Apex domains cannot have CNAME records.
Question and response
Question
dig unix-solutions.be. NS
Answer
unix-solutions.be. 1 NS ns2.unix-solutions.com.
unix-solutions.be. 1 NS ns1.unix-solutions.be.
Authority
The response has no authority records.
Additional
ns1.unix-solutions.be. 1 A 109.68.160.244
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0