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Colombia Public API vs PostcodeData.nl

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

APIColombia Public APINEW—PostcodeData.nlNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesno
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Colombia Public API vs PostcodeData.nl: common questions

Which is more reliable, Colombia Public API or PostcodeData.nl?

On our scheduled checks, PostcodeData.nl leads on measured uptime — Colombia Public API 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 Colombia Public API and PostcodeData.nl need an API key?

Neither needs a paid key — Colombia Public API 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 Colombia Public API and PostcodeData.nl from the browser?

Only Colombia Public API 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 Colombia Public API and PostcodeData.nl free for commercial use?

Colombia Public API 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.