Apex domains cannot have CNAME records.
Question and response
Question
dig viva.net.do. NS
Answer
viva.net.do. 4 NS NS1.TRILOGY.NET.DO.
Authority
The response has no authority records.
Additional
ns1.trilogy.net.do. 4 A 190.8.32.80
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0