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Administrative Divisions DB vs PostcodeData.nl

Same instrument, two spec sheets — measured, not claimed.

APIAdministrative Divisions DBNEW—PostcodeData.nlNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesno
Card requirednono
Commercial useunclearunclear
Data licenseUnverified (see repo)Unverified
Free tierFree, no API key required (static JSON via CDN)Free — limits not published
Rate limitNone (static files served over CDN)Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Administrative Divisions DB vs PostcodeData.nl: common questions

Which is more reliable, Administrative Divisions DB or PostcodeData.nl?

On our scheduled checks, PostcodeData.nl leads on measured uptime — Administrative Divisions DB at —% versus PostcodeData.nl 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 Administrative Divisions DB and PostcodeData.nl need an API key?

Neither needs a paid key — Administrative Divisions DB is callable with no signup, and PostcodeData.nl is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Administrative Divisions DB and PostcodeData.nl from the browser?

Only Administrative Divisions DB is browser-friendly — it returns CORS headers over HTTPS. PostcodeData.nl needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Administrative Divisions DB and PostcodeData.nl free for commercial use?

Administrative Divisions DB has unclear commercial terms, and PostcodeData.nl 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.