Patent ID: 8224334

Claim:
A system comprising: at least one processor; at least one memory, communicatively coupled to the at least one processor, and containing instructions for execution of computer-executable components, including: a data store configured to store information representative of mobile network carriers being associated with respective phone numbers; and an access control component communicatively coupled, using an out-of-band signaling network, to a lookup component of a wireless network communicatively coupled to a target mobile device via a mobile network carrier of the mobile network carriers configured to: receive, from a communication device, a request to communicate with the target mobile device; derive, based on the request, a phone number of the respective phone numbers that is associated with the target mobile device; identify the mobile network carrier based on the information and the phone number; direct a query, based on a signaling protocol of the out-of-band signaling network, to the lookup component, the query including information identifying the mobile network carrier; receive a reply, based on the signaling protocol of the out-of-band signaling network, including routing information that identifies a visiting location component of the wireless network from the lookup component of the wireless network; and establish, via the visiting location component of the wireless network, a call between the communication device and the target mobile device based on the routing information.