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Numverify vs Passantenfrequenzen Zürich

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

APINumverifyHEALTHY93Passantenfrequenzen ZürichHEALTHY92
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms449569
P95 · ms14881228
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Numverify vs Passantenfrequenzen Zürich: common questions

Which is more reliable, Numverify or Passantenfrequenzen Zürich?

Both are neck-and-neck — Numverify and Passantenfrequenzen Zürich 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, Numverify or Passantenfrequenzen Zürich?

Numverify has the lower median latency in our checks — Numverify responds in 449 ms versus Passantenfrequenzen Zürich at 569 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 Numverify and Passantenfrequenzen Zürich need an API key?

Passantenfrequenzen Zürich needs no key, while Numverify requires a free API key. If you want to start calling without signup, reach for Passantenfrequenzen Zürich first.

Can I call Numverify and Passantenfrequenzen Zürich from the browser?

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

Are Numverify and Passantenfrequenzen Zürich free for commercial use?

Numverify has unclear commercial terms, and Passantenfrequenzen Zürich 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.