| Città /paese o regione | Prefisso |
| 1. | Thimphu, Simtokha, Dechencholing, Taba, Kharsadrapchu, Basochu, Wangdue, Punakha, Lingshi, Gasa | 2 |
| 2. | Trashigang, Kanglung, Lhuntse, Tangmachu, Rangjung, Wamrong, Khaling, Mongar, Sakteng, Gelpoyshing, Trashi Yangtse, Tsenkharla | 4 |
| 3. | Trongsa, Jakar, Chumey, Zhemgang, Zhemgang, Tingtibi | 3 |