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AT&T Mobility, operating in the United States of America and covering the North America & Caribbean region, is a major mobile network provider. Identified by the Mobile Country Code (MCC) 310 and Mobile Network Code (MNC) 16, AT&T provides a wide range of cellular services, including voice, data, and messaging, to millions of subscribers across the nation. As one of the largest telecommunications companies in the US, it competes directly with Verizon and T-Mobile for market share, offering various plans and devices to suit different user needs. The network infrastructure behind AT&T Mobility is extensive, covering a significant portion of the country with 4G LTE and increasingly, 5G technology. This allows AT&T to offer advanced services such as high-speed mobile internet and support for emerging technologies like IoT (Internet of Things). Historically, AT&T has been a pioneer in the mobile industry and continues to innovate with its services. The MCC 310 is shared with other US mobile networks, but the MNC 16 specifically identifies the AT&T Mobility network within the United States.