Apex domains cannot have CNAME records.
Question and response
Question
dig uzpak.uz. NS
Answer
uzpak.uz. 5 NS ns.uzpak.uz.
uzpak.uz. 5 NS ns3.uzpak.uz.
uzpak.uz. 5 NS ns2.uzpak.uz.
uzpak.uz. 5 NS ns1.uzpak.uz.
Authority
The response has no authority records.
Additional
ns.uzpak.uz. 5 A 195.158.0.1
ns1.uzpak.uz. 5 A 195.158.0.3
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0