Note: Dial ‘0’ or +91 before the given STD code
| City | Area/Town | STD Code |
| JAMSHEDPUR | SARAIKELA (ADSTYAPUR) | 6597 |
| JAMSHEDPUR | NOAMUNDI | 6596 |
| JAMSHEDPUR | BAHARAGORA | 6594 |
| JAMSHEDPUR | MANOHARPUR | 6593 |
| JAMSHEDPUR | CHANDIL | 6591 |
| JAMSHEDPUR | JHINKPANI | 6589 |
| JAMSHEDPUR | JAGARNATHPUR | 6588 |
| JAMSHEDPUR | CHAKARDHARPUR | 6587 |
| DALTONGANJ | CHAINPUR | 6586 |
| JAMSHEDPUR | GHATSILA | 6585 |
| DALTONGANJ | BISHRAMPUR | 6584 |
| JAMSHEDPUR | KHARSAWA | 6583 |
| JAMSHEDPUR | CHAIBASA | 6582 |
| DALTONGANJ | BHANDARIA | 6581 |
| DALTONGANJ | GARU | 6569 |
| DALTONGANJ | BALUMATH | 6568 |
| DALTONGANJ | BARWADIH | 6567 |
| DALTONGANJ | JAPLA | 6566 |
| DALTONGANJ | LATEHAR | 6565 |
| DALTONGANJ | NAGARUTARI | 6564 |
| DALTONGANJ | BHAWANATHPUR | 6563 |
| DALTONGANJ | DALTONGANJ | 6562 |
| DALTONGANJ | GARHWA | 6561 |
| DALTONGANJ | PATAN | 6560 |
| HAZARIBAGH | SIMARIA | 6559 |
| HAZARIBAGH | DUMRI(ISRIBAZAR) | 6558 |
| HAZARIBAGH | BAGODAR | 6557 |
| HAZARIBAGH | TISRI | 6556 |
| HAZARIBAGH | RAJDHANWAR | 6554 |
| HAZARIBAGH | RAMGARH | 6553 |
| HAZARIBAGH | BARKAGAON | 6551 |
| HAZARIBAGH | HUNTERGANJ | 6550 |
| DHANBAD | BERMO | 6549 |
| HAZARIBAGH | ICHAK | 6548 |
| HAZARIBAGH | CHAVPARAN | 6547 |
| HAZARIBAGH | HAZARIBAGH | 6546 |
| HAZARIBAGH | MANDU | 6545 |
| DHANBAD | GOMIA | 6544 |
| HAZARIBAGH | BARHI | 6543 |
| DHANBAD | BOKARO | 6542 |
| HAZARIBAGH | CHATRA | 6541 |
| DHANBAD | GOVINDPUR | 6540 |
| RANCHI | BOLWA | 6539 |
| RANCHI | TORPA | 6538 |
| RANCHI | PALKOT | 6536 |
| RANCHI | CHAINPUR | 6535 |
| HAZARIBAGH | JHUMARITALAIYA | 6534 |
| RANCHI | BASIA | 6533 |
| HAZARIBAGH | GIRIDIH | 6532 |
| RANCHI | MANDAR | 6531 |
| RANCHI | BUNDU | 6530 |
| RANCHI | ITKI | 6529 |
| RANCHI | KHUNTI | 6528 |
| RANCHI | KOLEBIRA | 6527 |
| RANCHI | LOHARDAGA | 6526 |
| RANCHI | SIMDEGA | 6525 |
| RANCHI | GUMLA | 6524 |
| RANCHI | GHAGHRA | 6523 |
| RANCHI | MURI | 6522 |
| SAHARSA | UDAKISHANGANJ | 6479 |
| SAHARSA | SAHARSA | 6478 |
| SAHARSA | TRIVENIGANJ | 6477 |
| SAHARSA | MADHEPURA | 6476 |
| SAHARSA | S.BAKHTIARPUR | 6475 |
| SAHARSA | SUPAUL | 6473 |
| SAHARSA | BIRPUR | 6471 |
| KATIHAR | BANMANKHI | 6467 |
| KATIHAR | KISHANGANJ | 6466 |
| KATIHAR | DHAMDAHA | 6462 |
| KATIHAR | RANIGANJ | 6461 |
| KATIHAR | THAKURGANJ | 6459 |
| KATIHAR | KORHA | 6457 |
| KATIHAR | FORBESGANJ | 6455 |
| KATIHAR | PURNEA | 6454 |
| KATIHAR | ARARIA | 6453 |
| KATIHAR | KATIHAR | 6452 |
| KATIHAR | BARSOI | 6451 |
| DEOGHAR (DUMKA) | MADHUPUR | 6438 |
| DEOGHAR (DUMKA) | MAHAGAMA | 6437 |
| DEOGHAR (DUMKA) | SAHIBGANJ | 6436 |
| DEOGHAR (DUMKA) | PAKUR | 6435 |
| DEOGHAR (DUMKA) | DUMKA | 6434 |
| DEOGHAR (DUMKA) | JAMTARA | 6433 |
| DEOGHAR (DUMKA) | DEOGHAR | 6432 |
| DEOGHAR (DUMKA) | JHARMUNDI | 6431 |
| BHAGALPUR | KAHALGAON | 6429 |
