Apex domains cannot have CNAME records.
Question and response
Question
dig kloeppelecke.com. NS
Answer
kloeppelecke.com. 5 NS ns-2013.awsdns-59.co.uk.
kloeppelecke.com. 5 NS ns-1104.awsdns-10.org.
kloeppelecke.com. 5 NS ns-629.awsdns-14.net.
kloeppelecke.com. 5 NS ns-853.awsdns-42.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0