custom subdomain false positive warning

I get this warning on every check in to

“Your site’s DNS settings are using a custom subdomain,, that’s set up as an A record. We recommend you change this to a CNAME record pointing at For more information, see”

There is no wildcard set up. is served from is served from

everything works as expected, and I hope to add more tools with more subdomains as I continue migrating projects into this new structure.

Is there a way to turn this warning off?