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 | BSNL |
|---|---|
| Other names | CellOne, MNTL, DOLPHIN, Mahanagar Telephone Nigam Limited, Bharat Sanchar Nigam Limited, महानगर टेलीफोन निगम लिमिटेड |
| Користувачі мобільної мережі | 121 470 000 мобільних користувачів (report dated 24/10/2025) |
| MCCMNC code | 40466 |
| Mobile network code (MNC) | 66 |
| Mobile country code (MCC) | 404 |
| Other MCCMNCs | 40434, 40438, 40451, 40453, 40454, 40455, 40457, 40458, 40459, 40462, 40464, 40468, 40469, 40471, 40472, 40473, 40474, 40475, 40476, 40477, 40479, 40480, 40481 |
| Mobile Number Portability (MNP) | Yes |
| Web | |
| Comments | BSNL and MNTL (DOLPHIN) merged in October 2019 |
