mx.qomtraviz.com has no NS records.
NS records for this zone are defined at qomtraviz.com.
NS records for this zone are defined at qomtraviz.com.
Question and response
Question
dig mx.qomtraviz.com. NS
Answer
The response has no answer records.
Authority
qomtraviz.com. 3600 SOA dns.qomtraviz.com. hostmaster.qomtraviz.com. 1535862249 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0