Apex domains cannot have CNAME records.
Question and response
Question
dig ns02.nl. NS
Answer
ns02.nl. 4 NS intention.ns04.org.
ns02.nl. 4 NS intention.ns03.nl.
ns02.nl. 4 NS intention.ns01.nl.
ns02.nl. 4 NS intention.ns02.nl.
Authority
The response has no authority records.
Additional
intention.ns01.nl. 4 A 87.239.8.2
intention.ns02.nl. 4 A 87.239.9.3
intention.ns03.nl. 4 A 85.9.219.98
intention.ns04.org. 4 A 198.58.97.69
intention.ns01.nl. 4 AAAA 2001:678:be4:8:0:0:0:2
intention.ns02.nl. 4 AAAA 2001:678:be4:9:0:0:0:3
intention.ns03.nl. 4 AAAA 2a04:3544:1000:1510:8cc4:acff:fe62:1dad
intention.ns04.org. 4 AAAA 2600:3c00:0:0:f03c:91ff:feae:2d59
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0