admin.ans.ja.net has no CNAME records.
Question and response
Question
dig admin.ans.ja.net. NS
Answer
The response has no answer records.
Authority
ans.ja.net. 3600 SOA ns10.ja.net. hostmaster.ns10.ja.net. 2023082406 43200 3600 3600000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0