Apex domains cannot have CNAME records.
Question and response
Question
dig wawtel.pl. NS
Answer
wawtel.pl. 2 NS dns2.home.pl.
wawtel.pl. 2 NS dns3.home.pl.
wawtel.pl. 2 NS dns.home.pl.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0