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InfraNode Open Data API vs Postcodes.io

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

APIInfraNode Open Data APIHEALTHY93Postcodes.ioHEALTHY100
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms26333
P95 · ms498328
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedService MIT-licensed; postcode data license unverified
Free tierFree — limits not publishedFree — no key required
Rate limit300 req/window · 299 remaining · resets 1783517525.6504178Unpublished (no key; fair use)
In directory since2026-07-052026-07-05
operationalpartialdownno data

InfraNode Open Data API vs Postcodes.io: common questions

Which is more reliable, InfraNode Open Data API or Postcodes.io?

Both are neck-and-neck — InfraNode Open Data API and Postcodes.io each measure 100% 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, InfraNode Open Data API or Postcodes.io?

Postcodes.io has the lower median latency in our checks — InfraNode Open Data API responds in 263 ms versus Postcodes.io at 33 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 InfraNode Open Data API and Postcodes.io need an API key?

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

Can I call InfraNode Open Data API and Postcodes.io from the browser?

Yes — both InfraNode Open Data API and Postcodes.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 InfraNode Open Data API and Postcodes.io free for commercial use?

InfraNode Open Data API has unclear commercial terms, and Postcodes.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.