Apex domains cannot have CNAME records.
Question and response
Question
dig ukraine-domain.com. NS
Answer
ukraine-domain.com. 4 NS ns2.ukraine-domain.com.
ukraine-domain.com. 4 NS ns1.ukraine-domain.com.
Authority
The response has no authority records.
Additional
ns1.ukraine-domain.com. 4 A 77.120.117.18
ns2.ukraine-domain.com. 4 A 195.149.112.1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0