Apex domains cannot have CNAME records.
Question and response
Question
dig pautina.ua. NS
Answer
pautina.ua. 5 NS ns314.inhostedns.org.
pautina.ua. 5 NS ns214.inhostedns.net.
pautina.ua. 5 NS ns114.inhostedns.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0