iptables -A INPUT -s 109.32.0.0/13 -j DROP
iptables -A INPUT -s 62.140.128.0/20 -j DROP
iptables -A INPUT -s 62.140.140.0/23 -j DROP
iptables -A INPUT -s 62.140.156.0/23 -j DROP
iptables -A INPUT -s 31.136.0.0/14 -j DROP
iptables -A INPUT -s 62.72.192.0/19 -j DROP