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adresse.data.gouv.fr vs Ducks Unlimited

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

APIadresse.data.gouv.frHEALTHY90Ducks UnlimitedHEALTHY92
Uptime · 30d
Uptime · 90d99.44%99.44%
Uptime · 30d98.3%100%
P50 · ms461395
P95 · ms24862202
Authnonenone
CORSyesyes
HTTPSyesyes
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Rate limit50 requests/second per IP (documented)Unpublished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 Ducks Unlimited: common questions

Which is more reliable, adresse.data.gouv.fr or Ducks Unlimited?

Both are neck-and-neck — adresse.data.gouv.fr and Ducks Unlimited each measure 99.44% 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 Ducks Unlimited?

Ducks Unlimited has the lower median latency in our checks — adresse.data.gouv.fr responds in 461 ms versus Ducks Unlimited at 395 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 Ducks Unlimited need an API key?

Neither needs a paid key — adresse.data.gouv.fr is callable with no signup, and Ducks Unlimited is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call adresse.data.gouv.fr and Ducks Unlimited from the browser?

Yes — both adresse.data.gouv.fr and Ducks Unlimited 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 adresse.data.gouv.fr and Ducks Unlimited free for commercial use?

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