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Check e-mail or username for a data breach vs Country.is

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

APICheck e-mail or username for a data breachUNMONITORED—Country.isNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree, no API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Check e-mail or username for a data breach vs Country.is: common questions

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

Only Country.is is on our probe schedule so far (—% uptime over 90 days). The other is catalogued but not yet live-checked, so we can't compare measured reliability head-to-head — check the uncovered API's own status page for now.

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

Neither needs a paid key — Check e-mail or username for a data breach is callable with no signup, and Country.is 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 Country.is from the browser?

Only Country.is 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 Country.is free for commercial use?

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