172.217.20.30-172.217.20.31 172.217.20.30/31
172.217.20.32-172.217.20.63 172.217.20.32/27
172.217.20.64-172.217.20.127 172.217.20.64/26
172.217.20.128-172.217.20.159 172.217.20.128/27
172.217.20.160-172.217.20.175 172.217.20.160/28
172.217.20.176-172.217.20.176 172.217.20.176/32