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RandomDog vs RandomDuck

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

APIRandomDogNEW—RandomDuckNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesno
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

RandomDog vs RandomDuck: common questions

Which is more reliable, RandomDog or RandomDuck?

On our scheduled checks, RandomDuck leads on measured uptime — RandomDog at —% versus RandomDuck 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 RandomDog and RandomDuck need an API key?

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

Can I call RandomDog and RandomDuck from the browser?

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

Are RandomDog and RandomDuck free for commercial use?

RandomDog has unclear commercial terms, and RandomDuck 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.