There are cases when mobile network codes are occupied not by mobile carriers, but government structures (military, railway, landline phone authorities), fixed and broadband internet providers, scientific organisations, etc. Some MCCMNCs belong to obsolete legal entities, acquired by other market players or went to bankruptcy, but codes are kept for a certain period for legacy purposes.
| Brand name | AT&T |
|---|---|
| Other names | AT&T Mobility, AT&T Wireless, Cricket, Cricket Wireless, Consumer Cellular, Centennial, Centennial Wireless, Highland Cellular, Cingular, Edge Wireless, Plateau Wireless, BellSouth Mobility, Aio Wireless, Pacific Bell Wireless, Cingular Orange, Farmers Wireless, Cingular Blue, Dobson Cellular, Northstar, Cellular One, NPI Wireless, Caprock Cellular, PACE, XIT Cellular, Easterbrooke Cellular, Texas RSA 1, Wisconsin RSA 7, Siouxland, Long Lines Wireless, Pacific Telesis, Fuego Wireless, Allied Wireless, AWCC, FirstNet |
| Mobile users | 165 900 000 mobile users (report dated 25/12/2024) |
| MCCMNC code | 310170 |
| Mobile network code (MNC) | 170 |
| Mobile country code (MCC) | 310 |
| Other MCCMNCs | 310030, 310070, 310080, 310090, 310150, 310280, 310380, 310410, 310560, 310670, 310680, 310950, 311070, 311090, 311180, 311190, 312090, 312680, 313210 |
| Mobile Number Portability (MNP) | Yes |
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