54.227.15.0-54.227.15.255 54.227.15.0/24
54.227.16.0-54.227.23.255 54.227.16.0/21
54.227.24.0-54.227.27.255 54.227.24.0/22
54.227.28.0-54.227.28.255 54.227.28.0/24