3.217.20.0-3.217.23.255 3.217.20.0/22
3.217.24.0-3.217.31.255 3.217.24.0/21
3.217.32.0-3.217.63.255 3.217.32.0/19
3.217.64.0-3.217.127.255 3.217.64.0/18
3.217.128.0-3.217.159.255 3.217.128.0/19
3.217.160.0-3.217.175.255 3.217.160.0/20
3.217.176.0-3.217.179.255 3.217.176.0/22