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IP Geolocation API vs Lookup.im API

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

APIIP Geolocation APINEW—Lookup.im APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnono
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

IP Geolocation API vs Lookup.im API: common questions

Which is more reliable, IP Geolocation API or Lookup.im API?

On our scheduled checks, Lookup.im API leads on measured uptime — IP Geolocation API at —% versus Lookup.im API 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 IP Geolocation API and Lookup.im API need an API key?

IP Geolocation API needs no key, while Lookup.im API requires a free API key. If you want to start calling without signup, reach for IP Geolocation API first.

Can I call IP Geolocation API and Lookup.im API from the browser?

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

Are IP Geolocation API and Lookup.im API free for commercial use?

IP Geolocation API has unclear commercial terms, and Lookup.im API 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.