Abstract: A method and system is disclosed for tracking call transaction data from incoming telephone calls, including attempted calls that have not been completed, made to individual predetermined subscribers during a defined time period. Information, including demographic breakdowns of calls, such as time of day, day of week, location of origin, etc. is reported automatically by the system. Through the use of the Advanced Intelligent Network (AIN) and Integrated Service Control Point (ISCP) platform, call transaction data for incoming calls are captured in response to terminating triggers at Service Switching Points (SSPs). The call originating phone number for each call may be used to access an existing telephone system billing database, called Customer Record Information System (CRIS), to obtain caller information, including zip code. The zip code, in turn, can be used to access a commercially available census data base to provide further demographic information.