Adding subdomain, pointing to different server (not Netlify), how?

Hi! I’m happily using Netlify, and I’m on the Netlify DNS (i think) with the custom domain option (

But, I’m hosting a database on a different server (, and I’ve installed a REST api on that, accessible via HTTP. (To be exact, PostgreSQL+PostgREST). I now need to add SSL, and in order to do so, I need a hostname.

Thus, I’d like to have a subdomain, point to that server. But I’m getting so confused by all the DNS options. Do I have to set this up at Netlify? Or perhaps at Porkbun, where I got my domain?

Any help is greatly appreciated!

Netlify site name:

A post was merged into an existing topic: Not sure how to set up a Netlify subdomain