AT&T

AT&T Coverage Map

View real-time coverage data for AT&T across the United States. Our coverage maps are based on millions of crowdsourced speed tests from users like you and allow you to see how well AT&T performs with granular detail.

AT&T Network Details

Explore the technical foundation of AT&T's network, including supported wireless technologies, spectrum frequencies, and available bands. This detailed breakdown highlights the apabilities that power coverage, capacity, and performance, along with the specific spectrum ranges used to deliver service across different areas. Use this information to understand device compatibility, network reach, and how AT&T's infrastructure supports real-world speeds and reliability.

AT&T MCC-MNC Codes

Mobile Country Code (MCC) and Mobile Network Code (MNC) are unique identifiers assigned to mobile network operators. Together, they form the Public Land Mobile Network (PLMN) identifier that your phone uses to identify and connect to AT&T's network. These codes are broadcast by cell towers and are used for network selection, roaming agreements, and regulatory compliance. This list contains the codes used by AT&T that are currently in active use.

AT&T Autonomous System Numbers (ASN)

Autonomous Systems are groups of networks that participate in global internet routing. They are typically managed by companies, organizations, governments, or other entities. Each autonomous system is assigned a unique number that identifies them called an Autonomous System Number (ASN). When your phone connects to the internet, it's assigned an IP address that is managed by the autonomous system. The autonomous system then determines how that traffic is routed to and from the internet. Below are the autonomous systems used by AT&T for its cellular network.

MVNOs using AT&T

These mobile virtual network operators (MVNOs) rely on AT&T's network for coverage in the United States. Click on an MVNO to see more information.

About AT&T

AT&T is a major mobile network operator in the United States. Operating its own cellular network infrastructure including cell towers, spectrum licenses, and core network equipment. As an MNO, AT&T provides direct network access and is responsible for network quality and coverage expansion. It is owned by AT&T Inc.. With approximately 119 million subscribers as of 2025, AT&T is considered a major carrier in the United States.

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