mx.nimbrex.store has no NS records.
NS records for this zone are defined at nimbrex.store.
NS records for this zone are defined at nimbrex.store.
Question and response
Question
dig mx.nimbrex.store. NS
Answer
The response has no answer records.
Authority
nimbrex.store. 3600 SOA dns.nimbrex.store. hostmaster.nimbrex.store. 1158127520 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0