104.28.0.0-104.28.15.255 104.28.0.0/20
104.28.16.0-104.28.19.255 104.28.16.0/22
104.16.0.0-104.23.255.255 104.16.0.0/13
104.24.0.0-104.27.255.255 104.24.0.0/14