| DEOGHAR (DUMKA) | NALA | 6428 |
| DEOGHAR (DUMKA) | KATHIKUND | 6427 |
| DEOGHAR (DUMKA) | RAJMAHAL | 6426 |
| BHAGALPUR | KATORIA | 6425 |
| BHAGALPUR | BANKA | 6424 |
| DEOGHAR (DUMKA) | MAHESHPUR RAJ | 6423 |
| DEOGHAR (DUMKA) | GODDA | 6422 |
| BHAGALPUR | NAUGACHIA | 6421 |
| BHAGALPUR | AMARPUR | 6420 |
| MONGHYR | JHAJHA | 6349 |
| MONGHYR | MALLEHPUR | 6348 |
| MONGHYR | CHAKAI | 6347 |
| MONGHYR | LAKHISARAI | 6346 |
| MONGHYR | JAMUI | 6345 |
| MONGHYR | MONGHYR | 6344 |
| MONGHYR | H.KHARAGPUR | 6342 |
| MONGHYR | SEIKHPURA | 6341 |
| GAYA | ARWAL | 6337 |
| GAYA | RAJAULI | 6336 |
| GAYA | NABINAGAR | 6332 |
| GAYA | IMAMGANJ | 6331 |
| GAYA | DAUDNAGAR | 6328 |
| GAYA | RAFIGANJ | 6327 |
| GAYA | SHERGHATI | 6326 |
| GAYA | PAKRIBARWAN | 6325 |
| GAYA | NAWADA | 6324 |
| ARRAH | DUMRAON | 6323 |
| GAYA | WAZIRGANJ | 6322 |
| DARBHANGA | BARAUNI | 6279 |
| DARBHANGA | DALSINGHSARAI | 6278 |
| DARBHANGA | PHULPARAS | 6277 |
| DARBHANGA | MADHUBANI | 6276 |
| DARBHANGA | ROSERA | 6275 |
| DARBHANGA | SAMASTIPUR | 6274 |
| DARBHANGA | JHAJHARPUR | 6273 |
| DARBHANGA | DARBHANGA | 6272 |
| DARBHANGA | BENIPATTI | 6271 |
| MOTIHARI | PAKRIDAYAL | 6259 |
| MOTIHARI | ARERAJ | 6258 |
| MOTIHARI | BARACHAKIA | 6257 |
| MOTIHARI | RAMNAGAR | 6256 |
| MOTIHARI | RAXAUL | 6255 |
| MOTIHARI | BETTIAH | 6254 |
| MOTIHARI | NARKATIAGANJ | 6253 |
| MOTIHARI | MOTIHARI | 6252 |
| MOTIHARI | BAGAHA | 6251 |
| MOTIHARI | DHAKA | 6250 |
| DARBHANGA | SINGHWARA | 6247 |
| DARBHANGA | JAINAGAR | 6246 |
| DARBHANGA | GOGRI | 6245 |
| DARBHANGA | KHAGARIA | 6244 |
| DARBHANGA | BEGUSARAI | 6243 |
| DARBHANGA | BENIPUR | 6242 |
| MUZAFFARPUR | BIDUPUR | 6229 |
| MUZAFFARPUR | PUPRI | 6228 |
| MUZAFFARPUR | MAHUA | 6227 |
| MUZAFFARPUR | SITAMARHI | 6226 |
| MUZAFFARPUR | HAJIPUR | 6224 |
| MUZAFFARPUR | MOTIPUR | 6223 |
| MUZAFFARPUR | SHEOHAR | 6222 |
| SASARAM | BHABHUA | 6189 |
| SASARAM | ROHTAS | 6188 |
| SASARAM | MOHANIA | 6187 |
| GAYA | AURANGABAD | 6186 |
| SASARAM | BIKRAMGANJ | 6185 |
| SASARAM | SASARAM | 6184 |
| ARRAH | BUXAR | 6183 |
| ARRAH | ARRAH | 6182 |
| ARRAH | PIRO | 6181 |
| SASARAM | ADHAURA | 6180 |
| CHAPRA | MASRAKH | 6159 |
| CHAPRA | SONEPUR | 6158 |
| CHAPRA | MAIRWA | 6157 |
| CHAPRA | GOPALGANJ | 6156 |
| CHAPRA | EKMA | 6155 |
| CHAPRA | SIWAN | 6154 |
| CHAPRA | MAHARAJGANJ | 6153 |
| CHAPRA | CHAPRA | 6152 |
| CHAPRA | SIDHAWALIA | 6151 |
| CHAPRA | HATHUA | 6150 |
| PATNA | BIKRAM | 6135 |
| PATNA | BARH | 6132 |
| PATNA | DANAPUR | 6115 |
| GAYA | JAHANABAD | 6114 |
| PATNA | BIHARSHARIF | 6112 |
| PATNA | HILSA | 6111 |
| JAMSHEDPUR | JAMSHEDPUR | 657 |
| RANCHI | RANCHI | 651 |
| BHAGALPUR | BHAGALPUR | 641 |
| GAYA | GAYA | 631 |
| MUZAFFARPUR | MUZAFFARPUR | 621 |
| PATNA | PATNA | 612 |
| DHANBAD | DHANBAD | 326 |