Telephone numbers in Thailand

From Wikipedia, the free encyclopedia
  (Redirected from +66)
Jump to: navigation, search
Thailand telephone numbers
Location
Country Thailand
Continent Asia
Access codes
Country calling code +66
International call prefix 00
Trunk prefix 0

Telephone numbers in Thailand are regulated by the Ministry of Information and Communication Technology (MICT).

Geographic area codes[edit]

Geographic (fixed line) area codes are, excluding the STD prefix 0, one digit in Bangkok and nearby provinces (area code 2) and two digits in provinces (area codes 3x, 4x, 5x, and 7x). In Thailand, an area code is usually shared by several provinces and roughly follows provincial borders.

Fixed-line subscriber numbers are six digits in Thailand (except Bangkok, Nonthaburi, Pathum Thani, and Samut Prakan, i.e., area code 2). Prior to 1980, subscriber numbers were six digits in Bangkok, Nonthaburi, Pathum Thani, and Samut Prakan. In 1980, subscriber numbers in these areas were expanded to seven digits in phases to meet new demands. The first digit of a subscriber number is associated with a specific locale within the area code. In Bangkok, Nonthaburi, Pathum Thani, and Samut Prakan, the second digit of a subscriber number identifies the service provider, which is almost always Telephone Organization of Thailand (TOT), as TOT holds a near-monopoly of the Thai fixed-line market.

Thus, a full national number is 9 digits, including the STD prefix 0. When writing a telephone number with the area code, the area code and subscriber number are separated by a hyphen, also in the middle of subscriber number. Examples:

  • A number 2134567 in Bangkok: 02-2134567
  • A number 213456 in Nakhon Ratchasima: 044-213456

Thailand switched to a closed dialing plan in 2001, which means that calling within the area code requires the area code to be dialed. E.g., When calling a number 2134567 in Bangkok (02) from a fixed-line phone:

  • Within Bangkok, Nonthaburi, Pathum Thani, and Samut Prakan: 02-2134567
  • Outside Bangkok, Nonthaburi, Pathum Thani, and Samut Prakan: 02-2134567
  • Outside Thailand: +66-2-2134567 (the initial 0 of the area code is omitted)
02 Bangkok (Krung Thep Maha Nakhon), Nonthaburi, Pathum Thani, Samut Prakan, & Phutthamonthon (Nakhon Pathom)
032 Phetchaburi, Prachuap Khiri Khan, & Ratchaburi
034 Kanchanaburi, Nakhon Pathom (except Phutthamonthon), Samut Sakhon, & Samut Songkhram
035 Ang Thong, Phra Nakhon Si Ayutthaya, & Suphan Buri
036 Lop Buri, Saraburi, & Sing Buri
037 Nakhon Nayok, Prachin Buri, & Sa Kaeo
038 Chachoengsao, Chon Buri, & Rayong
039 Chanthaburi & Trat
042 Bueng Kan, Loei, Mukdahan, Nakhon Phanom, Nong Bua Lamphu, Nong Khai, Sakon Nakhon, & Udon Thani
043 Kalasin, Khon Kaen, Maha Sarakham, Roi Et, & Nam Nao (Phetchabun)
044 Buri Ram, Chaiyaphum, Nakhon Ratchasima, & Surin
045 Amnat Charoen, Si Sa Ket, Ubon Ratchathani, & Yasothon
053 Chiang Mai, Chiang Rai, Lamphun, & Mae Hong Son
054 Lampang, Nan, Phayao, & Phrae
055 Kamphaeng Phet, Phitsanulok, Sukhothai, Tak, Uttaradit, Sam Ngam, & Wachirabarami (Phichit)
056 Chai Nat, Nakhon Sawan, Phetchabun (except Nam Nao), Phichit (except Sam Ngam & Wachirabarami), & Uthai Thani
073 Narathiwat, Pattani, & Yala
074 Phatthalung, Satun, & Songkhla
075 Krabi, Nakhon Si Thammarat, & Trang
076 Phang Nga & Phuket
077 Chumphon, Ranong, & Surat Thani

Mobile phone codes and IP telephony[edit]

Mobile phone codes are in area codes 8 and 9, and VoIP are in the area code 6, ranging 2 digits excluding the leading zero.

Originally, each mobile phone operator was issued one mobile phone code. Through a series of mergers, there are currently three major mobile phone operators: AIS, True and DTAC. As existing numbers begin to run out, the three mobile phone operators are assigned numbers in code 081, distinguished by the first digit of the subscriber number.

A mobile phone number consist of a mobile phone code and a seven-digit subscriber number. Therefore, a mobile phone number is written as 08x-xxxxxxx.

Mobile phones in Thailand use 900/1800 MHz for GSM. Domestic roaming service is available free within Thailand in places where there is only a single transmitter in place due to restrictions.

As codes are being exhausted, a new range, 09x is made available for assignment. Despite the length of the code, subscriber numbers are seven digits, resulting in a 10-digit national number including the leading zero. Starting 28 April 2011, the prefix 090 followed by 7 digits would be available for use.

060 True Move (VoIP)
068 TOT (VoIP)
080-0 to 080-2 AIS
080-3 True Move
080-4 to 080-5 DTAC
080-6 AIS
081-0 to 081-2 AIS
081-3 to 081-6 DTAC
081-7 to 081-9 AIS
082 AIS
083 True Move
084 AIS
085 DTAC
085-4 AIS
086 True Move
087 AIS
088 True Move
089 DTAC
090 DTAC
090-1 AIS
090-9 True Move H
091 DTAC

Non-geographical short codes and special numbers[edit]

100          Universal operator service (formerly fixed telephone & facsimile fault report)
101          Operator assistance for domestic calls (to be combined to 100)
102          Operator service assistance (to be combined to 100)
1100        TOT
1111        Thai Government Call Center
1112        The Pizza Company
1133        Fixed telephone directory assistance
1155        Tourist Police
1175        AIS
1188-xxx-xxxx Paging service (now abolished)
1193        Highway Police
1331        True Move, True Move H
1401-xxx-xxx Toll-free numbers
1580        Upcoming flights on Suvarnabhumi Airport
1581        Upcoming flights on other airports
1669        Medical Emergency Call
1678        DTAC
1691        Ambulance Service Center
1800-xxx-xxx Toll-free numbers (from landlines only)
1900-xxx-xxx Premium-rate telephone number
191          Universal emergency service
199          Fire Department

Number portability[edit]

Recently, the MICT announced mobile number portability (MNP) service for mobile carriers. Thus, subscribers are allowed to retain their mobile numbers when they switch to another service provider, in a bid to increase market competition. Therefore, the mobile number prefix only indicates the original service provider.

Number portability has not been offered for fixed lines, as TOT holds a monopoly except in Bangkok and some areas in the Bangkok Metropolitan Area.

References[edit]