Apex domains cannot have CNAME records.
Question and response
Question
dig amateurtempel.com. NS
Answer
amateurtempel.com. 5 NS ns-1904.awsdns-46.co.uk.
amateurtempel.com. 5 NS ns-548.awsdns-04.net.
amateurtempel.com. 5 NS ns-147.awsdns-18.com.
amateurtempel.com. 5 NS ns-949.awsdns-54.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0