Apex domains cannot have CNAME records.
Question and response
Question
dig amerloc.com. NS
Answer
amerloc.com. 2 NS ns-1670.awsdns-16.co.uk.
amerloc.com. 2 NS ns-299.awsdns-37.com.
amerloc.com. 2 NS ns-750.awsdns-29.net.
amerloc.com. 2 NS ns-966.awsdns-56.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0