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