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ipapi.com vs IPWhois

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

APIipapi.comHEALTHY96IPWhoisHEALTHY100
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms30123
P95 · ms1575598
AuthapiKeyapiKey
CORSnoyes
HTTPSyesno
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree tier — API key may be required for production
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

ipapi.com vs IPWhois: common questions

Which is more reliable, ipapi.com or IPWhois?

Both are neck-and-neck — ipapi.com and IPWhois 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, ipapi.com or IPWhois?

IPWhois has the lower median latency in our checks — ipapi.com responds in 301 ms versus IPWhois at 23 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 ipapi.com and IPWhois need an API key?

Both ask you to authenticate — ipapi.com uses an API key and IPWhois uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call ipapi.com and IPWhois from the browser?

Neither sends browser-friendly CORS headers reliably, so call ipapi.com 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 ipapi.com and IPWhois free for commercial use?

ipapi.com 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.