+66 Country Code for Thailand
Use +66 when calling Thailand from abroad. International calls normally include the country code, an area or city code, and the local number.
Country code
+66
ISO code
TH
Thailand phone number format
Thailand uses the international calling code +66. Most full numbers include the country code, an area or destination code, and the local subscriber number.
Standard international format
Country code
+66
Area or city code
This part identifies a region, city, or carrier depending on the country.
Local number
This is the subscriber number you dial after the prefix information.
Mobile numbers
Mobile numbers in Thailand may use a different prefix or length than landlines, so it helps to confirm the full format before calling.
Landline numbers
Landline numbers in Thailand often include an area code that points to a city or region.
Example numbers
+66 81 234 5678
Example mobile number for Thailand
+66 XX XXXX XXXX
Example landline format for Thailand
Postal code format
Thailand commonly uses the postal code format #####.
Important notes
- • Always start with +66 when placing an international call to Thailand.
- • Double-check whether the local number already includes any regional prefix before dialing.
- • Spacing varies by provider, but the digits themselves must stay in the right order.
- • If a call fails, verify the exit code, country code, and local number format.
How to call Thailand
To call Thailand from abroad, enter your international exit code, then +66, then the full local number.
Dial your international exit code
This tells your carrier you are placing an international call.
Common exit codes
- United States & Canada: 011
- Most of Europe: 00
- Australia: 0011
- Japan: 010
Dial Thailand's country code
After the exit code, enter +66 for Thailand. If a form asks for digits only, use 66.
66
Add the area code and local number
Enter the rest of the number exactly as it is written for Thailand.
Important: Some published numbers include a trunk prefix used only for domestic calls. Leave it out if the number should be dialed in full international format after +66.
Place the call
Review the full sequence, then start the call from your mobile, landline, or VoIP app.
Complete example
+66 81 234 5678
Exit code reference
| Region | Exit code | Example |
|---|---|---|
| United States & Canada | 011 | 011 66 XXX XXXX |
| Most of Europe | 00 | 00 66 XXX XXXX |
| Australia | 0011 | 0011 66 XXX XXXX |
| Japan | 010 | 010 66 XXX XXXX |
Tip: Many phones also let you start with +66 by using the + symbol instead of an exit code when supported.
Neighboring countries
Thailand borders 4 countries, so nearby international numbers can look similar. Confirm the country code before dialing.
Common dialing mistakes
- • Using the local number without your international exit code.
- • Forgetting to include the country code.
- • Including a domestic trunk prefix that is not needed for international calls.
- • Missing a city or regional area code when one is required.
- • Copying a number with spaces or punctuation but changing the digit order.
Why your call may not connect
If calls to Thailand are failing, the issue is usually the exit code, area code, number format, or carrier restrictions.
Call not connecting
- Confirm that you entered your exit code before 66.
- Check that the number for Thailand is written in international format.
- Remove extra zeros, spaces, or punctuation if your provider does not accept them.
- If needed, try dialing with +66 or 66 depending on how your carrier formats international calls.
Missing area code
- Many calls to Thailand need a city, region, or carrier code before the local number.
- Ask the recipient to confirm the full number they give to international callers.
- Check whether the number is mobile, landline, or toll-free because formats can differ.
- Try the full published number exactly as shown in international format.
International calling blocked
- Verify that your phone plan allows international calling.
- Some destinations in Thailand may be restricted by your carrier or calling app.
- Try another provider, app, or network to see whether the route changes.
- Contact your carrier if calls fail before they ever start ringing.
Time zone confusion
- Thailand uses a single time zone (UTC+07:00), so try again during local daytime hours.
- Businesses and support lines are easiest to reach during local working hours.
Number format issues
- Make sure the digits are in the correct order before you redial.
- Do not mix domestic and international formats in the same number.
- Look up a recent example for Thailand if you are unsure about spacing or length.
- If the number came from a website, compare it with another trusted source.
Poor call quality
- Switch from weak Wi-Fi to mobile data, or vice versa, and try again.
- Use a headset or quieter connection if the audio keeps cutting out.
- VoIP apps and direct carrier calls may route differently, so test both when possible.
- If quality stays poor, consider a different calling provider for Thailand.
Quick tips
- • Save the number in full international format starting with +66.
- • Try calling from a different carrier or app if one route keeps failing.
- • Ask the recipient to confirm the exact digits they use for international callers.
- • If you are calling a business in Thailand, try again during local business hours.
- • Check whether your plan allows international dialing and whether extra charges apply.
Thailand at a glance
Here are a few helpful details about Thailand that can make dialing, scheduling, and comparing rates easier.
Capital
Bangkok
Time zones
UTC+07:00
Region
Asia (South-Eastern Asia)
Currency
Thai baht (THB) · ฿
ISO code
TH
Best time to call
Thailand follows UTC+07:00. Aim for local daytime or business hours if you want the best chance of reaching someone.
Need a cheaper way to call Thailand?
See current calling rates and compare options before your next call to Thailand.
Frequently asked questions
These quick answers cover the most common questions about +66 and calling Thailand from abroad.
What country uses +66?
Thailand uses the +66 international calling code for incoming calls from abroad.
How do I dial +66?
Dial your exit code first, then 66, then the area code and local number. On mobile phones you can often replace the exit code with +66.
How do I call Thailand from another country?
Start with your international exit code, add +66, and then enter the full national number for Thailand.
Is +66 always enough to reach Thailand?
Not always. You may also need an area, city, or carrier code before the local number depending on the destination.
Are mobile and landline numbers different in Thailand?
They can be. Thailand may use different prefixes or lengths for mobile and landline numbers, so confirm the full format before dialing.
Can I dial 66 without the plus sign?
Yes. The plus sign is just shorthand for your exit code. If you are entering digits only, use 66 after your exit code.
Why can't I connect to Thailand?
Most failed calls happen because of an incorrect exit code, missing area code, blocked international calling, or a number copied in domestic rather than international format.