Apex domains cannot have CNAME records.
Question and response
Question
dig centrtvorchestva.ru. NS
Answer
centrtvorchestva.ru. 5 NS jaxson.ns.cloudflare.com.
centrtvorchestva.ru. 5 NS crystal.ns.cloudflare.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0