Apex domains cannot have CNAME records.
Question and response
Question
dig andriesvandenabeele.net. NS
Answer
andriesvandenabeele.net. 5 NS ns1.andriesvandenabeele.net.
andriesvandenabeele.net. 5 NS ns2.andriesvandenabeele.net.
Authority
The response has no authority records.
Additional
ns1.andriesvandenabeele.net. 5 A 91.246.221.164
ns2.andriesvandenabeele.net. 5 A 57.128.132.84
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0