Apex domains cannot have CNAME records.
Question and response
Question
dig malmoviolinatelje.com. NS
Answer
malmoviolinatelje.com. 5 NS ns-721.awsdns-26.net.
malmoviolinatelje.com. 5 NS ns-1765.awsdns-28.co.uk.
malmoviolinatelje.com. 5 NS ns-1332.awsdns-38.org.
malmoviolinatelje.com. 5 NS ns-1903.awsdns-45.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0