Apex domains cannot have CNAME records.
Question and response
Question
dig weba.net. NS
Answer
weba.net. 5 NS ns2.weba.ru.
weba.net. 5 NS ns1.weba.ru.
Authority
The response has no authority records.
Additional
ns1.weba.ru. 5 A 37.153.0.5
ns2.weba.ru. 5 A 37.153.1.2
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0