Open-Elevation API vs Proweblook IP Checker

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

Uptime · 30d
Uptime · 90d92.2%100%
Uptime · 30d88.3%100%
P50 · ms73956
P95 · ms4287232
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

Open-Elevation API vs Proweblook IP Checker: common questions

Which is more reliable, Open-Elevation API or Proweblook IP Checker?

On our scheduled checks, Proweblook IP Checker leads on measured uptime — Open-Elevation API at 92.2% versus Proweblook IP Checker at 100% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, Open-Elevation API or Proweblook IP Checker?

Proweblook IP Checker has the lower median latency in our checks — Open-Elevation API responds in 739 ms versus Proweblook IP Checker at 56 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 Open-Elevation API and Proweblook IP Checker need an API key?

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

Can I call Open-Elevation API and Proweblook IP Checker from the browser?

Yes — both Open-Elevation 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 Open-Elevation API and Proweblook IP Checker free for commercial use?

Open-Elevation 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.