What is a country calling code?

A country calling code is the numeric prefix you dial before a national phone number to route a call to a specific country. For example, +1 reaches the United States and Canada, +44 reaches the United Kingdom, and +91 reaches India. The plus sign stands in for the international access code your network uses.

How do I dial an international number correctly?

Start with your exit or access code (or the + symbol on a mobile), add the destination country code, then the area or city code without its leading zero, and finally the local subscriber number. So a London line looks like +44 20 7946 0000.

What does the plus (+) sign mean in a phone number?

The + is a universal placeholder for the international dialing prefix. Saving numbers in +country-code format means they connect from any country without editing the access code, which is why it is the recommended way to store contacts.

Why do the United States and Canada share the country code +1?

Both countries belong to the North American Numbering Plan, a shared system that also covers several Caribbean nations. They use the same +1 country code but are separated by distinct three-digit area codes.

Do I need to remove the leading zero from a phone number when calling internationally?

Usually yes. Many countries print a trunk prefix, often a 0, for domestic calls. When dialing from abroad you drop that leading zero after the country code. For example, a UK mobile written as 07700 900000 becomes +44 7700 900000.

How do I correctly dial a Thai phone number in letsdial?

Thailand's country code is +66. Bangkok uses area code 2 (domestic 02), Chiang Mai uses 53 (domestic 053), and Phuket uses 76 (domestic 076). Mobile numbers start with 08x or 09x domestically — e.g., 081, 085, 089, 091. In letsdial, enter +66 2 XXX XXXX for a Bangkok landline or +66 81 XXX XXXX for a True Move mobile, dropping the trunk zero from domestic format.

What time zone does Thailand use, and is there a DST to account for?

Thailand operates on Indochina Time (ICT, UTC+7) with no daylight saving adjustments, making it perfectly stable for scheduling letsdial calls year-round. ICT is shared with Vietnam, Cambodia, and Laos. For European callers (CET), Thailand is 6–7 hours ahead. For US West Coast callers (PT), Thailand is 15 hours ahead in winter, making same-day live call overlap very narrow.

Can letsdial provide a Bangkok virtual number for businesses in Thailand's tourism or tech sectors?

Yes, letsdial offers Thai virtual numbers with Bangkok's 2 area code (+66 2), which is essential for credibility in Thailand's primary commercial and tourism-sector market. Bangkok is Thailand's economic, tourism, and government hub, and a local +66 2 number significantly improves response rates from Thai hotel chains, tour operators, tech companies, and government contacts who expect to see local numbers.

What business culture norms apply when placing letsdial calls to Thai companies?

Thai business culture is shaped by respect for hierarchy and the concept of 'kreng jai' (consideration for others' feelings), which means Thai counterparts may avoid saying 'no' directly even when unable to fulfill a request. On letsdial calls, speak politely and formally, address senior contacts with appropriate titles, and avoid any communication that could cause embarrassment or loss of face. Patience and relationship-building are key — rushing decisions on a first call is counterproductive.

Are Thai mobile numbers easy to identify in letsdial call logs?

Yes — Thai mobile numbers use the 08x and 09x ranges domestically, becoming +66 8x and +66 9x in international format. Landlines use shorter area codes (2 for Bangkok, 53 for Chiang Mai, 76 for Phuket, etc.). In letsdial's call history, a +66 8x or +66 9x number immediately identifies a mobile, while a +66 2x (2-digit area code) signals a Bangkok landline, making routing and billing classification straightforward.

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Thailand

+66

Country code

International prefix

Thailand's country code +66 connects Southeast Asia's second-largest economy. Bangkok is a major hub for tourism, manufacturing, and regional trade.

Best hours:9 AM – 6 PM ICT

Language:Thai

Capital:Bangkok

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🇹🇭

Thailand

TH · Asia

+66

dial code

Capital

Bangkok

Currency

THB (฿)

Language

Thai

Population

70 million

Best calling window

9 AM – 6 PM ICT

12 AM

12 PM

11 PM

Indochina Time (ICT) · UTC+7

Country

Thailand

2 Digit ISO

Country Calling Code

+66

ISO Alpha-3

THT

Loading map…

Bangkok

Capital

Live

Bangkok

--:--:-- --

Time Zone

Indochina Time (ICT)

Quick Facts

CurrencyTHB (฿)

LanguageThai

Population70 million

GMT OffsetUTC+7

Best Hours9 AM – 6 PM ICT

Step by step

How to call Thailand from abroad

International dialing is a four-step process.
Use + on mobile to skip the exit code entirely.

Step 01

001

Exit code

Dial from US/Canada (or use +)

Step 02

+66

Country code

Thailand international prefix

Step 03

Area / city code

Local routing prefix

Step 04

123 4567

Local number

Subscriber number

dialing-example.txt

International format

001—66—2—123 4567

Shorthand (works from any device): +66 2 123 4567

Calling Guide

Best time to call Thailand · Indochina Time (ICT)

View guide

Why letsdial

Benefits of calling Thailand
with letsdial

Start free trial

Get a local +66 number

A Bangkok +66 2 caller ID signals a Thai business presence — important in a market where LINE precedes voice calls for virtually all professional outreach.

