Apex domains cannot have CNAME records.
Question and response
Question
dig caitolone.com. NS
Answer
caitolone.com. 5 NS ns-1152.awsdns-16.org.
caitolone.com. 5 NS ns-1943.awsdns-50.co.uk.
caitolone.com. 5 NS ns-1752.awsdns-27.co.uk.
caitolone.com. 5 NS ns-1658.awsdns-15.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0