1. A network service configuration management system for network addressing management by remotely managing the configuration of at least one network service, comprising: a management server; a database for forming a dynamic network address directory by storing a representation of the configuration of the network service an agent software component for accessing to the configuration in a native language of the network service wherein: the management server is adapted to access to the database; the management server and the agent software component are adapted to communicate synchronization information to each other and to synchronize the representation of the configuration of the network service in the database and the native language configuration of the network service with each other based on the synchronization information, the synchronization information being in a language different from the native language of the configuration of the network service; wherein the agent software component is adapted to convert the configuration in native language of the network service into a tree representation; wherein the agent software component is adapted to make a differential analysis of the configuration in tree representation between a new state and an older state and to provide a stream of elementary operations allowing a tree representation of the configuration in the new state to be built up by applying the stream of elementary operations to the tree representation of the configuration in the older state.