mx.kperuprints.com has no NS records.
NS records for this zone are defined at kperuprints.com.
NS records for this zone are defined at kperuprints.com.
Question and response
Question
dig mx.kperuprints.com. NS
Answer
The response has no answer records.
Authority
kperuprints.com. 3600 SOA dns.kperuprints.com. hostmaster.kperuprints.com. 1679246037 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0