Apex domains cannot have CNAME records.
Question and response
Question
dig ibizz.nl. NS
Answer
ibizz.nl. 5 NS autumn.ns.cloudflare.com.
ibizz.nl. 5 NS morgan.ns.cloudflare.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0