Apex domains cannot have CNAME records.
Question and response
Question
dig grisedesign.com. NS
Answer
grisedesign.com. 2 NS ns-138.awsdns-17.com.
grisedesign.com. 2 NS ns-966.awsdns-56.net.
grisedesign.com. 2 NS ns-890.awsdns-47.net.
grisedesign.com. 2 NS ns-1611.awsdns-09.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0