The disclosed embodiment relates to identifying telecom users. An exemplary method comprises collecting, with a computing device, call usage data based on the call usage of a new telecom user, comparing, with a computing device, the collected call usage data with existing call usage data stored within a call usage database to determine if the collected call usage data for the new telecom user corresponds with the existing call usage data for an existing telecom user, assigning the new telecom user a user identifier corresponding to the existing telecom user if it is determined that the collected call usage data for the new telecom user corresponds with the existing call usage data for an existing telecom user, and assigning the new telecom user a new user identifier if it is determined that the collected call usage data for the new telecom user does not correspond with the existing call usage data for an existing telecom user. The disclosed embodiment also relates to a system and computer-readable code that can be used to implement the exemplary methods.