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FreeIPAPI vs Zipcodestack

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

APIFreeIPAPIDEAD0ZipcodestackDEAD0
Uptime · 30d
Uptime · 90d0.0%0.0%
Uptime · 30d0.0%0.0%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnoyes
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

FreeIPAPI vs Zipcodestack: common questions

Which is more reliable, FreeIPAPI or Zipcodestack?

Both are neck-and-neck — FreeIPAPI and Zipcodestack each measure 0.0% 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.

Do FreeIPAPI and Zipcodestack need an API key?

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

Can I call FreeIPAPI and Zipcodestack from the browser?

Only Zipcodestack is browser-friendly — it returns CORS headers over HTTPS. FreeIPAPI needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are FreeIPAPI and Zipcodestack free for commercial use?

FreeIPAPI has unclear commercial terms, and Zipcodestack 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.