Apex domains cannot have CNAME records.
Question and response
Question
dig relaxdelta.com. NS
Answer
relaxdelta.com. 5 NS ns-407.awsdns-50.com.
relaxdelta.com. 5 NS ns-1391.awsdns-45.org.
relaxdelta.com. 5 NS ns-386.awsdns-48.com.
relaxdelta.com. 5 NS ns-1041.awsdns-02.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0