iptables -A INPUT -s 157.119.48.0/24 -j DROP
iptables -A INPUT -s 103.231.231.0/24 -j DROP
iptables -A INPUT -s 157.119.49.0/24 -j DROP
iptables -A INPUT -s 157.119.50.0/24 -j DROP
iptables -A INPUT -s 103.231.228.0/24 -j DROP
iptables -A INPUT -s 157.119.51.0/24 -j DROP
iptables -A INPUT -s 103.231.230.0/24 -j DROP