mxn.mxhichina.com has no NS records.
NS records for this zone are defined at mxhichina.com.
NS records for this zone are defined at mxhichina.com.
Question and response
Question
dig mxn.mxhichina.com. NS
Answer
The response has no answer records.
Authority
mxhichina.com. 600 SOA dns1.hichina.com. hostmaster.hichina.com. 2026010913 3600 1200 86400 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0