A data structure that includes a user profile including user profile information, and a data structure comprising a set of available telephone numbers can be accessed. A targeted list of one or more telephone numbers can be generated using the set of available telephone numbers and information from the user profile. The targeted list can include one or more telephone numbers from the set of available telephone numbers that match at least a portion of the user profile information. Also, the targeted list can be sent to a rendering computing environment for display. User input selecting a telephone number from the targeted list can be received. In response to user input, the selected telephone number can be associated with a user profile in a data structure.