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ELI vs Nationalize.io

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

APIELIHEALTHY91Nationalize.ioHEALTHY95
Uptime · 30d
Uptime · 90d98.9%98.9%
Uptime · 30d98.3%100%
P50 · ms655209
P95 · ms1726985
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key may be required for productionKeyless 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

ELI vs Nationalize.io: common questions

Which is more reliable, ELI or Nationalize.io?

Both are neck-and-neck — ELI and Nationalize.io each measure 98.9% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, ELI or Nationalize.io?

Nationalize.io has the lower median latency in our checks — ELI responds in 655 ms versus Nationalize.io at 209 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 ELI and Nationalize.io need an API key?

Nationalize.io needs no key, while ELI requires a free API key. If you want to start calling without signup, reach for Nationalize.io first.

Can I call ELI and Nationalize.io from the browser?

Yes — both ELI and Nationalize.io send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are ELI and Nationalize.io free for commercial use?

ELI has unclear commercial terms, and Nationalize.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.