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Loket.nl API vs Proweblook IP Checker

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

APILoket.nl APINEW—Proweblook IP CheckerREACHABLE—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Loket.nl API vs Proweblook IP Checker: common questions

Which is more reliable, Loket.nl API or Proweblook IP Checker?

On our scheduled checks, Proweblook IP Checker leads on measured uptime — Loket.nl API at —% versus Proweblook IP Checker 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 Loket.nl API and Proweblook IP Checker need an API key?

Loket.nl API needs no key, while Proweblook IP Checker requires a free API key. If you want to start calling without signup, reach for Loket.nl API first.

Can I call Loket.nl API and Proweblook IP Checker from the browser?

Yes — both Loket.nl API and Proweblook IP Checker 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 Loket.nl API and Proweblook IP Checker free for commercial use?

Loket.nl API has unclear commercial terms, and Proweblook IP Checker 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.