iptables -A INPUT -s 66.113.192.0/20 -j DROP
iptables -A INPUT -s 66.113.176.0/21 -j DROP
iptables -A INPUT -s 204.174.223.0/24 -j DROP
iptables -A INPUT -s 66.113.184.0/22 -j DROP
ip6tables -A INPUT -s 2606:6a00::/32 -j DROP
iptables -A INPUT -s 64.40.96.0/19 -j DROP