Apex domains cannot have CNAME records.
Question and response
Question
dig imena.com.ua. NS
Answer
imena.com.ua. 5 NS nsd3.srv53.org.
imena.com.ua. 5 NS nsc1.srv53.com.
imena.com.ua. 5 NS nsa3.srv53.org.
imena.com.ua. 5 NS nsb3.srv53.com.
imena.com.ua. 5 NS nsa4.srv53.net.
imena.com.ua. 5 NS nsc3.srv53.net.
imena.com.ua. 5 NS nsb2.srv53.net.
imena.com.ua. 5 NS nsa4.srv53.com.
imena.com.ua. 5 NS nsc1.srv53.org.
imena.com.ua. 5 NS nsb3.srv53.org.
imena.com.ua. 5 NS nsd2.srv53.net.
imena.com.ua. 5 NS nsd4.srv53.com.
Authority
The response has no authority records.
Additional
nsc1.srv53.com. 5 A 78.27.225.73
nsc1.srv53.org. 5 A 78.27.225.71
nsd3.srv53.org. 5 A 89.184.64.96
nsc1.srv53.com. 5 AAAA 2a02:2279:0:1201:78:27:225:73
nsc1.srv53.org. 5 AAAA 2a02:2279:0:1201:78:27:225:71
nsd3.srv53.org. 5 AAAA 2a02:2278:70eb:298:89:184:64:96
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0