IP2Location vs PostcodeData.nl
Same instrument, two spec sheets — measured, not claimed.
IP2Location vs PostcodeData.nl: common questions
Which is more reliable, IP2Location or PostcodeData.nl?
Both are neck-and-neck — IP2Location 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, IP2Location or PostcodeData.nl?
IP2Location has the lower median latency in our checks — IP2Location responds in 131 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 IP2Location and PostcodeData.nl need an API key?
PostcodeData.nl needs no key, while IP2Location requires a free API key. If you want to start calling without signup, reach for PostcodeData.nl first.
Can I call IP2Location and PostcodeData.nl from the browser?
Neither sends browser-friendly CORS headers reliably, so call IP2Location 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 IP2Location and PostcodeData.nl free for commercial use?
IP2Location 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.