Abstract: The present invention provides a method for determining the carrier that should be used for a particular AIN call. The following information is derived for each call: the originating calling party number, the terminating called party number, the originating LATA, the terminating LATA. Using these components, pre-defined tables are accessed that contain local calling plan information. These tables contain rate center and dial plan information that provides the local calling scope that is available to the originator of the call. Based on the information contained in the tables, the appropriate type of carrier for the call is selected and the call is routed using this carrier.