This is the telephone area code for Udon Thani and surrounding areas in Northeastern Thailand (Isan).
How to Call Udon Thani from Overseas
- Dial your country's exit code (International Access Code)
- Dial 66 (Thailand country code)
- Dial the area code (42 - without the leading 0)
- Dial the local phone number
Example: Calling Udon Thani from United States
011 66 42 212 3456
Where:
011 = USA exit code
66 = Thailand country code
42 = Udon Thani area code (042 without the 0)
212 3456 = Local Udon Thani phone number
Quick Facts
Udon Thani Area Code Coverage
The 042 area code covers Udon Thani province and nearby Isan communities:
Udon Thani City
Nong Prue, Mak Khaeng, Central Market area
Nong Han
Lake district and surrounding villages
Ban Dung
Western Udon Thani, agricultural zone
Phibun Rak
Eastern district near Lao border
Prachaksinlapakhom
Southeastern rural commune
Greater Northeast
Nong Khai (Note: Nong Khai uses 042 partially; some areas use 043), Sangkhom
Major Thailand Area Codes
Common Exit Codes for Calling Thailand
When calling Udon Thani from these countries, use these exit codes:
United States
011
Australia
0011
European Union
00
Japan
010
China
00
Canada
011