Postcodes.io vs Administrative Divisions DB
Same instrument, two spec sheets — measured, not claimed.
Postcodes.io vs Administrative Divisions DB: common questions
Which is more reliable, Postcodes.io or Administrative Divisions DB?
On our scheduled checks, Administrative Divisions DB leads on measured uptime — Postcodes.io at —% versus Administrative Divisions DB at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Do Postcodes.io and Administrative Divisions DB need an API key?
Neither needs a paid key — Postcodes.io is callable with no signup, and Administrative Divisions DB is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Postcodes.io and Administrative Divisions DB from the browser?
Yes — both Postcodes.io and Administrative Divisions DB send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.
Are Postcodes.io and Administrative Divisions DB free for commercial use?
Postcodes.io has unclear commercial terms, and Administrative Divisions DB has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.