mx.quentavirox.com has no NS records.
NS records for this zone are defined at quentavirox.com.
NS records for this zone are defined at quentavirox.com.
Question and response
Question
dig mx.quentavirox.com. NS
Answer
The response has no answer records.
Authority
quentavirox.com. 3600 SOA dns.quentavirox.com. hostmaster.quentavirox.com. 1584748108 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0