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Check e-mail or username for a data breach vs Zippopotam.us

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

APICheck e-mail or username for a data breachHEALTHY98Zippopotam.usHEALTHY99
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms158158
P95 · ms817753
Authnonenone
CORSnoyes
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

Check e-mail or username for a data breach vs Zippopotam.us: common questions

Which is more reliable, Check e-mail or username for a data breach or Zippopotam.us?

Both are neck-and-neck — Check e-mail or username for a data breach and Zippopotam.us 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, Check e-mail or username for a data breach or Zippopotam.us?

They're evenly matched on speed — both Check e-mail or username for a data breach and Zippopotam.us post a 158 ms median (P50) in our checks. Look at the P95 row above if worst-case latency matters more than the typical response for your use case.

Do Check e-mail or username for a data breach and Zippopotam.us need an API key?

Neither needs a paid key — Check e-mail or username for a data breach is callable with no signup, and Zippopotam.us is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Check e-mail or username for a data breach and Zippopotam.us from the browser?

Only Zippopotam.us is browser-friendly — it returns CORS headers over HTTPS. Check e-mail or username for a data breach needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Check e-mail or username for a data breach and Zippopotam.us free for commercial use?

Check e-mail or username for a data breach has unclear commercial terms, and Zippopotam.us 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.