Apex domains cannot have CNAME records.
Question and response
Question
dig alphamlm.com. NS
Answer
alphamlm.com. 5 NS ns-1289.awsdns-33.org.
alphamlm.com. 5 NS ns-1288.awsdns-33.org.
alphamlm.com. 5 NS ns-1238.awsdns-26.org.
alphamlm.com. 5 NS ns-1709.awsdns-21.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0