The Area Codes of Vietnam:
| City/Town or Region | Area code | |
|---|---|---|
| 1. | Hà Giang | 0219 (+84219) |
| 2. | Hà Nam | 0351 (+84351) |
| 3. | Hà Tĩnh | 039 (+8439) |
| 4. | Hải Dương | 0320 (+84320) |
| 5. | Hai Phong city | 031 (+8431) |
| 6. | Hanoi city | 04 (+844) |
| 7. | Hậu Giang | 0711 (+84711) |
| 8. | Ho Chi Minh City | 082 (+8482) |
| 9. | Ho Chi Minh City | 083 (+8483) |
| 10. | Ho Chi Minh City | 084 (+8484) |
| 11. | Ho Chi Minh City | 085 (+8485) |
| 12. | Ho Chi Minh City | 0862 (+84862) |
| 13. | Ho Chi Minh City | 0863 (+84863) |
| 14. | Ho Chi Minh City | 0866 (+84866) |
| 15. | Ho Chi Minh City | 0871 (+84871) |
| 16. | Ho Chi Minh City | 0873 (+84873) |
| 17. | Hòa Bình | 0218 (+84218) |
| 18. | Hưng Yên | 0321 (+84321) |