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Nexmo API vs Kickbox

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

APINexmo APIUNMONITORED—KickboxNEW—
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 — open disposable-address check
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Nexmo API vs Kickbox: common questions

Which is more reliable, Nexmo API or Kickbox?

Only Kickbox 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 Nexmo API and Kickbox need an API key?

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

Can I call Nexmo API and Kickbox from the browser?

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

Are Nexmo API and Kickbox free for commercial use?

Nexmo API has unclear commercial terms, and Kickbox 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.