ipset -N myBlackhole-4 hash:net family inet
ipset -N myBlackhole-6 hash:net family inet6
ipset -A myBlackhole-4 64.118.64.0/20
ipset -A myBlackhole-4 208.75.224.0/21
ipset -A myBlackhole-4 208.93.112.0/21
iptables -A INPUT -m set --match-set myBlackhole-4 src -j DROP
ip6tables -A INPUT -m set --match-set myBlackhole-6 src -j DROP