Apex domains cannot have CNAME records.
Question and response
Question
dig vivvaa.com. NS
Answer
vivvaa.com. 5 NS ns1.vivvaa.com.
vivvaa.com. 5 NS ns2.vivvaa.com.
Authority
The response has no authority records.
Additional
ns1.vivvaa.com. 5 A 107.6.173.2
ns2.vivvaa.com. 5 A 107.6.173.3
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0