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DomainDb Info vs Genderize.io

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

APIDomainDb InfoNEW—Genderize.ioNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedKeyless usage limited (x-rate-limit-limit: 25 observed); 2,500 names/mo with a free key
Rate limitUnpublishedKeyless cap 25 per x-rate-limit-limit header; remaining/reset exposed in response headers
In directory since2026-07-052026-07-05
operationalpartialdownno data

DomainDb Info vs Genderize.io: common questions

Which is more reliable, DomainDb Info or Genderize.io?

On our scheduled checks, Genderize.io leads on measured uptime — DomainDb Info at —% versus Genderize.io 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 DomainDb Info and Genderize.io need an API key?

Neither needs a paid key — DomainDb Info is callable with no signup, and Genderize.io is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call DomainDb Info and Genderize.io from the browser?

Only Genderize.io is browser-friendly — it returns CORS headers over HTTPS. DomainDb Info needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are DomainDb Info and Genderize.io free for commercial use?

DomainDb Info has unclear commercial terms, and Genderize.io 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.