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City, Nantes Open Data vs FastDOL

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

APICity, Nantes Open DataNEW—FastDOLNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

City, Nantes Open Data vs FastDOL: common questions

Which is more reliable, City, Nantes Open Data or FastDOL?

On our scheduled checks, FastDOL leads on measured uptime — City, Nantes Open Data at —% versus FastDOL 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 City, Nantes Open Data and FastDOL need an API key?

Both ask you to authenticate — City, Nantes Open Data uses an API key and FastDOL uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call City, Nantes Open Data and FastDOL from the browser?

Only City, Nantes Open Data is browser-friendly — it returns CORS headers over HTTPS. FastDOL needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are City, Nantes Open Data and FastDOL free for commercial use?

City, Nantes Open Data has unclear commercial terms, and FastDOL 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.