A method is provided on an electronic communications device having a subscriber identifier, the method for identifying a contact entry associated with an electronic communication specified by a communication identifier. The method comprises searching an address book associated with the device; in response to finding a first and a second contact entry each having a respective first contact communication identifier matching the communication identifier, comparing a second contact communication identifier with the subscriber identifier; and identifying the second contact entry associated with the electronic communication if the second contact communication identifier in the first contact entry matches the subscriber identifier.