mx.nftconceptual.com has no NS records.
NS records for this zone are defined at nftconceptual.com.
NS records for this zone are defined at nftconceptual.com.
Question and response
Question
dig mx.nftconceptual.com. NS
Answer
The response has no answer records.
Authority
nftconceptual.com. 3600 SOA dns.nftconceptual.com. hostmaster.nftconceptual.com. 1177796477 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0