There are several countries with a domestic area code 031, including places as diverse as Constantine, Algeria; the Western region of Ghana; Al Khums, Libya; Ilorin, Nigeria; Orange mobile phones in Tunisia; Durban, South Africa; Chiredzi, Zimbabwe; Osijek-Baranja, Croatia; Tesco mobile phones in Hungary; Bern, Switzerland; Göteborg (Gothenburg), Sweden; Hai Phong, Vietnam; Surabaya, Indonesia; and Concepción, Paraguay.
International telephone country code +31 is the Netherlands. It is dialed as 0031 from many countries.
(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
The telephone country code for Italy is +39. The area code for Como is 031, or +39 031 in international format. Note: unlike most countries, you DO NOT drop the trunk prefix 0 from the Italian domestic area code when putting the number in international format.
The telephone country code for Zimbabwe is +263. The area code for Beitbridge is 0286, or +263 286 in international format.
The telephone country code for Ghana is +233. The area code for Axim is 031, or +233 31 in international format. The local number is always 7 digits. Almost all telephone numbers in Ghana changed in 2010. An old Axim number of the form (0342) XXXXX changed to (031) 21X-XXXX.
The telephone country code for Ghana is +233. The area code for Enchi is 031, or +233 31 in international format. The local number is always 7 digits. Almost all telephone numbers in Ghana changed in 2010. An old Enchi number of the form (0395) XXXXX changed to (031) 26X-XXXX.
The telephone country code for Ghana is +233. The area code for Samreboi is 031, or +233 31 in international format. The local number is always 7 digits. Almost all telephone numbers in Ghana changed in 2010. An old Samreboi number of the form (0394) XXXXX changed to (031) 25X-XXXX.
The telephone country code for Ghana is +233. The area code for Elubo is 031, or +233 31 in international format. The local number is always 7 digits. Almost all telephone numbers in Ghana changed in 2010. An old Elubo number of the form (0345) XXXXX changed to (031) 22X-XXXX.
Tarkwa is in Ghana's telephone area code 031, with 7-digit local numbers. (In 2010, Tarkwa changed from area code 0362, with 5-digit local numbers, to area code 031, with the prefix 23 inserted between the area code and local number to make the new number.)In international format, area code 031 becomes +233 31.(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.).
Area code +46 31 (or area code 031 as dialed within Sweden) is Göteborg (Gothenburg).
A telephone area code is numeric data, but in some cases it may be more appropriate to store it as a text field because many countries quote telephone area codes including the trunk prefix 0. For example, Liverpool, England, is in UK area code 0151. Also, it is sometimes more appropriate in countries that have variable-length area codes to sort them lexically, so that 031, 0321, 0322, 0325, and 033 would appear in that order.
Vietnam is country code +84. Hanoi is area code 04, which becomes +84 4 in international format.(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, and many other countries use different prefixes.)
The telephone area code for Pyongtaek-si, Gyeonggi-do, Korea, is 031, which is +82 31 in international format.(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, and many other countries use different prefixes.)
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