ans3.hinet.tw has no CNAME records.
Question and response
Question
dig ans3.hinet.tw. NS
Answer
The response has no answer records.
Authority
hinet.tw. 1340 SOA ns1.hinet.tw. hostmaster.hinet.tw. 2022021879 300 1800 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0