1. What is a D‑U‑N‑S number?
A D‑U‑N‑S number is a business identifier issued by Dun & Bradstreet. It can support vendor onboarding, business identity verification and certain commercial workflows. It is not a substitute for an LLC, tax ID or local business license.
2. Does it improve SEO?
There is no documented direct Google Search ranking boost from obtaining a D‑U‑N‑S number. Do not purchase one on the promise that it will raise rankings. Improve your website and verified local listings instead.
3. How to request or look up one
Use the official Dun & Bradstreet site at https://www.dnb.com/duns.html to look up an existing record and review the current request options. Prepare your legal business name, address, phone, ownership details and relevant registration information. Confirm eligibility and any fees directly with D&B; basic D‑U‑N‑S requests can be free in many circumstances.
4. Maintain consistent business identity
Ensure real-world business details match across your site, legitimate map profiles and relevant directories. Avoid creating duplicate business identities or publishing private home addresses without good reason.
5. What to do for SEO first
If you have one hour, audit indexing in Search Console, improve a useful page, and complete your eligible Business Profile. Treat D‑U‑N‑S as an administrative task when a partner or verification process asks for it.
Implementation checklist
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Official documentation: Google local ranking · Apple Business · Bing Places · Google structured data