Working with Spanish IBANs or building an address form for Spain?

You probably need two things that are surprisingly hard to find in a clean, developer-ready format:

A bank code lookup table (what bank does 2100 in an IBAN mean?)

A province/postal code reference (what province is 28001? What autonomous community?)

I've compiled both from public sources (Banco de España, INE, Correos) into CSV and JSON files you can drop straight into your project.