Apex domains cannot have CNAME records.
Question and response
Question
dig esputnik.com.ua. NS
Answer
esputnik.com.ua. 5 NS ns-1872.awsdns-42.co.uk.
esputnik.com.ua. 5 NS ns-1189.awsdns-20.org.
esputnik.com.ua. 5 NS ns-442.awsdns-55.com.
esputnik.com.ua. 5 NS ns-826.awsdns-39.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0