Abstract: A method for determining the presence of a femtocell in a network includes capturing a baseline sample for the network. The baseline sample includes a plurality of measurements taken across a plurality of downlink radio frequency (RF) bands within the network. The network is monitored to identify an RF signal having a signal strength value exceeding a predetermined threshold. The identified RF signal is compared with the captured baseline sample. The presence of the femtocell in the network is determined based on a determination that the identified RF signal does not match any of the plurality of measurements contained within the baseline sample.