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Domain Intelligence vs Microsoft Security Response Center (MSRC)

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

APIDomain IntelligenceHEALTHY82Microsoft Security Response Center (MSRC)HEALTHY92
Uptime · 30d
Uptime · 90d83.3%100%
Uptime · 30d75.0%100%
P50 · ms533538
P95 · ms44441107
AuthapiKeynone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree — no key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Domain Intelligence vs Microsoft Security Response Center (MSRC): common questions

Which is more reliable, Domain Intelligence or Microsoft Security Response Center (MSRC)?

On our scheduled checks, Microsoft Security Response Center (MSRC) leads on measured uptime — Domain Intelligence at 83.3% versus Microsoft Security Response Center (MSRC) 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, Domain Intelligence or Microsoft Security Response Center (MSRC)?

Domain Intelligence has the lower median latency in our checks — Domain Intelligence responds in 533 ms versus Microsoft Security Response Center (MSRC) at 538 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 Domain Intelligence and Microsoft Security Response Center (MSRC) need an API key?

Microsoft Security Response Center (MSRC) needs no key, while Domain Intelligence requires a free API key. If you want to start calling without signup, reach for Microsoft Security Response Center (MSRC) first.

Can I call Domain Intelligence and Microsoft Security Response Center (MSRC) from the browser?

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

Are Domain Intelligence and Microsoft Security Response Center (MSRC) free for commercial use?

Domain Intelligence has unclear commercial terms, and Microsoft Security Response Center (MSRC) 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.