Apex domains cannot have CNAME records.
Question and response
Question
dig actus-info.pl. NS
Answer
actus-info.pl. 4 NS ns02.actus-info.pl.
actus-info.pl. 4 NS ns01.actus-info.pl.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0