Apex domains cannot have CNAME records.
Question and response
Question
dig geerntetindeutschland.com. NS
Answer
geerntetindeutschland.com. 5 NS ns-641.awsdns-16.net.
geerntetindeutschland.com. 5 NS ns-1103.awsdns-09.org.
geerntetindeutschland.com. 5 NS ns-1326.awsdns-37.org.
geerntetindeutschland.com. 5 NS ns-365.awsdns-45.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0