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MarketAux vs WhoisXML API IP Geolocation API

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

APIMarketAuxDEAD0WhoisXML API IP Geolocation APIDEAD0
Uptime · 30d
Uptime · 90d0.0%0.0%
Uptime · 30d0.0%0.0%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — token requiredFree tier — API key required
Rate limit100 requests/day on free planUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

MarketAux vs WhoisXML API IP Geolocation API: common questions

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

Both are neck-and-neck — MarketAux and WhoisXML API IP Geolocation API each measure 0.0% 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.

Do MarketAux and WhoisXML API IP Geolocation API need an API key?

Both ask you to authenticate — MarketAux 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 MarketAux and WhoisXML API IP Geolocation API from the browser?

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

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

MarketAux 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.