Apex domains cannot have CNAME records.
Question and response
Question
dig griggscoffee.com. NS
Answer
griggscoffee.com. 5 NS ns-1309.awsdns-35.org.
griggscoffee.com. 5 NS ns-695.awsdns-22.net.
griggscoffee.com. 5 NS ns-1156.awsdns-16.org.
griggscoffee.com. 5 NS ns-1613.awsdns-09.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0