Apex domains cannot have CNAME records.
Question and response
Question
dig INTRALINE.ru. NS
Answer
intraline.ru. 4 NS ns20.24hc.ru.
intraline.ru. 4 NS ns10.24hc.ru.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0