Country calling codes (IDD codes / ISD codes) for international telephone calls are similar to the local area codes for a city when calling within the country. Of course, this does not mean that the local area codes can be omitted for phone calls to foreign countries. For international telephone calls, one has to start by dialing the country code that usually begins with '00', then the national area code, however, generally without the leading zero that may appear in the area code, and finally, like usual, the number of the person you want to reach. Therefore, the number used to make a call within the UK '08765.123456' will become '0044.8765.123456' for calls coming from Austria, Switzerland or another country. Any exceptions to this rule that are known to us can be found on this website.
The 10 most searched countries or country calling codes:
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