ip route add blackhole 199.71.244.0/22
ip route add blackhole 199.71.247.0/24
ip route add blackhole 199.71.248.0/24
ip route add blackhole 199.71.249.0/24
ip route add blackhole 199.71.250.0/24
ip route add blackhole 199.71.245.0/24
ip route add blackhole 199.71.244.0/24
ip route add blackhole 199.71.246.0/24
ip route add blackhole 199.71.251.0/24
ip route add blackhole 199.71.248.0/22