Apex domains cannot have CNAME records.
Question and response
Question
dig eilishoils.com. NS
Answer
eilishoils.com. 5 NS ns2.eilishoils.com.
eilishoils.com. 5 NS ns1.eilishoils.com.
Authority
The response has no authority records.
Additional
ns1.eilishoils.com. 5 A 137.74.112.174
ns2.eilishoils.com. 5 A 51.254.84.65
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0