The D-U-N-S Number is a unique nine-digit number that identifies business entities on a location-specific basis. Assigned and maintained by Dun & Bradstreet (D&B), the D-U-N-S Number is widely used as a standard business identifier.
Your D-U-N-S Number will be used to check the identity and legal entity status of your organization as part of our enrollment verification process for joining the Apple Developer Program or the Apple Developer Enterprise Program. While many types of businesses can receive a D-U-N-S Number, your business must be recognized as a legal entity (e.g., a corporation, limited partnership, limited liability company) to enter into the legal terms and obligations of Apple Developer Program agreements. DBAs, fictitious businesses, trade names, and branches are not accepted.
Companies and educational institutions must provide a D-U-N-S Number registered to their legal entity, while a D-U-N-S Number is optional for government organizations. If you are enrolling as an individual, you do not need a D-U-N-S Number.
You can request the duns number through the following link:
also, you can contact D&B for any inquiries using the following links