Dialing long distance from North America? You’ll need both the country and city code of the calling destination.

i.e. 011 + 27 + 21 + Tel #

• Long Distance Prefix
• Country Code
• City Code
• The local destination number

Below are the top 3 resources:

1. Countrycode.ca: AJAX Powered Search
2. Countrycallingcodes.com: 2 Step Search
   
3. Wikipedia: Country Dialing Codes

Countrycode.ca:
Advantages: Fast, clean and simple design. Disadvantages: No American City Codes

Countrycallingcodes.com:
Advantages: Contains American City Codes Disadvantages: Cluttered, 2-step process

Wikipedia:
Advantages: Wealth of information Disadvantages: Confusing and no search function.