ISO 3166-2 API vs Zippopotam.us
Same instrument, two spec sheets — measured, not claimed.
ISO 3166-2 API vs Zippopotam.us: common questions
Which is more reliable, ISO 3166-2 API or Zippopotam.us?
Both are neck-and-neck — ISO 3166-2 API and Zippopotam.us 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 3166-2 API or Zippopotam.us?
Zippopotam.us has the lower median latency in our checks — ISO 3166-2 API responds in 1056 ms versus Zippopotam.us at 219 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 3166-2 API and Zippopotam.us need an API key?
Neither needs a paid key — ISO 3166-2 API is callable with no signup, and Zippopotam.us is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call ISO 3166-2 API and Zippopotam.us from the browser?
Yes — both ISO 3166-2 API and Zippopotam.us send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.
Are ISO 3166-2 API and Zippopotam.us free for commercial use?
ISO 3166-2 API has unclear commercial terms, and Zippopotam.us 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.