I wanted free subdomains for my project. Ended up building my own registry in Python (and fighting DNS, Git and Cloudflare along the way)

I registered fluxcast.dev for my Linux casting project (FluxCast). One apex record was enough, the rest of the subdomains were just wasting away.

Then I remembered is-a.dev. The idea of getting free subdomains through a simple GitHub PR looked so good that I decided to build my own version.

"Sounds like an evening project," I thought.

It wasn’t.

The validation rabbit hole