192.240.160.0-192.240.175.255 192.240.160.0/20
192.240.176.0-192.240.183.255 192.240.176.0/21
192.240.184.0-192.240.187.255 192.240.184.0/22
192.240.188.0-192.240.188.255 192.240.188.0/24