AT&amp;T

AT&amp;T Inc. (used to be called American Telegraph &amp; Telephone) is the largest provider of both local and long distance fixed telephone services and Internet access in the United States with 71.4 million customers. It is the second largest wireless service provider in the country.
AT&amp;T has been publicly traded on the New York Stock Exchange since 1984. It was one of the 30 companies that made up the Dow Jones Industrial Average until 2013, when it was replaced by Apple Inc.