Telecommunication system, with a communication network (1), and a database (10), accessible through the network (1), the database (10) comprising telephone numbers (60), and associated with a telephone number a location identification (70), each location identification (70) comprising a primary geographical location identifier (71) and a secondary geographical location identifier (72), wherein the primary geographical location identifier (71) is an identifier of an area (I-VI) of the network (1), such as a postal code, and the secondary geographical location identifier (72) is an identifier of the geographical location associated with the corresponding telephone number (60), such as a geographical place name.