Apex domains cannot have CNAME records.
Question and response
Question
dig scnem.com. NS
Answer
scnem.com. 5 NS ns-1564.awsdns-03.co.uk.
scnem.com. 5 NS ns-288.awsdns-36.com.
scnem.com. 5 NS ns-704.awsdns-24.net.
scnem.com. 5 NS ns-1532.awsdns-63.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0