[header] How to call russia [title] Acquire the international prefix. [step] Also called the international dialing prefix (idd) or exit code, the international prefix is the number that allows you to dial outside the country. Many countries have their own code, but several unrelated countries still share the same number. 
For instance, an international call from inside turkey and the u.k. starts with 00, while a call originating from greenland or nigeria starts with 009.