REST Countries vs WhatIsMyIP API
Same instrument, two spec sheets — measured, not claimed.
REST Countries vs WhatIsMyIP API: common questions
Which is more reliable, REST Countries or WhatIsMyIP API?
Both are neck-and-neck — REST Countries and WhatIsMyIP 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, REST Countries or WhatIsMyIP API?
WhatIsMyIP API has the lower median latency in our checks — REST Countries responds in 274 ms versus WhatIsMyIP API at 194 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 WhatIsMyIP API need an API key?
Neither needs a paid key — REST Countries is callable with no signup, and WhatIsMyIP API is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call REST Countries and WhatIsMyIP API from the browser?
Yes — both REST Countries and WhatIsMyIP API 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 WhatIsMyIP API free for commercial use?
REST Countries allows commercial use on its free tier, and WhatIsMyIP 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.