Apex domains cannot have CNAME records.
Question and response
Question
dig atrait.eu. NS
Answer
atrait.eu. 4 NS 13.39.175.88.
atrait.eu. 4 NS ns517627.ip-158-69-240.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0