The Data Universal Numbering System, abbreviated as DUNS or D-U-N-S, is a proprietary system developed and managed by Dun & Bradstreet that assigns a unique numeric identifier, referred to as a "DUNS number" to a single business entity. It was introduced in 1963 to support D&B's credit reporting practice. You can get it free for your US company here https://www.dnb.com/duns-number/get-a-duns.html For Net Terms application from the supplier, consider avoiding it and tell the supplier you'll pay b