Abstract: The disclosed invention provides system and method for real-time screening and routing of incoming telephone calls. The invention provides a method of automatically routing incoming telephone calls to either internal phone call processing resources or to destination parties (system users) as defined by the individual destination parties. Dynamic extensions are assigned by a system user on demand from a pool of unassigned extensions, which are generated by an autoattendant telephone call routing system. As a dynamic extension is assigned to a particular caller, identification attributes are input into the system, which may include calling party identification information supplied by the source carrier of the calling party. The system then tags the assigned extension with the identifying information. Such tags are subsequently used by the system to classify the caller when the caller accesses internal call processing resources.