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Domain Intelligence vs National Vulnerability Database

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

APIDomain IntelligenceHEALTHY82National Vulnerability DatabaseDYING78
Uptime · 30d
Uptime · 90d83.3%86.3%
Uptime · 30d75.0%83.3%
P50 · ms533974
P95 · ms44444777
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedPublic domain (U.S. Government work)
Free tierFree tier — key may be requiredFree — no key required (free key raises limits)
Rate limitUnpublished5 requests per rolling 30 seconds without an API key (50 with a free key)
In directory since2026-07-052026-07-05
operationalpartialdownno data

Domain Intelligence vs National Vulnerability Database: common questions

Which is more reliable, Domain Intelligence or National Vulnerability Database?

On our scheduled checks, National Vulnerability Database leads on measured uptime — Domain Intelligence at 83.3% versus National Vulnerability Database at 86.3% 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 National Vulnerability Database?

Domain Intelligence has the lower median latency in our checks — Domain Intelligence responds in 533 ms versus National Vulnerability Database at 974 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 National Vulnerability Database need an API key?

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

Can I call Domain Intelligence and National Vulnerability Database from the browser?

Only National Vulnerability Database 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 National Vulnerability Database free for commercial use?

Domain Intelligence has unclear commercial terms, and National Vulnerability Database allows commercial use on its free tier. 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.