Apex domains cannot have CNAME records.
Question and response
Question
dig localnet.ua. NS
Answer
localnet.ua. 5 NS nsa2.srv53.net.
localnet.ua. 5 NS nsd1.srv53.com.
localnet.ua. 5 NS nsb3.srv53.com.
localnet.ua. 5 NS nsc2.srv53.org.
localnet.ua. 5 NS nsc4.srv53.com.
localnet.ua. 5 NS nsd2.srv53.org.
localnet.ua. 5 NS nsb2.srv53.net.
localnet.ua. 5 NS nsa2.srv53.org.
localnet.ua. 5 NS nsa4.srv53.com.
localnet.ua. 5 NS nsc3.srv53.net.
localnet.ua. 5 NS nsd2.srv53.net.
localnet.ua. 5 NS nsb4.srv53.org.
Authority
The response has no authority records.
Additional
nsd1.srv53.com. 5 A 89.184.64.99
nsd1.srv53.com. 5 AAAA 2a02:2278:70eb:298:89:184:64:99
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0