Apex domains cannot have CNAME records.
Question and response
Question
dig gmhost.com.ua. NS
Answer
gmhost.com.ua. 2 NS keanu.ns.cloudflare.com.
gmhost.com.ua. 2 NS georgia.ns.cloudflare.com.
Authority
The response has no authority records.
Additional
keanu.ns.cloudflare.com. 4 A 108.162.195.167
keanu.ns.cloudflare.com. 4 A 162.159.44.167
keanu.ns.cloudflare.com. 4 A 172.64.35.167
georgia.ns.cloudflare.com. 4 A 108.162.194.48
georgia.ns.cloudflare.com. 4 A 162.159.38.48
georgia.ns.cloudflare.com. 4 A 172.64.34.48
keanu.ns.cloudflare.com. 4 AAAA 2606:4700:58:0:0:0:a29f:2ca7
keanu.ns.cloudflare.com. 4 AAAA 2803:f800:50:0:0:0:6ca2:c3a7
keanu.ns.cloudflare.com. 4 AAAA 2a06:98c1:50:0:0:0:ac40:23a7
georgia.ns.cloudflare.com. 4 AAAA 2606:4700:50:0:0:0:a29f:2630
georgia.ns.cloudflare.com. 4 AAAA 2803:f800:50:0:0:0:6ca2:c230
georgia.ns.cloudflare.com. 4 AAAA 2a06:98c1:50:0:0:0:ac40:2230
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0