iptables -A INPUT -s 168.90.250.0/23 -j DROP
iptables -A INPUT -s 168.90.248.0/24 -j DROP
ip6tables -A INPUT -s 2804:2db4::/32 -j DROP
iptables -A INPUT -s 168.90.250.0/24 -j DROP
iptables -A INPUT -s 168.90.251.0/24 -j DROP
iptables -A INPUT -s 168.90.248.0/23 -j DROP
iptables -A INPUT -s 168.90.249.0/24 -j DROP
iptables -A INPUT -s 168.90.248.0/22 -j DROP