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Lookup.im API vs Voidly

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

APILookup.im APIHEALTHY84VoidlyHEALTHY78
Uptime · 30d
Uptime · 90d99.02%100%
Uptime · 30d100%100%
P50 · ms11581238
P95 · ms35813894
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedCC BY 4.0
Free tierFree tier — API key requiredFree (keyless data endpoints; Hydra ML endpoints need a key)
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Lookup.im API vs Voidly: common questions

Which is more reliable, Lookup.im API or Voidly?

On our scheduled checks, Voidly leads on measured uptime — Lookup.im API at 99.02% versus Voidly at 100% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, Lookup.im API or Voidly?

Lookup.im API has the lower median latency in our checks — Lookup.im API responds in 1158 ms versus Voidly at 1238 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do Lookup.im API and Voidly need an API key?

Voidly needs no key, while Lookup.im API requires a free API key. If you want to start calling without signup, reach for Voidly first.

Can I call Lookup.im API and Voidly from the browser?

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

Are Lookup.im API and Voidly free for commercial use?

Lookup.im API has unclear commercial terms, and Voidly allows commercial use on its free tier. 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.