, and the breakup of the old AT&T natural monopoly into seven regional Bell operating companies and a much smaller new version of AT&T.
Background
Since the Kingsbury Commitment in 1913, AT&T was permitted by the United States government, first via the Interstate Commerce Commission and then via the Federal Communications Commission (FCC), to become the natural monopoly telephone service provider in the country (known as the Bell System) in return for commitments to universal service and basic connectivity for all consumers.[2]