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Domain Intelligence vs Portscan

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

APIDomain IntelligenceNEW—PortscanNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Domain Intelligence vs Portscan: common questions

Which is more reliable, Domain Intelligence or Portscan?

On our scheduled checks, Portscan leads on measured uptime — Domain Intelligence at —% versus Portscan 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 Domain Intelligence and Portscan need an API key?

Portscan needs no key, while Domain Intelligence requires a free API key. If you want to start calling without signup, reach for Portscan first.

Can I call Domain Intelligence and Portscan from the browser?

Only Portscan is browser-friendly — it returns CORS headers over HTTPS. Domain Intelligence needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Domain Intelligence and Portscan free for commercial use?

Domain Intelligence has unclear commercial terms, and Portscan 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.