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Visitor Statistics API vs Zipcodestack

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

APIVisitor Statistics APINEW—ZipcodestackNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Visitor Statistics API vs Zipcodestack: common questions

Which is more reliable, Visitor Statistics API or Zipcodestack?

On our scheduled checks, Zipcodestack leads on measured uptime — Visitor Statistics API at —% versus Zipcodestack 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 Visitor Statistics API and Zipcodestack need an API key?

Visitor Statistics API needs no key, while Zipcodestack requires a free API key. If you want to start calling without signup, reach for Visitor Statistics API first.

Can I call Visitor Statistics API and Zipcodestack from the browser?

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

Are Visitor Statistics API and Zipcodestack free for commercial use?

Visitor Statistics API has unclear commercial terms, and Zipcodestack 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.