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