mx.curtisgenerator.com has no NS records.
NS records for this zone are defined at curtisgenerator.com.
NS records for this zone are defined at curtisgenerator.com.
Question and response
Question
dig mx.curtisgenerator.com. NS
Answer
The response has no answer records.
Authority
curtisgenerator.com. 3600 SOA dns.curtisgenerator.com. hostmaster.curtisgenerator.com. 1822469016 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0