mx.frumquvion.net has no NS records.
NS records for this zone are defined at frumquvion.net.
NS records for this zone are defined at frumquvion.net.
Question and response
Question
dig mx.frumquvion.net. NS
Answer
The response has no answer records.
Authority
frumquvion.net. 3600 SOA dns.frumquvion.net. hostmaster.frumquvion.net. 1581184499 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0