# Defense Federal Acquisition Regulation Supplement; Data Universal Numbering System Number
> **Defense Federal Acquisition Regulations System** · Final rule. · Published 1997-09-15 · Effective 1997-10-01 · 62 FR 48181
## Document
- **Document number:** 97-24385
- **Category:** dfars-acquisition
- **Sub-agency:** Defense Federal Acquisition Regulations System
- **Federal Register citation:** 62 FR 48181
- **CFR reference:** 48 CFR 204
- **Publication date:** 1997-09-15
- **Effective date:** 1997-10-01
- **DOD docket:** DFARS Case 97-D019
## Abstract

The Director of Defense Procurement has issued a final rule amending the Defense Federal Acquisition Regulation Supplement (DFARS) to revise guidance on the use of Data Universal Number System (DUNS) numbers for contractor identification.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1997/09/15/97-24385/defense-federal-acquisition-regulation-supplement-data-universal-numbering-system-number)
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