Apex domains cannot have CNAME records.
Question and response
Question
dig uz. NS
Answer
uz. 5 NS ns3.uz.
uz. 5 NS ns7.uz.
uz. 5 NS ns5.uz.
uz. 5 NS ns6.uz.
uz. 5 NS ns2.uz.
uz. 5 NS ns8.uz.
uz. 5 NS ns1.uz.
uz. 5 NS ns4.uz.
Authority
The response has no authority records.
Additional
ns1.uz. 77278 A 91.212.89.244
ns2.uz. 140175 A 83.221.179.222
ns3.uz. 140175 A 185.74.6.29
ns4.uz. 77278 A 83.69.136.139
ns5.uz. 77278 A 217.12.81.129
ns6.uz. 50447 A 80.241.0.234
ns6.uz. 50447 A 83.69.129.33
ns7.uz. 140175 A 72.167.34.137
ns8.uz. 77278 A 91.212.89.233
ns3.uz. 140175 AAAA 2a05:45c7:e001:0:0:0:0:4
ns6.uz. 50447 AAAA 2a01:7640:0:d:0:0:0:2
ns7.uz. 140175 AAAA 2603:3:6101:8ac0:0:0:0:0
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0