a.conoha-dns.com has no CNAME records.
Question and response
Question
dig a.conoha-dns.com. NS
Answer
The response has no answer records.
Authority
conoha-dns.com. 3476 SOA ns1.gmointernet.com. hostmaster.gmo.jp. 2022122300 1800 900 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0