Unrecognized number identifier

Communication address identification information is obtained. A communication address number is collected from a customer at a telecommunications apparatus in response to a trigger being initiated at a switch and a connection being established between the switch and the telecommunications apparatus. Communication address identification information is obtained from a memory in response to collecting the communication address number from the customer. The communication address identification information is returned to the customer when communication address identification information corresponding to the communication address number is available at the memory.