ip route add blackhole 177.39.237.0/24
ip route add blackhole 177.39.238.0/24
ip route add blackhole 177.39.232.0/24
ip route add blackhole 177.39.233.0/24
ip route add blackhole 177.39.236.0/24
ip route add blackhole 177.39.232.0/21
ip route add blackhole 177.39.235.0/24
ip route add blackhole 177.39.239.0/24
ip route add blackhole 177.39.234.0/24