A system for determining subscriber information includes an access server coupled to a number of subscribers using a communication network, a memory coupled to the access server, and a processor coupled to the memory. The access server receives a communication from a particular subscriber using a particular one of a number of virtual circuits associated with the communication network. The memory stores subscriber information for the subscribers, wherein the subscriber information is indexed by path information that identifies a virtual circuit assigned to the particular subscriber. The processor determines subscriber information for communication to the particular subscriber based upon the path information and the particular virtual circuit used to receive communication from the particular subscriber.