Apex domains cannot have CNAME records.
Question and response
Question
dig ishinoayumi.com. NS
Answer
ishinoayumi.com. 5 NS ns-124.awsdns-15.com.
ishinoayumi.com. 5 NS ns-1337.awsdns-39.org.
ishinoayumi.com. 5 NS ns-1142.awsdns-14.org.
ishinoayumi.com. 5 NS ns-1999.awsdns-57.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0