Apex domains cannot have CNAME records.
Question and response
Question
dig victoriavox.pl. NS
Answer
victoriavox.pl. 5 NS ns1.victoriavox.pl.
Authority
The response has no authority records.
Additional
ns1.victoriavox.pl. 5 A 178.19.106.204
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0