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Vietnam mobile prefixes
| No. | Prefix | Mobile provider | No. | Prefix | Mobile provider |
| 1 | 96 | EVN | 11 | 167 | Viettel |
| 2 | 91 | GPC Vinaphone | 12 | 168 | Viettel |
| 3 | 94 | GPC Vinaphone | 13 | 169 | Viettel |
| 4 | 123 | GPC Vinaphone | 14 | 90 | VMS Mobifone |
| 5 | 125 | GPC Vinaphone | 15 | 93 | VMS Mobifone |
| 6 | 92 | HT Mobile | 16 | 121 | VMS Mobifone |
| 7 | 95 | SPT S-Fone | 17 | 122 | VMS Mobifone |
| 8 | 97 | Viettel | 18 | 126 | VMS Mobifone |
| 9 | 98 | Viettel | 19 | 99 | VSAT |
| 10 | 166 | Viettel | 20 | 199 | Beeline |