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Callook.info vs Currents

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

APICallook.infoHEALTHY94CurrentsHEALTHY93
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms437586
P95 · ms11561165
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified (data from public FCC ULS records)Unverified
Free tierFree — limits not publishedFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Callook.info vs Currents: common questions

Which is more reliable, Callook.info or Currents?

Both are neck-and-neck — Callook.info and Currents each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, Callook.info or Currents?

Callook.info has the lower median latency in our checks — Callook.info responds in 437 ms versus Currents at 586 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do Callook.info and Currents need an API key?

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

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

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

Are Callook.info and Currents free for commercial use?

Callook.info has unclear commercial terms, and Currents 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.