As per https://www.dnb.com/duns-number.html, “The Dun & Bradstreet D‑U‑N‑S Number is a unique nine-digit identifier for businesses. This number is assigned once our patented identity resolution process, part of our DUNSRight methodology, identifies a company as being unique from any other in the Dun & Bradstreet Data Cloud. The D‑U‑N‑S Number is used as the starting point for any company’s Live Business Identity, the most comprehensive and continually updated view of any company in the Data Cloud.

You can look up a D-U-N-S Number directly via the Dun and Bradstreet website, https://www.dnb.com/duns-number/lookup.html

You can request your DUNS Number from the local Dun & Bradstreet Partner, TransUnion, please send and e-mail to dnb@transunion.co.za with proof of company registration and contact details. (Address, postal address and telephone number.)