Thailand country code, +66 explained.
Everything you need to call Thailand with Twiching — full dialing format, step-by-step guide, and Tier-1 CLI routes that land every call.
Thailand
Bangkok · Asia
· COUNTRY INFO · VERIFIED
ISO Alpha-2
TH
Capital
Bangkok
Region
Asia
Timezone
UTC+7
· DIALING GUIDE · VERIFIED
FULL DIAL FORMAT
011 · +66 · XX · XXXXXXX
How Thailand numbers break down
A complete number to Thailand follows this pattern. Twiching adds the exit and country codes automatically when you dial from the app.
EXIT CODE
Dial from the US/Canada to leave the country.
COUNTRY CODE
Routes the call directly into Thailand.
AREA / MOBILE
Regional or mobile prefix — drop the leading 0.
LOCAL NUMBER
The subscriber's local number.
COMPLETE NUMBER FORMAT
011 · +66 · XX · XXXXXXX
Thailand on the map
Bangkok · Asia
ROUTE
Tier-1 Direct
CLI
Verified
ASR
60%+ min
Virtual numbers & SIP trunking for Thailand
Businesses expanding into Thailand typically start with a local +66 virtual number: it's provisioned in the dashboard, rings through to any device, and presents local caller ID from the first call.
Local +66 caller ID
Calls display a recognisable Thailand number instead of an unfamiliar international one.
SIP trunking
Route your existing PBX or softphone through Twiching's Tier-1 trunk — no hardware swap.
Minutes to provision
Numbers activate in the dashboard the same day, with no on-the-ground carrier contract.
+66
Thailand · ready to provision today
What makes Twiching's Thailand routes different
Every call into Thailand rides the same Tier-1 backbone Twiching uses across all 191 countries — no separate infrastructure, no separate reliability tier for smaller markets.
Thailand
+66
191
Countries in directory
THAILAND INCLUDED
99.97%
Call delivery rate
STIR/SHAKEN
500+
Carrier interconnects
TIER-1 DIRECT
60%+
Guaranteed ASR
REAL-TIME ROUTING
How Thailand phone numbers are structured
Numbering Format
COUNTRY
+66
AREA
XX
LOCAL
XXXXXXX
Thailand's numbering plan is open, sitting under country code +66: a 2-digit prefix followed by a 7-digit local number, 9 digits combined. Numbers are often shown with a leading "0" for domestic use — drop it when dialing in from abroad.
Carriers & language
With 85% internet penetration, Thailand is covered by 3 major carriers — AIS, DTAC, True Move H. VoIP is permitted and regulated by National Broadcasting and Telecommunications Commission (NBTC). IVR prompts, SMS copy, and business hours here should account for the local language (Thai) and currency (THB).
Asia context
Asian markets range from fully liberalised to licensed-only VoIP, so compliant routing and correct local caller ID have an outsized effect on answer rates.
Skipping the exit code
Thailand calls from the US need 011 first, then +66 — the exit code isn't optional.
Keeping the national trunk "0"
Thailand numbers often show a domestic leading 0 — drop it once you've dialed the +66 country code from outside the country.
Ignoring the time difference
Thailand runs on UTC+7. Check local hours before dialing so calls don't land outside business time.
Compliance, carriers & rates for Thailand
Permitted — NBTC regulated
Regulated by National Broadcasting and Telecommunications Commission (NBTC)
National Broadcasting and Telecommunications Commission (NBTC) permits VoIP in Thailand without special licensing for compliant operators, which keeps setup straightforward — no separate approval process stands between signing up and placing the first call.
- VoIP is permitted for licensed operators under the NBTC regulatory framework.
- The Computer Crimes Act and PDPA impose data security and privacy obligations.
- Emergency call support (191/199) must be maintained by licensed VoIP providers.
Direct Tier-1 interconnect with AIS — no wholesale transit in between.
US → Thailand
$0.012/min
Thailand → US
$0.015/min
Billed per second, not rounded to the minute
How businesses use a Thailand number
Answer-rate advantage
Cold outbound into Thailand converts better from a recognisable +66 number than from a foreign-looking one, especially on first contact.
Direct routing, not transit
Thailand traffic rides Twiching's direct interconnect with AIS, skipping the lower-tier wholesale transit that can degrade call quality.
Follow-the-sun coverage
Staff Thailand hours (UTC+7) with routing that sends calls to the right team at the right local time.
One platform, Thailand included
Thailand is provisioned the same way as every other Twiching market — no separate onboarding process for a new country in the directory.
FAQ
Calling Thailand — frequently asked questions
Thai is the primary language in Thailand — IVR prompts, SMS copy, and support scripts should be written in it for the best response rates. Getting the greeting and menu options right in the local language is often the difference between a caller staying on the line or hanging up.
Thailand's local currency is THB, which is worth factoring into any pricing or invoicing shown to customers there. Twiching's own per-minute rates to and from Thailand are quoted in USD regardless of the local currency.
Bangkok is the capital of Thailand. A local +66 number is recognisable to callers there and nationwide, which is part of why presenting local caller ID tends to improve answer rates across the whole country, not just the capital.
Thailand runs on UTC+7. Knowing this helps schedule calls and support hours so they land during the local business day rather than the middle of the night for the person picking up.
The country code for Thailand is +66. To call Thailand from the United States, dial 011, then 66, then the local number. Twiching adds the 011 and +66 automatically when you dial from the app, so you only need to enter the local number itself.
The two most common slip-ups are forgetting the 011 exit code before +66, and keeping a domestic leading "0" that should be dropped. Both mistakes result in the call failing to connect rather than reaching the wrong number.
Full country code directory
Calling elsewhere in Asia? Every country below has the same dial-code breakdown, carrier list, and VoIP regulation summary as Thailand. All 190 other countries are listed below, Asia first.
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Phone numbers, voice, SMS and AI on one account. Direct Tier-1 routing into Thailand from day one.
Compliance with applicable regulations required.