Apex domains cannot have CNAME records.
Question and response
Question
dig martielvebak.com. NS
Answer
martielvebak.com. 4 NS ns1.martielvebak.com.
martielvebak.com. 4 NS ns2.martielvebak.com.
Authority
The response has no authority records.
Additional
ns1.martielvebak.com. 4 A 103.249.31.15
ns2.martielvebak.com. 4 A 64.31.52.4
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0