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CDNJS vs ip-api.com

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

APICDNJSNEW—ip-api.comNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesno
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree and open, no keyFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

CDNJS vs ip-api.com: common questions

Which is more reliable, CDNJS or ip-api.com?

On our scheduled checks, ip-api.com leads on measured uptime — CDNJS at —% versus ip-api.com 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 CDNJS and ip-api.com need an API key?

Neither needs a paid key — CDNJS is callable with no signup, and ip-api.com is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call CDNJS and ip-api.com from the browser?

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

Are CDNJS and ip-api.com free for commercial use?

CDNJS has unclear commercial terms, and ip-api.com 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.