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JPL Close Approach vs Phone Number Validator

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

APIJPL Close ApproachHEALTHY88Phone Number ValidatorHEALTHY97
Uptime · 30d
Uptime · 90d98.0%100%
Uptime · 30d100%100%
P50 · ms676342
P95 · ms2992706
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

JPL Close Approach vs Phone Number Validator: common questions

Which is more reliable, JPL Close Approach or Phone Number Validator?

On our scheduled checks, Phone Number Validator leads on measured uptime — JPL Close Approach at 98.0% versus Phone Number Validator at 100% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, JPL Close Approach or Phone Number Validator?

Phone Number Validator has the lower median latency in our checks — JPL Close Approach responds in 676 ms versus Phone Number Validator at 342 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 JPL Close Approach and Phone Number Validator need an API key?

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

Can I call JPL Close Approach and Phone Number Validator from the browser?

Only Phone Number Validator is browser-friendly — it returns CORS headers over HTTPS. JPL Close Approach needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are JPL Close Approach and Phone Number Validator free for commercial use?

JPL Close Approach has unclear commercial terms, and Phone Number Validator 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.