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Parkleitsystem API vs PostcodeData.nl

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

APIParkleitsystem APIHEALTHY86PostcodeData.nlHEALTHY91
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms1097692
P95 · ms45081989
Authnonenone
CORSnoyes
HTTPSyesno
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Parkleitsystem API vs PostcodeData.nl: common questions

Which is more reliable, Parkleitsystem API or PostcodeData.nl?

Both are neck-and-neck — Parkleitsystem API and PostcodeData.nl 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, Parkleitsystem API or PostcodeData.nl?

PostcodeData.nl has the lower median latency in our checks — Parkleitsystem API responds in 1097 ms versus PostcodeData.nl at 692 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 Parkleitsystem API and PostcodeData.nl need an API key?

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

Can I call Parkleitsystem API and PostcodeData.nl from the browser?

Neither sends browser-friendly CORS headers reliably, so call Parkleitsystem API and PostcodeData.nl from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Parkleitsystem API and PostcodeData.nl free for commercial use?

Parkleitsystem API has unclear commercial terms, and PostcodeData.nl 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.