AT&T Overview


AT&T is bringing it all together for their customers, from revolutionary smartphones to next-generation TV services and sophisticated solutions for multi-national businesses.

AT&T is recognized as one of the leading worldwide providers of IP-based communications services to businesses. They also have the nation’s fastest mobile broadband network and the largest international coverage of any U.S. wireless carrier, offering the most phones that work in the most countries; the largest Wi-Fi network in the United States based on branded and operated hotspots; and the largest number of total broadband connections in the United States.

Key Facts

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

  • Proud to offer one of the world’s most advanced and powerful global backbone networks, carrying 20.8 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 mobile broadband network serving millions of 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 220+ countries, data roaming in 200+ countries and 3G in more than 130 countries.
  • The nation’s largest provider of broadband—more than 17.6 million total broadband connections.
  • Managing the nation’s largest Wi-Fi network with more than 23,000 AT&T Wi-Fi Hot Spots in the United States, and Premier Membership customers have access to more than 135,000 hot spots around the globe through roaming agreements.
  • 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.
  • Publishers of 1,250 AT&T Real Yellow Pages titles and distributors of more than 150 million directories annually.
  • A global leader in delivering a full portfolio of end-to-end reliable and highly secure network, voice, data and IP solutions to wholesale customers, and its service portfolio has been widely regarded by third parties as industry-leading.
  • The parent of, a leading Internet Yellow Pages network that, when combined with AT&T Real Yellow Pages, receives more than 5 billion consumer searches a year.
  • The leading U.S. provider of local and long distance voice services.


The AT&T network includes extensive wireless and wired access capabilities, as well as one of the world’s most advanced and powerful IP backbones.

The AT&T global backbone network carries 20.8 petabytes of data traffic on an average business day.

AT&T’s backbone network carries a full range of IP-based services, including wireless data, business video, data and voice services, private line and wavelength traffic, as well as IP-based residential services and Internet access for AT&T’s more than 17.6 million total broadband customers.

AT&T’s network also incorporates Multiprotocol Label Switching (MPLS), which supports a full range of applications over a single IP network infrastructure with the highest levels of service quality.

To stay ahead of the ever-increasing demand for online video, photos, music and IP-based business applications, AT&T recently switched on the nation’s first coast-to-coast IP/MPLS network using new-generation routing technology that carries data at 40 Gbps. More than 75 percent of the IP traffic carried over the company’s backbone network rides on this new-generation platform.

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