Apex domains cannot have CNAME records.
Question and response
Question
dig sivarestilo.com. NS
Answer
sivarestilo.com. 4 NS ns2.sivarestilo.com.
sivarestilo.com. 4 NS ns1.sivarestilo.com.
Authority
The response has no authority records.
Additional
ns1.sivarestilo.com. 4 A 23.231.25.48
ns2.sivarestilo.com. 4 A 61.97.247.40
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0