Apex domains cannot have CNAME records.
Question and response
Question
dig kg. NS
Answer
kg. 5 NS KG.CCTLD.AUTHDNS.RIPE.NET.
kg. 5 NS NS2.kg.
kg. 5 NS NS.kg.
Authority
The response has no authority records.
Additional
ns.kg. 172695 A 195.38.160.36
ns2.kg. 62854 A 195.38.160.38
ns.kg. 172695 AAAA 2a11:a380:0:0:195:38:160:36
ns2.kg. 62854 AAAA 2a11:a380:0:0:195:38:160:38
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0