Apex domains cannot have CNAME records.
Question and response
Question
dig formatooo.ru. NS
Answer
formatooo.ru. 5 NS ns.formatooo.ru.
formatooo.ru. 5 NS ns1.formatooo.ru.
Authority
The response has no authority records.
Additional
ns.formatooo.ru. 5 A 91.107.123.1
ns1.formatooo.ru. 5 A 213.159.214.146
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0