The Area Codes of Mongolia:
| City/Town or Region | Area code | |
|---|---|---|
| 1. | Khairkhan | 3351 (+976 3351) |
| 2. | Khairkhandulaan | 3257 (+976 3257) |
| 3. | Khalhgol | 5849 (+976 5849) |
| 4. | Khaliun | 4852 (+976 4852) |
| 5. | Khan khongor | 5352 (+976 5352) |
| 6. | Khanbogd | 5351 (+976 5351) |
| 7. | Khangai | 3352 (+976 3352) |
| 8. | Khangal | 3454 (+976 3454) |
| 9. | Khankh | 3856 (+976 3856) |
| 10. | Kharkhorin | 3258 (+976 3258) |
| 11. | Khashaat | 3353 (+976 3353) |
| 12. | Khatanbulag | 5252 (+976 5252) |
| 13. | Khatgal | 3857 (+976 3857) |
| 14. | Khishig-Öndör | 3455 (+976 3455) |
| 15. | Khökh morit | 4853 (+976 4853) |
| 16. | Khölönbuir | 5851 (+976 5851) |
| 17. | Khongor (Salkhit) | 3742 (+976 3742) |
| 18. | Khotont | 3354 (+976 3354) |
| 19. | Khovd | 4557 (+976 4557) |
| 20. | Khovd city (Jargalant sum) | 432 (+976 432) |
| 21. | Khovd sum | 4354 (+976 4354) |
| 22. | Khövsgöl | 5253 (+976 5253) |
| 23. | Khüder | 3654 (+976 3654) |
| 24. | Khujirt | 3259 (+976 3259) |
| 25. | Khuld | 5953 (+976 5953) |
| 26. | Khüreemaral | 4458 (+976 4458) |
| 27. | Khürmen | 5353 (+976 5353) |
| 28. | Khushaat | 3655 (+976 3655) |
| 29. | Khutag-Öndör | 3456 (+976 3456) |
| 30. | Khyargas | 4558 (+976 4558) |