192.168.25.0---192.168.25.63 255.255.255.11000000192.168.25.64---192.168.25.127 255.255.255.11000000192.168.25.128--192.168.25.191 255.255.255.11000000192.168.25.192---192.168.25.255 255.255.255.11000000
