The Area Codes of Thailand:
The 10 most frequently searched cities / regions or area codes:
| City/Town or Region | Area code |
| 1. | Amnat Charoen, Si Sa Ket, Ubon Ratchathani, Yasothon | 045 (+6645) |
| 2. | Ang Thong, Phra Nakhon Si Ayutthaya, Suphan Buri | 035 (+6635) |
| 3. | Bangkok (Krung Thep Maha Nakhon), Nonthaburi, Pathum Thani, Samut Prakan, Phutthamonthon | 02 (+662) |
| 4. | Bueng Kan, Loei, Mukdahan, Nakhon Phanom, Nong Bua Lamphu, Nong Khai, Sakon Nakhon, Udon Thani | 042 (+6642) |
| 5. | Buri Ram, Chaiyaphum, Nakhon Ratchasima, Surin | 044 (+6644) |
| 6. | Chachoengsao, Chon Buri, Rayong | 038 (+6638) |
| 7. | Chai Nat, Nakhon Sawan, Phetchabun, Phichit, Uthai Thani | 056 (+6656) |
| 8. | Chanthaburi, Trat | 039 (+6639) |
| 9. | Chiang Mai, Chiang Rai, Lamphun, Mae Hong Son | 052 (+6652) |
| 10. | Chiang Mai, Chiang Rai, Lamphun, Mae Hong Son | 053 (+6653) |