Apex domains cannot have CNAME records.
Question and response
Question
dig winteraccess.net. NS
Answer
winteraccess.net. 5 NS dale.ns.cloudflare.com.
winteraccess.net. 5 NS nadia.ns.cloudflare.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0