You won’t find that identifier there. Telemetry and iBeacon are different packet types, using different methods of identification (telemetry is using deviceID and iBeacon uses UUID/major/minor). You need to provide external mapping as I mentioned above. You can build that mapping using data from Estimote Cloud using for example: https://cloud.estimote.com/docs/#api-Devices-GetDevices . You will find UUID/major/minor there and corresponding device ID.