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Phone Number Validator vs TensorFeed

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

APIPhone Number ValidatorNEW—TensorFeedNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — no key (static JSON feed endpoints)
Rate limitUnpublished120 req/window · 119 remaining · resets 60
In directory since2026-07-052026-07-05
operationalpartialdownno data

Phone Number Validator vs TensorFeed: common questions

Which is more reliable, Phone Number Validator or TensorFeed?

On our scheduled checks, TensorFeed leads on measured uptime — Phone Number Validator at —% versus TensorFeed 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 Phone Number Validator and TensorFeed need an API key?

Neither needs a paid key — Phone Number Validator is callable with no signup, and TensorFeed is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Phone Number Validator and TensorFeed from the browser?

Yes — both Phone Number Validator and TensorFeed send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are Phone Number Validator and TensorFeed free for commercial use?

Phone Number Validator has unclear commercial terms, and TensorFeed 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.