Apex domains cannot have CNAME records.
Question and response
Question
dig myahec.com. NS
Answer
myahec.com. 5 NS ns-1234.awsdns-26.org.
myahec.com. 5 NS ns-982.awsdns-58.net.
myahec.com. 5 NS ns-373.awsdns-46.com.
myahec.com. 5 NS ns-1578.awsdns-05.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0