This application will help to determine telephone numbers, bothmobile and fixed telecom operators around the world by using codes.Guide consists of two modules: - Identification “Who called?” Justenter your phone number and you will receive information by thefollowing numbers of telephone subscriber: country, state, region,area, city, town. - The instruction "How to call?" It helps to findand display the plan of numbers as handy reference of codes forcountries, cities and mobile operators worldwide. Please note, thisapplication can’t tell you who's calling, but it can help to findby telling where the call is from, providing that the number ofsubscriber is fixed and attached geographically or to the networkprovider. Database is constantly updated and corrected, as it islocated on a remote server. The program requires an Internetconnection. The application is free.