AT&T provides telecommunications services to consumers in the U.S. and Latin America and to businesses worldwide. SBC acquired the old AT&T in November 2005 and took the AT&T name shortly thereafter. The combined company acquired BellSouth Corp. in December 2006 and spun out its Directories business in May 2012. The company acquired Mexican wireless telecoms Iusacell and Nextel Mexico in January 2015.

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The wireless business contributes about two thirds of AT&T’s revenue. The firm is the third-largest US wireless carrier, connecting 72 million postpaid and 17 million prepaid phone customers. Fixed-line enterprise services, which account for about 16% of revenue, include internet access, private networking, security, voice, and wholesale network capacity. Residential fixed-line services, about 11% of revenue, primarily consist of broadband internet access, serving 14 million customers. AT&T also has a sizable presence in Mexico, with 22 million customers, but this business only accounts for 3% of revenue. The firm still holds a 70% equity stake in satellite television provider DirecTV but does not consolidate this business in its financial statements.

The wireless business contributes about two thirds of AT&T’s revenue following the spinoff of Warner Media. The firm is the third-largest U.S. wireless carrier, connecting 71 million postpaid and 17 million prepaid phone customers. Fixed-line enterprise services, which account for about 17% of revenue, include internet access, private networking, security, voice, and wholesale network capacity. Residential fixed-line services, about 11% of revenue, primarily consist of broadband internet access. AT&T also has a sizable presence in Mexico, serving 22 million customers, but this business only accounts for 3% of revenue. The firm still holds a 70% equity stake in satellite television provider DirecTV but does not consolidate this business in its financial statements.