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FreeIPAPI vs US ZipCode

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

APIFreeIPAPIDEAD0US ZipCodeDEAD0
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 US ZipCode: common questions

Which is more reliable, FreeIPAPI or US ZipCode?

Both are neck-and-neck — FreeIPAPI and US ZipCode 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 US ZipCode need an API key?

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

Can I call FreeIPAPI and US ZipCode from the browser?

Only US ZipCode 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 US ZipCode free for commercial use?

FreeIPAPI has unclear commercial terms, and US ZipCode 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.