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Istanbul (İBB) Open Data vs OpenRegistry

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

APIIstanbul (İBB) Open DataDEAD0OpenRegistryDYING86
Uptime · 30d
Uptime · 90d0.0%80.0%
Uptime · 30d0.0%43.3%
P50 · ms—241
P95 · ms—1132
AuthnoneapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified (varies per dataset)Unverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Istanbul (İBB) Open Data vs OpenRegistry: common questions

Which is more reliable, Istanbul (İBB) Open Data or OpenRegistry?

On our scheduled checks, OpenRegistry leads on measured uptime — Istanbul (İBB) Open Data at 0.0% versus OpenRegistry at 80.0% 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 Istanbul (İBB) Open Data and OpenRegistry need an API key?

Istanbul (İBB) Open Data needs no key, while OpenRegistry requires a free API key. If you want to start calling without signup, reach for Istanbul (İBB) Open Data first.

Can I call Istanbul (İBB) Open Data and OpenRegistry from the browser?

Neither sends browser-friendly CORS headers reliably, so call Istanbul (İBB) Open Data and OpenRegistry from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Istanbul (İBB) Open Data and OpenRegistry free for commercial use?

Istanbul (İBB) Open Data 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.