mx.hnneec.com has no NS records.
NS records for this zone are defined at hnneec.com.
NS records for this zone are defined at hnneec.com.
Question and response
Question
dig mx.hnneec.com. NS
Answer
The response has no answer records.
Authority
hnneec.com. 3600 SOA dns.hnneec.com. hostmaster.hnneec.com. 1470110411 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0