Apex domains cannot have CNAME records.
Question and response
Question
dig nwvsn.com. NS
Answer
nwvsn.com. 5 NS ns-127.awsdns-15.com.
nwvsn.com. 5 NS ns-462.awsdns-57.com.
nwvsn.com. 5 NS ns-160.awsdns-20.com.
nwvsn.com. 5 NS ns-1484.awsdns-57.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0