"127.1.168.192.in-addr.arpa" => "192.168.1.127" "1.168.192.in-addr.arpa" => "192.168.1.0" "168.192.in-addr.arpa" => "192.168.0.0" "192.in-addr.arpa" => "192.0.0.0" "in-addr.arpa" => "0.0.0.0"
[Validate]