When calling a phone number in another country, there is usually a prefix you have to dial to indicate that you're placing an international call; this varies by country. After that international dialling prefix, you must dial the international country code for the country you are calling, followed by the local number. This is a list of those country codes.
Note: The United States and its possessions, Canada, and several Caribbean nations technically share the international calling code 1, with each state (or parts of states), province, territory, or island nation given its own three-digit "area code". The following list includes the area codes for such nations outside the US and Canada, as well as those of US possessions outside of the United States proper.
Before dialling the area code, you usually have to dial an international prefix. This is so that the country code won't be confused with the first few digits of a local or national telephone number. Here are a list of common international prefixes that need to be dialed before the country code and the rest of the phone number:
00 - Argentina, European Union, Mainland China, Malaysia, Mexico, New Zealand, Philippines, Saudi Arabia, South Africa, Turkey
001 - Hong Kong, Indonesia, Singapore, South Korea, Thailand
002 - Taiwan
009 - Nigeria
010 - Japan
0011 - Australia
011 - in the United States and Canada
0021 - Brazil
810 - Russia
Alternatively, if you have a mobile phone, you can dial the '+' key first before the country code regardless of which country you are calling from.
This travel topic is an outline and should either be merged into an appropriate parent topic or else developed further. It has a template, but there is not enough information present for it to be of real use. It was last edited on 2012-07-21 and will be merged or deleted if not modified for one year. Please plunge forward and rescue it!