firewall-cmd --zone=drop --permanent --add-source=178.72.72.0/21
firewall-cmd --zone=drop --permanent --add-source=47.235.0.0/16
firewall-cmd --zone=drop --permanent --add-source=47.236.0.0/14
firewall-cmd --zone=drop --permanent --add-source=47.240.0.0/14
firewall-cmd --zone=drop --permanent --add-source=47.244.0.0/15
firewall-cmd --zone=drop --permanent --add-source=47.246.0.0/16
firewall-cmd --zone=drop --permanent --add-source=5.188.210.0/24