Apex domains cannot have CNAME records.
Question and response
Question
dig kiv.GBlNET.net. NS
Answer
kiv.gblnet.net. 3 NS ns.gblnet.ru.
kiv.gblnet.net. 3 NS ns2.gblnet.ru.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0