Source: Schema.org v30.1 vocabulary. Official duns property definition.
What does duns mean?
The Dun & Bradstreet DUNS number for identifying an organization or business person.
Parent properties
Used on types (domainIncludes)
Expected value types (rangeIncludes)
Schema.org domainIncludes and rangeIncludes are descriptive guidance, not strict validation prohibitions. Check the official reference for updates.
Related reference
Browse all Schema.org types and properties · Google feature support status