Apex domains cannot have CNAME records.
Question and response
Question
dig alertfind.com. NS
Answer
alertfind.com. 5 NS ns-577.awsdns-08.net.
alertfind.com. 5 NS ns-1763.awsdns-28.co.uk.
alertfind.com. 5 NS ns-399.awsdns-49.com.
alertfind.com. 5 NS ns-1379.awsdns-44.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0