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Open Topo Data vs Administrative Divisions DB

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

APIOpen Topo DataNEW—Administrative Divisions DBNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified (see repo)
Free tierFree — limits not publishedFree, no API key required (static JSON via CDN)
Rate limitUnpublishedNone (static files served over CDN)
In directory since2026-07-052026-07-05
operationalpartialdownno data

Open Topo Data vs Administrative Divisions DB: common questions

Which is more reliable, Open Topo Data or Administrative Divisions DB?

On our scheduled checks, Administrative Divisions DB leads on measured uptime — Open Topo Data at —% versus Administrative Divisions DB 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 Open Topo Data and Administrative Divisions DB need an API key?

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

Can I call Open Topo Data and Administrative Divisions DB from the browser?

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

Are Open Topo Data and Administrative Divisions DB free for commercial use?

Open Topo Data has unclear commercial terms, and Administrative Divisions DB 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.