Verizon
AT&T Corporation
Sprint Corporation
AT&T Mobility
T-Mobile US
Comcast
Bell System
BellSouth
Verizon (mobile network)
Bell Labs
Nortel
Lumen Technologies
WarnerMedia
DirecTV
Bell Telephone Company
View all
American multinational conglomerate
att.com
AT&T Inc. is an American multinational telecommunications holding company headquartered at Whitacre Tower in Downtown Dallas, Texas. Wikipedia
More on Yahoo Finance