A device may receive, from a network device, call information associated with a call. The call may be from a calling party device. The call may appear to be intended for a destination device. The call information may be received, from the network device, based on the network device having routed the call. The device may determine, based on the call information, that the call appears to have been forwarded to a called party device that is different from the destination device. The device may determine, based on the call information, a forwarding characteristic for the call. The device may determine that the forwarding characteristic satisfies a criterion. The device may send an output message based on the forwarding characteristic satisfying the criterion to support responding to call forwarding activity that has the forwarding characteristic.