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Callook.info vs ModelPartFinder Error Codes

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

APICallook.infoNEW—ModelPartFinder Error CodesNEW—
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 — no key
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Callook.info vs ModelPartFinder Error Codes: common questions

Which is more reliable, Callook.info or ModelPartFinder Error Codes?

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

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

Can I call Callook.info and ModelPartFinder Error Codes from the browser?

Yes — both Callook.info and ModelPartFinder Error Codes 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 ModelPartFinder Error Codes free for commercial use?

Callook.info has unclear commercial terms, and ModelPartFinder Error Codes 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.