I have my website (https:/finnito.nz) using Cloudflare name servers for my DNS. I moved to Cloudflare some months ago from Hover and when I moved I deleted some old subdomain A records from Hover and did not recreate them in Cloudflare. For example, one of them, cpg.finnito.nz still resolves through to my server.
I have checked my Hover records and it definitely does no exist there, and nor in my Cloudflare records. I also do not have a vhost for that subdomain on my VPS.
It is not only cpg you also have a record for iamtheworldsgreatestrecordofalltimes
You simply must have a wildcard * record. Remove that and it should fix that issue, but keep in mind you will also have to create all other records you still want and which are not specifically defined.