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ipapi.co vs IsItWater

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

APIipapi.coNEW—IsItWaterNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — quota not published; returns 429 when exceededFree tier — API key required
Rate limitUnpublished (429 Quota exceeded)Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

ipapi.co vs IsItWater: common questions

Which is more reliable, ipapi.co or IsItWater?

On our scheduled checks, IsItWater leads on measured uptime — ipapi.co at —% versus IsItWater at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do ipapi.co and IsItWater need an API key?

ipapi.co needs no key, while IsItWater requires a free API key. If you want to start calling without signup, reach for ipapi.co first.

Can I call ipapi.co and IsItWater from the browser?

Neither sends browser-friendly CORS headers reliably, so call ipapi.co and IsItWater from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are ipapi.co and IsItWater free for commercial use?

ipapi.co 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.