mjml-test.node.kunleisys.com has no NS records.
NS records for this zone are defined at kunleisys.com.
NS records for this zone are defined at kunleisys.com.
Question and response
Question
dig mjml-test.node.kunleisys.com. NS
Answer
The response has no answer records.
Authority
kunleisys.com. 300 SOA ns1.design69.net. hostmaster.design69.net. 2014071577 10800 3600 604800 300
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0