Apex domains cannot have CNAME records.
Question and response
Question
dig w3e.pl. NS
Answer
w3e.pl. 5 NS ns1.domenomania.pl.
w3e.pl. 5 NS ns2.domenomania.pl.
Authority
The response has no authority records.
Additional
ns1.domenomania.pl. 5 A 138.201.110.180
ns2.domenomania.pl. 5 A 188.116.40.210
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0