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Callook.info vs Warnely

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

APICallook.infoNEW—WarnelyNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified (data from public FCC ULS records)Unverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublished100 req/window · 99 remaining · resets 60
In directory since2026-07-052026-07-05
operationalpartialdownno data

Callook.info vs Warnely: common questions

Which is more reliable, Callook.info or Warnely?

On our scheduled checks, Warnely leads on measured uptime — Callook.info at —% versus Warnely 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 Callook.info and Warnely need an API key?

Neither needs a paid key — Callook.info is callable with no signup, and Warnely is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Callook.info and Warnely from the browser?

Yes — both Callook.info and Warnely send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are Callook.info and Warnely free for commercial use?

Callook.info has unclear commercial terms, and Warnely 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.