Apex domains cannot have CNAME records.
Question and response
Question
dig KRASINFO.RU. NS
Answer
krasinfo.ru. 5 NS ans2.multi-net.ru.
krasinfo.ru. 5 NS ans1.multi-net.ru.
Authority
The response has no authority records.
Additional
ans1.multi-net.ru. 5 A 89.105.146.144
ans2.multi-net.ru. 5 A 89.105.138.41
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0