18.66.163.0-18.66.163.255 18.66.163.0/24
18.66.164.0-18.66.167.255 18.66.164.0/22
18.66.168.0-18.66.175.255 18.66.168.0/21
18.66.176.0-18.66.177.255 18.66.176.0/23