OpenPLZ API

Overview

OpenPLZ API is a free public API in the Geocoding category. A public street and postal code directory for Austria, Germany, Liechtenstein and Switzerland via an open REST API.

Geocoding APIs turn addresses into coordinates and back — essential for maps, logistics, and location-aware features.

You can use this API in prototypes, side projects, and production applications — just keep the provider’s usage policy in mind.

Authentication

OpenPLZ API requires no authentication — you can start calling it directly, which makes it great for quick experiments and client-side demos.

HTTPS & CORS

• HTTPS: supported — traffic to OpenPLZ API is encrypted, so it is safe to use from production apps.
• CORS: unknown — if you plan to call OpenPLZ API from the browser, verify CORS support in the official docs or with a quick test request.

Getting Started

1. Read the official documentation: https://www.openplzapi.org/
2. Make a test request with curl or your favourite HTTP client.

Rate Limits & Notes

• Rate limits, quotas, and free-tier terms are defined by the provider — always check the official documentation for OpenPLZ API before scaling up.
• The upstream listing is community-maintained; fields like auth, HTTPS and CORS reflect the state at listing time and may change.

FAQ

Does OpenPLZ API require an API key?

No — OpenPLZ API is listed as a no-auth API, so you can call it directly.