A method of determining a network leakage rate within a wireless communication network that uses counters within an application server. The number of users at a second point in time, determined by the counters, is subtracted from a number of users at a first point in time, determined by the counters, to provide a first result. The number of user attempts to access the network, determined by the counters, is multiplied by a success rate and then the number of users leaving the network (de-registering from the network or handing off to a different network) is subtracted to provide a second result. The second result is subtracted from the first result and then divided by the number of users at the first point in time. The absolute value is the network leakage rate.