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DUNS Number vs D&B Rating: What's the Difference

Last updated: August 2026

These two get confused constantly because both live inside Dun & Bradstreet and both attach to your business. But one is a name tag, and the other is a report card. Here's exactly what separates your DUNS number from your D&B Rating — and how a code like "3A2" is actually built.

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The Core Difference, in One Line

Your DUNS number is a fixed identity — a 9-digit number assigned once, that never changes and carries no judgment about your finances. Your D&B Rating is a financial assessment — a code like "3A2" that combines your company's size with its overall creditworthiness, and that can move up or down as your business changes.

Put simply: the DUNS number says "this is who you are." The D&B Rating says "this is how strong you look financially, right now." One is permanent, the other is a snapshot.

If you're still working on getting your DUNS number in the first place, see our Getting Started guide before worrying about ratings.

Side-by-Side Comparison

Same company (Dun & Bradstreet), two entirely different jobs.

AttributeDUNS NumberD&B Rating
What it isUnique business identifierFinancial strength + credit appraisal code
Format9-digit numberAlphanumeric code, e.g. "3A2"
Does it change?No — fixed for lifeYes — can rise or fall
How you get itFree registration & verificationUsually requires submitting financials
Is it automatic?Yes, once verifiedNo, not by default
What it judgesNothing — pure identityCompany size & creditworthiness
Required by platforms (Apple, Google, etc.)?Often yesNot typically

Decoding a D&B Rating Code

Example rating: 3A2 — here's what each part represents.

3A2

"3A" — Financial Strength Indicator

Reflects your company's size, based on net worth or equity. Letter/number combinations range from the smallest tiers up through the largest (like "5A" for the biggest companies).

"2" — Composite Credit Appraisal

A 1–4 scale rating your overall creditworthiness, where 1 reflects the strongest appraisal and 4 the weakest, or limited, appraisal.

HOW THEY'RE ASSIGNED

How Each One Is Actually Assigned

The process behind getting a DUNS number and getting a D&B Rating couldn't be more different — one is a verification step, the other is a financial evaluation.

  • DUNS number: assigned after D&B verifies your business exists — legal name, address, and structure are confirmed, and a 9-digit number is issued, generally at no cost.
  • D&B Rating: calculated after your business voluntarily submits a financial statement (or D&B otherwise obtains enough financial data), from which the Financial Strength Indicator and Composite Credit Appraisal are derived.
  • A business can exist in D&B's system with a DUNS number for years and never have a Rating, simply because no financial data was ever submitted.
COMMON SITUATION

Why Many Businesses Have a DUNS Number But No Rating

If you registered for a DUNS number just to satisfy a platform requirement — an Apple Developer account, a Google Play listing, an export application — there was never a step that asked for your company's financials. That's exactly why a Rating never appeared.

  • Most DUNS-number use cases (app stores, marketplaces, government registrations) only check that the number exists and is valid — not what your D&B Rating is.
  • An unrated profile isn't a red flag; it simply reflects that no financial statement has been submitted yet.
  • This is different from being unscored on PAYDEX, which depends on vendor-reported payment activity rather than submitted financials — see our PAYDEX Score guide for that distinction.
ACTION STEPS

How to Get a D&B Rating If You Want One

  1. Decide if you actually need one. If nothing you're doing (loans, large vendor contracts, procurement bids) asks for a D&B Rating specifically, it may not be worth pursuing yet.
  2. Submit a financial statement to D&B. This is typically the trigger that allows D&B to calculate a Financial Strength Indicator based on your net worth or equity.
  3. Keep the submission current. Because the Rating reflects a snapshot, outdated financials can leave you rated on numbers that no longer represent your business.
  4. Pair it with a healthy PAYDEX score. Lenders and large partners often look at both together rather than either one in isolation — see our full Dun & Bradstreet Explained pillar guide for how all the pieces fit.
Key point: avoid third-party services that claim they can "get you rated fast" for a fee — Rating submissions go directly through D&B, not through resellers.

Frequently Asked Questions

Do I automatically get a D&B Rating when I register for a DUNS number?

No. A DUNS number is assigned automatically once your business is verified, but a D&B Rating typically requires you to submit financial information to D&B before one can be calculated.

What does a D&B Rating code like 3A2 actually mean?

The letter-number portion (like 3A) reflects the Financial Strength Indicator based on net worth or equity, while the final digit is the Composite Credit Appraisal, a 1-4 scale rating overall creditworthiness where 1 is the strongest.

Can my DUNS number change if my D&B Rating changes?

No. Your DUNS number is a fixed identifier that never changes regardless of how your D&B Rating moves up or down over time. The two are entirely independent.

Is a D&B Rating the same as a PAYDEX score?

No. PAYDEX measures only payment timeliness on a 1-100 scale. The D&B Rating is a broader assessment combining financial strength with overall creditworthiness, shown as a code rather than a single number.

Why does my business show no D&B Rating at all?

An unrated business usually hasn't submitted financial statements to Dun & Bradstreet, or hasn't provided enough verifiable financial data for D&B to calculate a Financial Strength Indicator and Composite Credit Appraisal.

Do I need a D&B Rating to use my DUNS number for platforms like Apple or Google?

No. Platforms such as Apple Developer or Google Play only require a valid DUNS number for business verification; they do not require or check your D&B Rating.

Continue Reading — Dun & Bradstreet Explained

PAYDEX SCORE What Is a PAYDEX Score and Why It Matters CREDIT REPORT D&B Credit Report Explained HISTORY History of Dun & Bradstreet D&B HOOVERS D&B Hoovers vs DUNS Number: What's the Difference

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