50.21.80.0,50.21.95.255,PF 50.21.96.0,50.21.127.255,US 50.21.128.0,50.21.143.255,CA 50.21.144.0,50.21.159.255,US 50.21.160.0,50.21.175.255,CA 50.21.176.0,50.21.223.255,US 50.21.224.0,50.21.239.255,CA 50.21.240.0,50.59.255.255,US