mail.design69.net has no NS records.
NS records for this zone are defined at design69.net.
NS records for this zone are defined at design69.net.
Question and response
Question
dig mail.design69.net. NS
Answer
The response has no answer records.
Authority
design69.net. 3600 SOA ns1.design69.net. dns.design69.net. 2017060136 10800 3600 604800 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0