API Reference - Ideal Postcodes vs Proweblook IP Checker

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

Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms15456
P95 · ms831232
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

API Reference - Ideal Postcodes vs Proweblook IP Checker: common questions

Which is more reliable, API Reference - Ideal Postcodes or Proweblook IP Checker?

Both are neck-and-neck — API Reference - Ideal Postcodes and Proweblook IP Checker 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, API Reference - Ideal Postcodes or Proweblook IP Checker?

Proweblook IP Checker has the lower median latency in our checks — API Reference - Ideal Postcodes responds in 154 ms versus Proweblook IP Checker at 56 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 API Reference - Ideal Postcodes and Proweblook IP Checker need an API key?

API Reference - Ideal Postcodes needs no key, while Proweblook IP Checker requires a free API key. If you want to start calling without signup, reach for API Reference - Ideal Postcodes first.

Can I call API Reference - Ideal Postcodes and Proweblook IP Checker from the browser?

Yes — both API Reference - Ideal Postcodes and Proweblook IP Checker 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 API Reference - Ideal Postcodes and Proweblook IP Checker free for commercial use?

API Reference - Ideal Postcodes has unclear commercial terms, and Proweblook IP Checker 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.