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RestoSignals vs WhoisXML API IP Geolocation API

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

APIRestoSignalsREACHABLE100WhoisXML API IP Geolocation APIDEAD0
Uptime · 30d
Uptime · 90d100%0.0%
Uptime · 30d100%0.0%
P50 · ms748—
P95 · ms748—
AuthapiKeyapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified
Free tierFree tier — API key required
Rate limitUnpublished
In directory since2026-10-192026-07-05
operationalpartialdownno data

RestoSignals vs WhoisXML API IP Geolocation API: common questions

Which is more reliable, RestoSignals or WhoisXML API IP Geolocation API?

On our scheduled checks, RestoSignals leads on measured uptime — RestoSignals at 100% versus WhoisXML API IP Geolocation API at 0.0% 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 RestoSignals and WhoisXML API IP Geolocation API need an API key?

Both ask you to authenticate — RestoSignals uses an API key and WhoisXML API IP Geolocation API 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 RestoSignals and WhoisXML API IP Geolocation API from the browser?

Only WhoisXML API IP Geolocation API is browser-friendly — it returns CORS headers over HTTPS. RestoSignals needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are RestoSignals and WhoisXML API IP Geolocation API free for commercial use?

RestoSignals has unclear commercial terms, and WhoisXML API IP Geolocation API 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.