Please note the following changes as of January 18th, 2014:
Domestic Calls
When calling within the country, calls can be made with or without dialing the country code.
International Calls
When calling out of the country, the exit code of the country should be dialed first, followed by the country code of the country being called.
What does that mean to me?
Before the change, you had to dial the country code every time you made a domestic call. For example, if you wanted to call a number in Germany from your German phone number, you had to dial the country code 49 followed by the phone number.
Soon you’ll be able to dial the phone number directly with or without the country code.
Using Exit Codes & Country Codes to Make International Calls
If you want to call another country, first dial the exit code for your country, followed by the country code for the country you are calling.
For example, if you you’re calling from a US number, and want to dial a number in Denmark, you should first dial 011 (the exit code for USA), then 45 (the country code for Denmark) followed by the phone number. Eg.: 011-45-88888888.
Here is a list of exit codes by country. If you need a country code, you might find this website useful: http://www.howtocallabroad.com/
Argentina00Australia0011Austria00Bahrain00Belgium00Brazil00Bulgaria00Canada011Chile00Croatia00Cyprus00Czech Republic00Denmark00Dominican Republic00El Salvador00Estonia00Finland00France00Georgia00Germany00Greece00Hong Kong001Hungary00Ireland00Israel00Italy00Japan010Latvia00Lithuania00Luxembourg00Malta00Mexico00Netherlands00New Zealand00Norway00Panama00Peru00Poland00Portugal00Puerto Rico011Romania00Singapore001Slovakia00Slovenia00South Africa00Spain00Sweden00Switzerland00United Kingdom00United States011Vietnam00