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ddownload vs Numverify

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

APIddownloadREACHABLE—NumverifyNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

ddownload vs Numverify: common questions

Which is more reliable, ddownload or Numverify?

On our scheduled checks, Numverify leads on measured uptime — ddownload at —% versus Numverify at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do ddownload and Numverify need an API key?

Both ask you to authenticate — ddownload uses an API key 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 ddownload and Numverify from the browser?

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

Are ddownload and Numverify free for commercial use?

ddownload 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.