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Nationalize.io vs Sheet2API

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

APINationalize.ioHEALTHY95Sheet2APIHEALTHY79
Uptime · 30d
Uptime · 90d98.9%98.3%
Uptime · 30d100%98.3%
P50 · ms2092113
P95 · ms9854863
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierKeyless usage limited (x-rate-limit-limit: 25 observed); 2,500 names/mo with a free keyFree tier — API key required
Rate limitKeyless cap 25 per x-rate-limit-limit header; remaining/reset exposed in response headersUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Nationalize.io vs Sheet2API: common questions

Which is more reliable, Nationalize.io or Sheet2API?

On our scheduled checks, Nationalize.io leads on measured uptime — Nationalize.io at 98.9% versus Sheet2API at 98.3% 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, Nationalize.io or Sheet2API?

Nationalize.io has the lower median latency in our checks — Nationalize.io responds in 209 ms versus Sheet2API at 2113 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 Nationalize.io and Sheet2API need an API key?

Nationalize.io needs no key, while Sheet2API requires a free API key. If you want to start calling without signup, reach for Nationalize.io first.

Can I call Nationalize.io and Sheet2API from the browser?

Yes — both Nationalize.io and Sheet2API 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 Nationalize.io and Sheet2API free for commercial use?

Nationalize.io has unclear commercial terms, and Sheet2API 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.