mx.huifbed.com has no NS records.
NS records for this zone are defined at huifbed.com.
NS records for this zone are defined at huifbed.com.
Question and response
Question
dig mx.huifbed.com. NS
Answer
The response has no answer records.
Authority
huifbed.com. 3600 SOA dns.huifbed.com. hostmaster.huifbed.com. 1628512997 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0