udnstaging.onead.com.tw has no NS records.
NS records for this zone are defined at onead.com.tw.
NS records for this zone are defined at onead.com.tw.
Question and response
Question
dig udnstaging.onead.com.tw.udndns.net. NS
Answer
The response has no answer records.
Authority
net. 900 SOA a.gtld-servers.net. nstld.verisign-grs.com. 1773328221 1800 900 604800 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0