Apex domains cannot have CNAME records.
Question and response
Question
dig racecarcafe.com. NS
Answer
racecarcafe.com. 5 NS ns-58.awsdns-07.com.
racecarcafe.com. 5 NS ns-1900.awsdns-45.co.uk.
racecarcafe.com. 5 NS ns-1676.awsdns-17.co.uk.
racecarcafe.com. 5 NS ns-1447.awsdns-52.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0