The need to know the exact placement of a certain sensor or smart meter in a network is indispensable for all sorts of applications. From the network operator's enterprise application down to local control applications using real-time measurements for active integration of renewables. Available data from the communication systems of these metering systems, as well as measurements from these sensors can be used to extract information regarding the assignment to the network or the individual feeder. This work presents a communication data based method to assign meters to their network and a voltage measurement based method to assign meters to their respective feeders.