mx.ramonaq.com has no NS records.
NS records for this zone are defined at ramonaq.com.
NS records for this zone are defined at ramonaq.com.
Question and response
Question
dig mx.ramonaq.com. NS
Answer
The response has no answer records.
Authority
ramonaq.com. 3600 SOA dns.ramonaq.com. hostmaster.ramonaq.com. 1442762498 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0