Apex domains cannot have CNAME records.
Question and response
Question
dig reyvarbc.com. NS
Answer
reyvarbc.com. 5 NS ns740.websitewelcome.com.
reyvarbc.com. 5 NS ns739.websitewelcome.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0