dns4.hbidc.net has no NS records.
NS records for this zone are defined at hbidc.net.
NS records for this zone are defined at hbidc.net.
Question and response
Question
dig dns4.hbidc.net. NS
Answer
The response has no answer records.
Authority
hbidc.net. 600 SOA dns.bizcn.com. abuse.bizcn.com. 7 28800 14400 14400 600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0