Simple fast look up of international dialling codes for 247 countries as well as reverse look up to find the country for a given dialling code. Contacts application style indexed and searchable tables are provided, indexed by the country name and the dialling code zone. Each entry provides additional details for the country:

1. • zone e.g. North American Numbering Plan.
   

2. • two letter country code e.g. US.
   

3. • international dialling code.
   

4. • national prefix used to call numbers within the country.
   

5. • international dialling prefix  required to call outside the country.
   

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