International Numbering Plans offers free online tools for international phonecalls. Click on area code lists to view the international area code or city region code of your choice. Click on dialing instructions for a step-by-step guide about how you can make an international call from your current country to another country in the world. You can also use tools to analyze telephone numbers and tools to find out more about other codes (ISDN,IMSI,ISPC,IMEI).