Apex domains cannot have CNAME records.
Question and response
Question
dig meer-bezoekers.org. NS
Answer
meer-bezoekers.org. 5 NS ns-1839.awsdns-37.co.uk.
meer-bezoekers.org. 5 NS ns-901.awsdns-48.net.
meer-bezoekers.org. 5 NS ns-400.awsdns-50.com.
meer-bezoekers.org. 5 NS ns-1254.awsdns-28.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0