hk1sgwl02.wtthk.com.hk has no NS records.
NS records for this zone are defined at wtthk.com.hk.
NS records for this zone are defined at wtthk.com.hk.
Question and response
Question
dig hk1sgwl02.wtthk.com.hk. NS
Answer
The response has no answer records.
Authority
wtthk.com.hk. 7200 SOA ns1.hkbn.net. sysadm.ns1.hkbn.net. 2026012801 1800 900 86400 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0