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AZ511 vs OpenVan

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

APIAZ511UNMONITORED—OpenVanNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — no auth
Rate limitUnpublished120 req/window · 119 remaining
In directory since2026-07-052026-07-05
operationalpartialdownno data

AZ511 vs OpenVan: common questions

Which is more reliable, AZ511 or OpenVan?

Only OpenVan is on our probe schedule so far (—% uptime over 90 days). The other is catalogued but not yet live-checked, so we can't compare measured reliability head-to-head — check the uncovered API's own status page for now.

Do AZ511 and OpenVan need an API key?

OpenVan needs no key, while AZ511 requires a free API key. If you want to start calling without signup, reach for OpenVan first.

Can I call AZ511 and OpenVan from the browser?

Only OpenVan is browser-friendly — it returns CORS headers over HTTPS. AZ511 needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are AZ511 and OpenVan free for commercial use?

AZ511 has unclear commercial terms, and OpenVan 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.