Methods, systems, and computer programs encoded on computer storage medium, for identifying a classification of a first device; comparing the classification of the first device with a device classification listing for zones of control; determining that the classification of the first device matches i) the device classification listing for a first zone of control and ii) the device classification listing for a second zone of control; identifying a classification of a second device; comparing the classification of the second device with i) the device classification listing for the first zone of control and ii) the device classification listing for the second zone of control; determining that both i) the classification of the first device and ii) the classification of the second device matches the device classification listing for only the first zone of control; identifying a gateway of the first zone of control as managing the first and second devices.