Apex domains cannot have CNAME records.
Question and response
Question
dig dataix.eu. NS
Answer
dataix.eu. 1 NS ns2.gblnet.ru.
dataix.eu. 1 NS ns.gblnet.ru.
Authority
The response has no authority records.
Additional
ns.GbLNET.ru. 1 A 95.140.80.1
ns2.GbLNET.ru. 1 A 95.140.83.1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0