Apex domains cannot have CNAME records.
Question and response
Question
dig vinecaves.com. NS
Answer
vinecaves.com. 5 NS ns-588.awsdns-09.net.
vinecaves.com. 5 NS ns-1444.awsdns-52.org.
vinecaves.com. 5 NS ns-1958.awsdns-52.co.uk.
vinecaves.com. 5 NS ns-3.awsdns-00.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0