Apex domains cannot have CNAME records.
Question and response
Question
dig luvsigns.com. NS
Answer
luvsigns.com. 5 NS ns-314.awsdns-39.com.
luvsigns.com. 5 NS ns-1941.awsdns-50.co.uk.
luvsigns.com. 5 NS ns-1571.awsdns-04.co.uk.
luvsigns.com. 5 NS ns-425.awsdns-53.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0