Apex domains cannot have CNAME records.
Question and response
Question
dig mtasv.net. NS
Answer
mtasv.net. 5 NS ns-658.awsdns-18.net.
mtasv.net. 5 NS ns-42.awsdns-05.com.
mtasv.net. 5 NS ns-1730.awsdns-24.co.uk.
mtasv.net. 5 NS ns-1077.awsdns-06.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0