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CountryStateCity vs IsItWater

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

APICountryStateCityDEAD0IsItWaterDEAD0
Uptime · 30d
Uptime · 90d0.0%0.0%
Uptime · 30d0.0%0.0%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

CountryStateCity vs IsItWater: common questions

Which is more reliable, CountryStateCity or IsItWater?

Both are neck-and-neck — CountryStateCity and IsItWater each measure 0.0% 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.

Do CountryStateCity and IsItWater need an API key?

Both ask you to authenticate — CountryStateCity uses an API key and IsItWater uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call CountryStateCity and IsItWater from the browser?

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

Are CountryStateCity and IsItWater free for commercial use?

CountryStateCity has unclear commercial terms, and IsItWater 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.