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ELI vs NetworkCalc

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

APIELIHEALTHY92NetworkCalcHEALTHY91
Uptime · 30d
Uptime · 90d99.02%99.02%
Uptime · 30d98.3%98.3%
P50 · ms591448
P95 · ms18173976
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key may be required for productionFree public API, no key
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

ELI vs NetworkCalc: common questions

Which is more reliable, ELI or NetworkCalc?

Both are neck-and-neck — ELI and NetworkCalc each measure 99.02% 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 NetworkCalc?

NetworkCalc has the lower median latency in our checks — ELI responds in 591 ms versus NetworkCalc at 448 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 NetworkCalc need an API key?

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

Can I call ELI and NetworkCalc from the browser?

Yes — both ELI and NetworkCalc 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 NetworkCalc free for commercial use?

ELI has unclear commercial terms, and NetworkCalc 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.