Apex domains cannot have CNAME records.
Question and response
Question
dig winserversecure.com. NS
Answer
winserversecure.com. 3 NS pam.ns.cloudflare.com.
winserversecure.com. 3 NS jerome.ns.cloudflare.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0