Apex domains cannot have CNAME records.
Question and response
Question
dig wp-cloud.fi. NS
Answer
wp-cloud.fi. 5 NS gordon.ns.cloudflare.com.
wp-cloud.fi. 5 NS pola.ns.cloudflare.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0