Apex domains cannot have CNAME records.
Question and response
Question
dig csa.kz. NS
Answer
csa.kz. 5 NS ns2.ps.kz.
csa.kz. 5 NS ns3.ps.kz.
csa.kz. 5 NS ns1.ps.kz.
Authority
The response has no authority records.
Additional
ns1.ps.kz. 5 A 195.210.46.194
ns2.ps.kz. 5 A 195.210.46.172
ns3.ps.kz. 5 A 31.210.174.104
ns1.ps.kz. 5 AAAA 2a00:5da0:0:1:0:0:0:194
ns2.ps.kz. 5 AAAA 2a00:5da0:1:1:0:0:0:172
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0