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HackMyIP vs PostcodeData.nl

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

APIHackMyIPHEALTHY99PostcodeData.nlHEALTHY91
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms157692
P95 · ms21671989
Authnonenone
CORSyesyes
HTTPSyesno
Card requirednono
Commercial useyesunclear
Data licenseUnverifiedUnverified
Free tierCompletely free — no API key, no signupFree — limits not published
Rate limit100 req/windowUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

HackMyIP vs PostcodeData.nl: common questions

Which is more reliable, HackMyIP or PostcodeData.nl?

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

HackMyIP has the lower median latency in our checks — HackMyIP responds in 157 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 HackMyIP and PostcodeData.nl need an API key?

Neither needs a paid key — HackMyIP 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 HackMyIP and PostcodeData.nl from the browser?

Only HackMyIP is browser-friendly — it returns CORS headers over HTTPS. PostcodeData.nl needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are HackMyIP and PostcodeData.nl free for commercial use?

HackMyIP allows commercial use on its free tier, 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.