Apex domains cannot have CNAME records.
Question and response
Question
dig alanov.ru. NS
Answer
alanov.ru. 5 NS ns.nsk.ru.
alanov.ru. 5 NS ns2.nsk.ru.
Authority
The response has no authority records.
Additional
ns.nsk.RU. 5 A 89.251.96.75
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0