mx.refaccionesmiranda.com has no NS records.
NS records for this zone are defined at refaccionesmiranda.com.
NS records for this zone are defined at refaccionesmiranda.com.
Question and response
Question
dig mx.refaccionesmiranda.com. NS
Answer
The response has no answer records.
Authority
refaccionesmiranda.com. 3600 SOA dns.refaccionesmiranda.com. hostmaster.refaccionesmiranda.com. 1840980122 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0