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Authentication vs Domain Intelligence

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

APIAuthenticationNEW—Domain IntelligenceNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Authentication vs Domain Intelligence: common questions

Which is more reliable, Authentication or Domain Intelligence?

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

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

Can I call Authentication and Domain Intelligence from the browser?

Neither sends browser-friendly CORS headers reliably, so call Authentication and Domain Intelligence from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Authentication and Domain Intelligence free for commercial use?

Authentication has unclear commercial terms, and Domain Intelligence 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.