Thailand
| City/Region | City/Area code | Followed by |
| Bangkok | (0)29 | + 6 digits |
| Chanthaburi | (0)39 | + 6 digits |
| Chiang Mai | (0)53 | + 6 digits |
| Chon Buri | (0)38 | + 6 digits |
| Khon Kaen | (0)43 | + 6 digits |
| Lampang | (0)54 | + 6 digits |
| Nahkon Sawan | (0)56 | + 6 digits |
| Nakhon Pathom | (0)34 | + 6 digits |
| Nakhon Ratchasima | (0)44 | + 6 digits |
| Phitsanulok | (0)55 | + 6 digits |
| Phuket | (0)76 | + 6 digits |
| Pra Nakhon Sri Ayutthaya | (0)35 | + 6 digits |
| Prachin Buri | (0)37 | + 6 digits |
| Ratchaburi | (0)32 | + 6 digits |
| Saraburi | (0)36 | + 6 digits |
| Songkhla | (0)74 | + 6 digits |
| Surat Thani | (0)77 | + 6 digits |
| Trang | (0)75 | + 6 digits |
| Ubon Ratchathani | (0)45 | + 6 digits |
| Udon Thani | (0)42 | + 6 digits |
| Yala | (0)73 | + 6 digits |