12.28.55.0-12.28.55.255 12.28.55.0/24
12.28.56.0-12.28.63.255 12.28.56.0/21
12.28.64.0-12.28.95.255 12.28.64.0/19
12.28.96.0-12.28.103.255 12.28.96.0/21