Abstract: An SCP Location Register service (“SLR service”) for redirecting certain DP2 and DP3 traffic to the appropriate SCP in a multi-SCP IN architecture is described. In a preferred embodiment, the SLR service of the present invention is implemented on one or more SCPs in an IN comprising multiple SCPs. In one aspect, the SLR service redirects DP3 Account Management Service queries to the correct SCP without prompting twice for the MSISDN of interest. In this aspect, the SLR prompts for and collects the MSISDN of the subscriber, maps the MSISDN to the SCP Access Code (“SAC”), prepends the SAC digits to the called number, and returns a CONNECT message to the querying MSC with the new called number in a Called Number field and the collected MSISDN in a Redirecting Party ID field. In another aspect, the SLR service redirects DP2 Origination Traffic to the correct SCP in the same manner, except that it need not prompt for or collect the MSISDN.