iptables -A INPUT -s 208.69.48.0/21 -j DROP
iptables -A INPUT -s 139.60.136.0/21 -j DROP
iptables -A INPUT -s 139.180.232.0/21 -j DROP
iptables -A INPUT -s 198.17.52.0/24 -j DROP
iptables -A INPUT -s 139.60.128.0/21 -j DROP
iptables -A INPUT -s 139.60.128.0/20 -j DROP