mx.linuramoto.info has no NS records.
NS records for this zone are defined at linuramoto.info.
NS records for this zone are defined at linuramoto.info.
Question and response
Question
dig mx.linuramoto.info. NS
Answer
The response has no answer records.
Authority
linuramoto.info. 3600 SOA dns.linuramoto.info. hostmaster.linuramoto.info. 1517331898 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0