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InternetDB API vs Nationalize.io

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

APIInternetDB APIHEALTHY99Nationalize.ioHEALTHY93
Uptime · 30d
Uptime · 90d100%97.1%
Uptime · 30d100%100%
P50 · ms133448
P95 · ms2260985
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedKeyless 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

InternetDB API vs Nationalize.io: common questions

Which is more reliable, InternetDB API or Nationalize.io?

On our scheduled checks, InternetDB API leads on measured uptime — InternetDB API at 100% versus Nationalize.io at 97.1% 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, InternetDB API or Nationalize.io?

InternetDB API has the lower median latency in our checks — InternetDB API responds in 133 ms versus Nationalize.io 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 InternetDB API and Nationalize.io need an API key?

Neither needs a paid key — InternetDB API is callable with no signup, and Nationalize.io is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call InternetDB API and Nationalize.io from the browser?

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

InternetDB API 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.