The Area Codes of Mongolia:
| City/Town or Region | Area code | |
|---|---|---|
| 1. | Chandmani | 4356 (+976 4356) |
| 2. | Chandmani (Zeegt) | 4856 (+976 4856) |
| 3. | Chandmani-Öndör | 3863 (+976 3863) |
| 4. | Choibalsan | 5853 (+976 5853) |
| 5. | Choibalsan city | 582 (+976 582) |
| 6. | Choir city (Sümber sum) | 542 (+976 542) |
| 7. | Chuluunkhoroot | 5854 (+976 5854) |
| 8. | Chuluut | 3358 (+976 3358) |