Prefissi in Bihar
| Prefisso▲ | Città↕ | Regione amministrativa↕ | Popolazione della città↕ | Paese/Regione | Fuso orario |
|---|---|---|---|---|---|
| 2342 | Islampur (Bihar) | Bihar | 31,875 | India | Asia/Kolkata |
| 240 | Aurangabad (Bihar) | Bihar | 95,929 | India | Asia/Kolkata |
| 2432 | Aurangabad (Bihar) | Bihar | 95,929 | India | Asia/Kolkata |
| 3481 | Islampur (Bihar) | Bihar | 31,875 | India | Asia/Kolkata |
| 3526 | Islampur (Bihar) | Bihar | 31,875 | India | Asia/Kolkata |
| 5182 | Khagaul | Bihar | 51,577 | India | Asia/Kolkata |
| 5496 | Ballia | Bihar | — | India | Asia/Kolkata |
| 5498 | Ballia | Bihar | — | India | Asia/Kolkata |
| 5523 | Mahārājgani | Bihar | 22,430 | India | Asia/Kolkata |
| 6111 | Hilsa | Bihar | 41,110 | India | Asia/Kolkata |
| 6114 | Jehanabad | Bihar | 96,387 | India | Asia/Kolkata |
| 6115 | Dinapore | Bihar | 152,940 | India | Asia/Kolkata |
| 612 | Patna | Bihar | 1,599,920 | India | Asia/Kolkata |
| 6135 | Bikramganj | Bihar | 42,626 | India | Asia/Kolkata |
| 6157 | Mairwa | Bihar | 20,163 | India | Asia/Kolkata |
| 6182 | Arrah | Bihar | 223,676 | India | Asia/Kolkata |
| 6183 | Buxar | Bihar | 96,120 | India | Asia/Kolkata |
| 6184 | Sasaram | Bihar | — | India | Asia/Kolkata |
| 6185 | Bikramganj | Bihar | 42,626 | India | Asia/Kolkata |
| 621 | Muzaffarpur | Bihar | 333,200 | India | Asia/Kolkata |
| 6222 | Sheohar | Bihar | 24,979 | India | Asia/Kolkata |
| 6226 | Sitamarhi | Bihar | 57,095 | India | Asia/Kolkata |
| 6228 | Janakpur Road | Bihar | 15,070 | India | Asia/Kolkata |
| 6243 | Begusarai | Bihar | 103,060 | India | Asia/Kolkata |
| 6244 | Khagaria | Bihar | 49,982 | India | Asia/Kolkata |
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