Japan Neighborhoods vs ONS

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

Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms
P95 · ms
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Japan Neighborhoods vs ONS: common questions

Which is more reliable, Japan Neighborhoods or ONS?

On our scheduled checks, ONS leads on measured uptime — Japan Neighborhoods at —% versus ONS 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 Japan Neighborhoods and ONS need an API key?

Neither needs a paid key — Japan Neighborhoods is callable with no signup, and ONS is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Japan Neighborhoods and ONS from the browser?

Yes — both Japan Neighborhoods and ONS 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 Japan Neighborhoods and ONS free for commercial use?

Japan Neighborhoods has unclear commercial terms, and ONS 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.