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ISO 3166 Updates API vs Visitor Statistics API

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

APIISO 3166 Updates APIHEALTHY78Visitor Statistics APIHEALTHY86
Uptime · 30d
Uptime · 90d100%98.0%
Uptime · 30d100%98.3%
P50 · ms1402847
P95 · ms25262159
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limit500 req/windowUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

ISO 3166 Updates API vs Visitor Statistics API: common questions

Which is more reliable, ISO 3166 Updates API or Visitor Statistics API?

On our scheduled checks, ISO 3166 Updates API leads on measured uptime — ISO 3166 Updates API at 100% versus Visitor Statistics API at 98.0% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, ISO 3166 Updates API or Visitor Statistics API?

Visitor Statistics API has the lower median latency in our checks — ISO 3166 Updates API responds in 1402 ms versus Visitor Statistics API at 847 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 Visitor Statistics API need an API key?

Neither needs a paid key — ISO 3166 Updates API is callable with no signup, and Visitor Statistics API is callable with no signup. Both are quick to prototype with; rate limits still apply.

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

Only ISO 3166 Updates API is browser-friendly — it returns CORS headers over HTTPS. Visitor Statistics 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 Visitor Statistics API free for commercial use?

ISO 3166 Updates API has unclear commercial terms, and Visitor Statistics 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.