Apex domains cannot have CNAME records.
Question and response
Question
dig ch.govorit.ru. NS
Answer
ch.govorit.ru. 5 NS mx1.ch.govorit.ru.
ch.govorit.ru. 5 NS mx2.ch.govorit.ru.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0