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Check e-mail or username for a data breach vs US ZipCode

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

APICheck e-mail or username for a data breachNEW—US ZipCodeNEW—
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

Check e-mail or username for a data breach vs US ZipCode: common questions

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

On our scheduled checks, US ZipCode leads on measured uptime — Check e-mail or username for a data breach at —% versus US ZipCode 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 Check e-mail or username for a data breach and US ZipCode need an API key?

Check e-mail or username for a data breach needs no key, while US ZipCode requires a free API key. If you want to start calling without signup, reach for Check e-mail or username for a data breach first.

Can I call Check e-mail or username for a data breach and US ZipCode from the browser?

Only US ZipCode 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 US ZipCode free for commercial use?

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