Apex domains cannot have CNAME records.
Question and response
Question
dig kessai.info. NS
Answer
kessai.info. 5 NS dns1.kessai.info.
kessai.info. 5 NS 2nd.dnsv.jp.
Authority
The response has no authority records.
Additional
dns1.kessai.info. 5 A 210.190.116.101
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0