The Area Codes of Indonesia:
| City/Town or Region | Area code |
1. | Balikpapan, North Penajam Paser | 0542 |
2. | Banda Aceh, Aceh Besar | 0651 |
3. | Banda Naira | 0910 |
4. | Bandar Lampung | 0721 |
5. | Bandung, Cimahi | 022 |
6. | Banggai | 0461 |
7. | Banggai Island | 0462 |
8. | Bangka, Pangkal Pinang | 0717 |
9. | Banjar, Ciamis, Tasikmalaya | 0265 |
10. | Banjarmasin, Banjar, Banjarbaru, Barito Kuala | 0511 |
11. | Banjarnegara, Wonosobo | 0286 |
12. | Bantaeng, Bulukumba | 0413 |
13. | Banyumas, Purbalingga | 0281 |
14. | Banyuwangi | 0333 |
15. | Barru | 0427 |
16. | Batam | 0778 |
17. | Batanghari | 0743 |
18. | Bawean | 0325 |
19. | Bekasi, Depok | 021 |
20. | Belinyu | 0715 |
21. | Belitung | 0719 |
22. | Belu | 0389 |
23. | Bengkalis | 0763 |
24. | Bengkalis | 0766 |
25. | Bengkulu, Seluma | 0736 |
26. | Berau | 0554 |
27. | Biak | 0981 |
28. | Bima | 0374 |
29. | Bireuen | 0644 |
30. | Bitung | 0438 |
31. | Blitar | 0342 |
32. | Blora | 0296 |
33. | Bogor city | 0251 |
34. | Bojonegoro | 0353 |
35. | Bolaang Mongondow | 0434 |
36. | Bondowoso | 0332 |
37. | Bone | 0481 |
38. | Bontang | 0548 |
39. | Botawa / Serui | 0983 |
40. | Boyolali | 0276 |
41. | Buleleng | 0362 |
42. | Bulungan, Tana Tidung | 0552 |
43. | Bumiayu | 0289 |
44. | Bungo, Rimbo Bujang | 0747 |
45. | Buton | 0402 |