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ISO 3166 Updates API vs Smappee API

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

APIISO 3166 Updates APIHEALTHY78Smappee APIHEALTHY89
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms1402809
P95 · ms25261644
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limit500 req/windowUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

ISO 3166 Updates API vs Smappee API: common questions

Which is more reliable, ISO 3166 Updates API or Smappee API?

Both are neck-and-neck — ISO 3166 Updates API and Smappee API 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, ISO 3166 Updates API or Smappee API?

Smappee API has the lower median latency in our checks — ISO 3166 Updates API responds in 1402 ms versus Smappee API at 809 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 ISO 3166 Updates API and Smappee API need an API key?

ISO 3166 Updates API needs no key, while Smappee API requires a free API key. If you want to start calling without signup, reach for ISO 3166 Updates API first.

Can I call ISO 3166 Updates API and Smappee API from the browser?

Only ISO 3166 Updates API is browser-friendly — it returns CORS headers over HTTPS. Smappee API needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are ISO 3166 Updates API and Smappee API free for commercial use?

ISO 3166 Updates API has unclear commercial terms, and Smappee 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.