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Gcore CDN vs Zube

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

APIGcore CDNNEW—ZubeNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key may be required for productionFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Gcore CDN vs Zube: common questions

Which is more reliable, Gcore CDN or Zube?

On our scheduled checks, Zube leads on measured uptime — Gcore CDN at —% versus Zube 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 Gcore CDN and Zube need an API key?

Both ask you to authenticate — Gcore CDN uses an API key and Zube 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 Gcore CDN and Zube from the browser?

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

Are Gcore CDN and Zube free for commercial use?

Gcore CDN has unclear commercial terms, and Zube 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.