RandomDuck vs RandomFox

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

Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms
P95 · ms
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

RandomDuck vs RandomFox: common questions

Which is more reliable, RandomDuck or RandomFox?

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

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

Can I call RandomDuck and RandomFox from the browser?

Only RandomFox 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 RandomDuck and RandomFox free for commercial use?

RandomDuck has unclear commercial terms, and RandomFox 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.