PSINet, Inc. COGENT-154-12-16 (NET-154-12-0-0-1) 154.12.0.0 - 154.12.255.255 NetLab Global NETLAB-CGNT-NET-1 (NET-154-12-32-0-1) 154.12.32.0 - 154.12.63.255 Cogent Communications COGENT-174 (NET-154-12-32-0-2) 154.12.32.0 - 154.12.63.255