We are the largest communications holding company in the world by revenue. Operating globally under the AT&T brand, we are:

Proud to offer one of the world's most advanced and powerful global backbone networks, carrying 16.8 petabytes of data traffic on an average business day to nearly every continent and country, with up to 99.999 percent reliability.
The nation's fastest 3G network serving 78.2 million customers and enabling them to travel and communicate seamlessly with the best worldwide wireless coverage — offering the most phones that work in the most countries. Offering voice coverage in more than 200 countries, data roaming in 170 and 3G in more than 70 countries.
The U.S. wireless carrier for the new iPhone 3G and the iPhone, which launched in June 2007 and revolutionized the industry.
The only U.S. national service provider to offer a 100 percent IP-based television service with U-verse TV. AT&T Advanced TV offers you a TV choice that's better than cable through AT&T U-verse TV and AT&T | DIRECTV.
The nation's largest provider of broadband — 16.7 million high speed Internet subscribers (as of 1Q09).
The nation's largest Wi-Fi provider, now offering customers access at more than 80,000 hot spots spanning countries around the world (including company-owned and third-party roaming locations) — with the addition of approximately 7,000 Starbucks locations.
One of the world's largest providers of IP-based communications services for businesses, with an extensive portfolio of Virtual Private Network (VPN), Voice over IP (VoIP) and other offerings — all backed by innovative security and customer support capabilities.
The leading U.S. provider of local and long distance voice services.