172.104.160.0-172.104.175.255 172.104.160.0/20
172.104.176.0-172.104.183.255 172.104.176.0/21
172.104.184.0-172.104.185.255 172.104.184.0/23
172.104.186.0-172.104.186.255 172.104.186.0/24