A method and system for a mobile station to identify to a wireless network agent, an access point into a wireless network. The mobile station obtains an indication of an access point into the wireless network and inserts the indication into a mobile registration message. The access point identifier identifies an access point into the wireless network. Then, the mobile station sends the mobile registration message to the wireless network agent via the access point identified by the access point identifier. The wireless network agent receives the mobile registration message and provides the access point identifier to an authentication, authorization, and accounting (AAA) server. The AAA server uses the access point identifier to provide location-based services to the mobile station.