Thailand and 50+ countries, one plan

Call Thailand and 50+ global markets from one letsdial subscription — no per-city fees for Bangkok, Chiang Mai, or Phuket.

Full call analytics

Track every Thailand call in ICT (UTC+7) — monitor answer rates, peak business windows, and team performance in one real-time dashboard.

Works on any device

Mobile app, desktop, or IP phone — your +66 number lets your team reach Thai contacts from any device, whether you're in the region or abroad.

Unified Communications

One platform. Every call, message and team — connected.

One cloud platform replaces your phone system, chat tool, and contact centre — no hardware, no juggling apps.
Reach Thailand and 50+ countries from one dashboard.

50+

Countries covered

99.9%

Uptime SLA

2 min

Setup time

Hardware needed

Voice & Video Calls

Crystal-clear HD calls to Thailand and 50+ countries from one number.

Team Messaging

Chat, share files, and collaborate — all inside the same platform you call from.

Real-Time Analytics

Live dashboards for call volumes, answer rates, and agent performance.

Global Number Coverage

Local +66 numbers plus 50+ country codes — managed from one dashboard.

Format reference

Thailand& neighbouring countries

Thai numbers under +66 use area codes — Bangkok (2), Chiang Mai (53), Phuket (76). Always drop the leading 0. Mobile numbers use 06xx/08xx/09xx: +66 8x xxx xxxx.

CountryLocal formatInternational format

Thailandcurrent123 4567+66 2 123 4567

Singapore6789 1234+65 6789 1234

Malaysia1234 5678+60 3 1234 5678

Indonesia1234 5678+62 21 1234 5678

Vietnam1234 5678+84 24 1234 5678

Japan1234 5678+81 3 1234 5678

Good to know

Tips for calling Thailand

4 things to check before you dial internationally

Drop the leading 0 from Thai area codes

Thai area codes start with 0 domestically (02 Bangkok, 053 Chiang Mai, 038 Pattaya) — drop that 0 when dialling from abroad: +66 2 for Bangkok. Thai mobiles start with 06xx/08xx/09xx: +66 8xx xxx xxxx.

LINE is Thailand's essential business platform

LINE is the dominant messaging platform for both personal and professional communication in Thailand. A LINE message before calling is standard business practice and shows cultural awareness of the Thai market.

Show a local +66 caller ID

Thai contacts rarely answer calls from unknown international numbers. A letsdial +66 2 (Bangkok) caller ID signals a Thai business presence and substantially improves the likelihood of being answered.

ICT is UTC+7 — no daylight saving

Indochina Time never changes. Thai business hours are 8:30 AM–5:30 PM ICT, Monday to Friday. From London (GMT), Thailand is 7 hours ahead in winter; from New York (ET), 12 hours.

Market data

Thailand communication insights

85%

Internet penetration

85% of Thailand's population uses the internet, with mobile broadband as the primary access channel.

95%

Mobile users

95% of Thai residents use mobile phones, with 4G coverage available across most of the country.

73%

Smartphone owners

70% of Thai adults own smartphones; LINE is the dominant platform for business and personal messaging.

78%

Digital businesses

75% of Thai businesses have adopted digital communication and commerce tools for their operations.

Global directory

List of Country Codes

50+ countries listed with their international dial prefix and ISO code.

Filter by letter or search to find any country code instantly.

Thailand calling FAQs

Frequently asked about Thailand

LINE is the overwhelmingly dominant messaging platform in Thailand, used by the vast majority of Thai smartphone users for both personal and business communication. Before placing any letsdial call to a Thai contact, reaching out on LINE first is not just recommended — it is essentially expected in Thai business culture. Many Thai businesses conduct client communication, customer service, and even transactions entirely within LINE.

Get a local Thailand number

Get a local Thailand number in minutes.

Build trust with Thailand customers using a local +66 virtual phone number — from the same letsdial dashboard your whole team already uses.

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Looking up US area codes? Browse all US area codes →

Thailand

Thailand

How to call Thailand from abroad

Benefits of calling Thailandwith letsdial

Get a local +66 number

Thailand and 50+ countries, one plan

Full call analytics

Works on any device

One platform. Every call, message and team — connected.

Thailand& neighbouring countries

Tips for calling Thailand

Drop the leading 0 from Thai area codes

LINE is Thailand's essential business platform

Show a local +66 caller ID

ICT is UTC+7 — no daylight saving

Thailand communication insights

List of Country Codes

Frequently asked about Thailand

Get a local Thailand number in minutes.

Benefits of calling Thailand
with letsdial