Apex domains cannot have CNAME records.
Question and response
Question
dig hoster.kz. NS
Answer
hoster.kz. 2 NS ns3.hoster.kz.
hoster.kz. 2 NS ns4.hoster.kz.
hoster.kz. 2 NS ns1.hoster.kz.
hoster.kz. 2 NS ns2.hoster.kz.
Authority
The response has no authority records.
Additional
ns1.hoster.kz. 2 A 185.116.195.38
ns2.hoster.kz. 2 A 185.121.81.104
ns3.hoster.kz. 2 A 89.35.125.31
ns4.hoster.kz. 2 A 185.136.99.224
ns4.hoster.kz. 2 AAAA 2a06:fb00:1:0:0:0:4:224
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0