System for managing the reachability of at least one user, referred to as the called party, on at least one communicating terminal, referred to as the called terminal, via at least one communication network, for the reachability of the called party by at least one user, referred to as the calling party, on at least one communicating terminal, referred to as the calling terminal, the system comprising: • at least one centralization server, accessible via the communication network/networks and comprising at least one, so-called centralized, database (DB_ENUM) storing data relating to a plurality of called parties, these data comprising, for each called party, a main identifier, referred to as the unique number (1 ID), associated with at least one communication identifier (FQDN), • at least one called terminal, comprising means of communication via the communication network/networks, means for processing data, interactive means for the control of the communicating terminal by the called party and storage means, the system being characterized in that it comprises: • at least one management module, implemented in the processing means of the called terminal, comprising communication means rendering it accessible via the communication network/networks, the management module controlling: - a recording in the means of storage of the called terminal, of at least certain data, referred to as reachability data, from among data representative of at least one unique number, of at least one profile comprising data representative of communication identifiers (FQDN) of the called party sorted according to an order of preference and of at least one schedule comprising data representative of time slots and of parameters relating to the activation of the profile/ profiles during the time slots, the data representative of the order of preference, of the time slots and of the activation of the profile being determined by the called party by virtue of the management module and of the interactive means of its communicating terminal, - an update of the data stored in the centralized database (DB_ENUM) of the centralization server, with the help of the reachability data recorded in the means of storage of the called terminal, upon a change by the called party of at least one of the reachability data and/or in the course of time, when passing from one time slot to another. • at least one centralization server, accessible via the communication network/networks and comprising at least one, so-called centralized, database (DB_ENUM) storing data relating to a plurality of called parties, these data comprising, for each called party, a main identifier, referred to as the unique number (1 ID), associated with at least one communication identifier (FQDN), • at least one called terminal, comprising means of communication via the communication network/networks, means for processing data, interactive means for the control of the communicating terminal by the called party and storage means, the system being characterized in that it comprises: • at least one management module, implemented in the processing means of the called terminal, comprising communication means rendering it accessible via the communication network/networks, the management module controlling: - a recording in the means of storage of the called terminal, of at least certain data, referred to as reachability data, from among data representative of at least one unique number, of at least one profile comprising data representative of communication identifiers (FQDN) of the called party sorted according to an order of preference and of at least one schedule comprising data representative of time slots and of parameters relating to the activation of the profile/ profiles during the time slots, the data representative of the order of preference, of the time slots and of the activation of the profile being determined by the called party by virtue of the management module and of the interactive means of its communicating terminal, - an update of the data stored in the centralized database (DB_ENUM) of the centralization server, with the help of the reachability data recorded in the means of storage of the called terminal, upon a change by the called party of at least one of the reachability data and/or in the course of time, when passing from one time slot to another. - a recording in the means of storage of the called terminal, of at least certain data, referred to as reachability data, from among data representative of at least one unique number, of at least one profile comprising data representative of communication identifiers (FQDN) of the called party sorted according to an order of preference and of at least one schedule comprising data representative of time slots and of parameters relating to the activation of the profile/ profiles during the time slots, the data representative of the order of preference, of the time slots and of the activation of the profile being determined by the called party by virtue of the management module and of the interactive means of its communicating terminal, - an update of the data stored in the centralized database (DB_ENUM) of the centralization server, with the help of the reachability data recorded in the means of storage of the called terminal, upon a change by the called party of at least one of the reachability data and/or in the course of time, when passing from one time slot to another.