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FreeIPAPI vs IPWhois

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

APIFreeIPAPINEW—IPWhoisNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnoyes
HTTPSyesno
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key may be required for production
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

FreeIPAPI vs IPWhois: common questions

Which is more reliable, FreeIPAPI or IPWhois?

On our scheduled checks, IPWhois leads on measured uptime — FreeIPAPI at —% versus IPWhois 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 FreeIPAPI and IPWhois need an API key?

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

Can I call FreeIPAPI and IPWhois from the browser?

Neither sends browser-friendly CORS headers reliably, so call FreeIPAPI and IPWhois from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are FreeIPAPI and IPWhois free for commercial use?

FreeIPAPI has unclear commercial terms, and IPWhois 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.