Aspects of the subject disclosure may include, for example, a system that receives a notification, from an identity proxy function, indicating an identity mobile subscriber identity (IMSI) is being registered. That is, a communication device sends a registration request that includes the IMSI to a first registration function. Further, the identity proxy function intercepts the registration request and sends the first notification to the device. Also, the system, sends a first registration message to the first registration function. The first registration function includes a first registry. Further, the first registration message indicates to the first registration function to add the IMSI to the first registry. The system also sends a second registration message to a second registration function. The second registration function includes a second registry. Further, the second registration message indicates to the second registration function to remove the IMSI to the first registry. Other embodiments are disclosed.