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