+66 is the country code for Thailand.
Every phone number in Thailand starts with +66 when you call it from another country. From the US, dial 011 66, then the number without its first 0.
- Time there
- Bangkok timeIndochina Time, UTC+7, no daylight saving
- From the US or Canada
- 011 66 81 234 5678
- From the UK and most of Europe
- 00 66 81 234 5678
- From Australia
- 0011 66 81 234 5678
- From any mobile phone
- +66 81 234 5678
- Inside Thailand
- 081 234 5678
- Mobile numbers
- 9 digits after +66, starting 14, 61, 62, 63, 64, 65, 66, 67, 8 or 9
- Landlines
- 8 digits after +66, such as +66 1X XXX XXX in Bangkok/Nonthaburi/Pathum Thani/Samut Prakan
- Toll-free numbers
- Start with 1800
Check a +66 number to see whether it is a mobile, a landline or VoIP.
Pick the country, enter the number without the +66, and the free check shows whether it is valid and whether it is a mobile, a landline or VoIP.
Mobile numbers in Thailand start with 14, 61, 62, 63, 64, 65, 66, 67, 8 or 9, and this table shows which networks first issued each start.
| At home | From abroad | First issued by |
|---|---|---|
| 061 | +66 61 | AIS, True Move, DTAC |
| 062 | +66 62 | AIS, DTAC |
| 063 | +66 63 | AIS, DTAC, True Move |
| 064 | +66 64 | Penguin SIM, AIS |
| 065 | +66 65 | AIS, DTAC |
| 066 | +66 66 | DTAC |
| 067 | +66 67 | AIS |
| 08 | +66 8 | AIS, True Move, DTAC |
| 09 | +66 9 | AIS, True Move, DTAC |
People keep their number when they switch networks, so the start shows where a number began. Our free number portability lookup shows the network it is on today.
21 landline areas cover Thailand, from 01 in Bangkok/Nonthaburi/Pathum Thani/Samut Prakan to 077 in Chumphon/Ranong/Surat Thani.
| At home | From abroad | Area |
|---|---|---|
| 01, 02 | +66 1, +66 2 | Bangkok/Nonthaburi/Pathum Thani/Samut Prakan |
| 032 | +66 32 | Phetchaburi/Prachuap Khiri Khan/Ratchaburi |
| 033, 038 | +66 33, +66 38 | Chachoengsao/Chon Buri/Rayong |
| 034 | +66 34 | Kanchanaburi/Nakhon Pathom/Samut Sakhon/Samut Songkhram |
| 035 | +66 35 | Ang Thong/Phra Nakhon Si Ayutthaya/Suphan Buri |
| 036 | +66 36 | Lop Buri/Saraburi/Sing Buri |
| 037 | +66 37 | Nakhon Nayok/Prachin Buri/Sa Kaeo |
| 039 | +66 39 | Chanthaburi/Trat |
| 042 | +66 42 | Loei/Mukdahan/Nakhon Phanom/Nong Khai/Sakon Nakhon/Udon Thani |
| 043 | +66 43 | Kalasin/Khon Kaen/Maha Sarakham/Roi Et |
| 044 | +66 44 | Buri Ram/Chaiyaphum/Nakhon Ratchasima/Surin |
| 045 | +66 45 | Amnat Charoen/Si Sa Ket/Ubon Ratchathani/Yasothon |
| 052, 053 | +66 52, +66 53 | Chiang Mai/Chiang Rai/Lamphun/Mae Hong Son |
| 054 | +66 54 | Lampang/Nan/Phayao/Phrae |
| 055 | +66 55 | Kamphaeng Phet/Phitsanulok/Sukhothai/Tak/Uttaradit |
| 056 | +66 56 | Chai Nat/Nakhon Sawan/Phetchabun/Phichit/Uthai Thani |
| 073 | +66 73 | Narathiwat/Pattani/Yala |
| 074 | +66 74 | Phatthalung/Satun/Songkhla |
| 075 | +66 75 | Krabi/Nakhon Si Thammarat/Trang |
| 076 | +66 76 | Phang Nga/Phuket |
| 077 | +66 77 | Chumphon/Ranong/Surat Thani |
In Thailand, the phone number format for apps and SMS gateways is +66 followed by the number without its 0.
| Written | Example | Where you see it |
|---|---|---|
| At home | 081 234 5678 | Business cards, local ads |
| International | +66 81 234 5678 | Websites, email signatures |
| E.164 | +66812345678 | APIs, SMS gateways, CRMs |
A missed call from a +66 number you don't know can be a one-ring scam, so check it before calling back.
One-ring scams call once and hang up, hoping you call back a line that bills you international or premium rates.
- Don't call back an international number you don't know. A real caller leaves a message or sends a text.
- Check the number in the box above. A number that is not a working mobile or landline in Thailand is a warning sign.
- Hang up on anyone who wants gift cards, crypto or a wire transfer, or asks you to read out a code that was just texted to you.
- Report it at reportfraud.ftc.gov, and see the FCC's guide to one-ring scams.
The codes next to +66 belong to other countries, so one wrong digit reaches a different place.
These are the questions people ask most about +66.
Which country uses the +66 country code?
Thailand. Every phone number there starts with +66 when it is dialed from abroad.
How do I call Thailand from the US?
Dial 011, then 66, then the number without its first 0. A mobile number written 081 234 5678 at home is dialed 011 66 81 234 5678 from the US, or +66 81 234 5678 from any mobile phone.
Is +66 the same as 0066?
Yes. 00 is the exit code used in most of the world, and the + on a mobile phone stands in for whatever exit code your network uses. From the US and Canada the exit code is 011 instead.
How many digits is a phone number in Thailand?
A mobile number has 9 digits after +66, written 081 234 5678 at home. A landline has 8 digits, written 01X XXX XXX at home.
What time is it in Thailand?
Thailand is on Indochina Time, UTC+7, all year. It does not use daylight saving time.
How do I check a +66 number that called me?
Enter it in the box above. The free check shows whether it is a valid number from Thailand and whether it is a mobile, a landline or a VoIP line, which helps you spot a one-ring scam before you call back.
Sources: Google's libphonenumber numbering data for lengths, mobile starts, area code places, first-issuing networks and time zones, as of September 24, 2026; the ITU list of country codes.