Apex domains cannot have CNAME records.
Question and response
Question
dig delbonnel.com. NS
Answer
delbonnel.com. 2 NS ns-934.awsdns-52.net.
delbonnel.com. 2 NS ns-874.awsdns-45.net.
delbonnel.com. 2 NS ns-39.awsdns-04.com.
delbonnel.com. 2 NS ns-745.awsdns-29.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0