REST Countries vs Spaceflight News
Same instrument, two spec sheets — measured, not claimed.
REST Countries vs Spaceflight News: common questions
Which is more reliable, REST Countries or Spaceflight News?
On our scheduled checks, REST Countries leads on measured uptime — REST Countries at 100% versus Spaceflight News at 94.4% 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, REST Countries or Spaceflight News?
REST Countries has the lower median latency in our checks — REST Countries responds in 274 ms versus Spaceflight News at 505 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 REST Countries and Spaceflight News need an API key?
Neither needs a paid key — REST Countries is callable with no signup, and Spaceflight News is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call REST Countries and Spaceflight News from the browser?
Yes — both REST Countries and Spaceflight News 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 REST Countries and Spaceflight News free for commercial use?
REST Countries allows commercial use on its free tier, and Spaceflight News 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.