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adresse.data.gouv.fr vs PostcodeData.nl

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

APIadresse.data.gouv.frHEALTHY88PostcodeData.nlHEALTHY91
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms853692
P95 · ms23101989
Authnonenone
CORSyesyes
HTTPSyesno
Card requirednono
Commercial useyesunclear
Data licenseLicence Ouverte / ODbL (Base Adresse Nationale)Unverified
Free tierFree, no API keyFree — limits not published
Rate limit50 requests/second per IP (documented)Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

adresse.data.gouv.fr vs PostcodeData.nl: common questions

Which is more reliable, adresse.data.gouv.fr or PostcodeData.nl?

Both are neck-and-neck — adresse.data.gouv.fr and PostcodeData.nl each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, adresse.data.gouv.fr or PostcodeData.nl?

PostcodeData.nl has the lower median latency in our checks — adresse.data.gouv.fr responds in 853 ms versus PostcodeData.nl at 692 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do adresse.data.gouv.fr and PostcodeData.nl need an API key?

Neither needs a paid key — adresse.data.gouv.fr 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 adresse.data.gouv.fr and PostcodeData.nl from the browser?

Only adresse.data.gouv.fr 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 adresse.data.gouv.fr and PostcodeData.nl free for commercial use?

adresse.data.gouv.fr allows commercial use on its free tier, 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.