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Notion vs Numverify

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

APINotionREACHABLE100NumverifyHEALTHY93
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms524449
P95 · ms30961488
AuthoauthapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierOAuth — some read routes may be publicFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Notion vs Numverify: common questions

Which is more reliable, Notion or Numverify?

Both are neck-and-neck — Notion and Numverify 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, Notion or Numverify?

Numverify has the lower median latency in our checks — Notion responds in 524 ms versus Numverify at 449 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 Notion and Numverify need an API key?

Both ask you to authenticate — Notion uses OAuth and Numverify uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call Notion and Numverify from the browser?

Only Notion 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 Notion and Numverify free for commercial use?

Notion has unclear commercial terms, and Numverify 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.