Abstract: A system tracks ownership data for data resources coupled on a network. The system includes a data extractor for extracting data resource communication activity data from a plurality of network activity data sources, a database of organizational data resource ownership data, and a communication activity report generator for correlating extracted data resource communication activity data and organizational data resource ownership data so that ownership of communication activity may be tracked. The data extractor obtains network activity data from a variety of data sources such as firewalls, routers, servers, PBXs, softswitches, media gateways, SS7 signaling points, integrated access devices, and calling card imports. Network activity data about communication activity may be obtained directly from the data resources initiating the communication activity or from data sources that handle communication activity initiated by a data resource.