mx.bytronics.net has no NS records.
NS records for this zone are defined at bytronics.net.
NS records for this zone are defined at bytronics.net.
Question and response
Question
dig mx.bytronics.net. NS
Answer
The response has no answer records.
Authority
bytronics.net. 3600 SOA dns.bytronics.net. hostmaster.bytronics.net. 1929360117 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0