Mobile terminals locating

System for locating mobile terminals comprising a plurality of recording servers and a plurality of location servers,

• each recording server adapted to communicate with a plurality of mobile terminals recorded with said recording server, for a communication relay,
• with the recording servers and the location servers configured to communicate together via an extended network and organised in a hierarchical tree of parent servers and child servers in such a way that:
• each recording server has a single parent server constituted by a location server;
• each location server has either a single parent server constituted by a location server, or no parent server;
• at least one location server among the plurality of location servers has a parent server;
• and
• each location server comprising a database of mobile terminals constituted of a plurality of mobile terminal records, each of said mobile terminal records comprising address data of a mobile terminal recorded with a descending recording server of said location server in the hierarchical tree;
• wherein a location server, parent in the hierarchical tree, comprises all of the records contained in a recording or location server, downstream of said parent location server in the hierarchical tree;
• and
• wherein the address data of a mobile terminal includes an address, over the extended network, of a recording server with which is recorded said mobile terminal.