50.2.228.0-50.2.231.255 50.2.228.0/22
50.2.232.0-50.2.239.255 50.2.232.0/21
50.2.240.0-50.2.255.255 50.2.240.0/20
50.3.0.0-50.3.15.255 50.3.0.0/20
50.3.16.0-50.3.17.255 50.3.16.0/23
50.3.18.0-50.3.18.255 50.3.18.0/24