mx.xibdix.com has no NS records.
NS records for this zone are defined at xibdix.com.
NS records for this zone are defined at xibdix.com.
Question and response
Question
dig mx.xibdix.com. NS
Answer
The response has no answer records.
Authority
xibdix.com. 3600 SOA dns.xibdix.com. hostmaster.xibdix.com. 1470157375 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0