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City, Berlin vs OpenRegistry

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

APICity, BerlinNEW—OpenRegistryNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseVaries per dataset (many CC-BY / dl-de-by-2.0)Unverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

City, Berlin vs OpenRegistry: common questions

Which is more reliable, City, Berlin or OpenRegistry?

On our scheduled checks, OpenRegistry leads on measured uptime — City, Berlin at —% versus OpenRegistry 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, Berlin and OpenRegistry need an API key?

City, Berlin needs no key, while OpenRegistry requires a free API key. If you want to start calling without signup, reach for City, Berlin first.

Can I call City, Berlin and OpenRegistry from the browser?

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

Are City, Berlin and OpenRegistry free for commercial use?

City, Berlin has unclear commercial terms, and OpenRegistry 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.