If you’re filling out an international application or a global buyer’s onboarding form and you’ve seen both “DUNS number” and “Company Registration Number” requested, it’s a fair question to ask whether one covers the other. It doesn’t. A Company Registration Number identifies your business to the government where it’s legally incorporated. A DUNS number identifies your business globally to Dun & Bradstreet’s independent verification database. They serve different authorities, for different purposes, and neither substitutes for the other.
What a Company Registration Number Actually Is
A Company Registration Number (sometimes called a CRN, CIN in India, or an equivalent depending on the country) is issued by the government body responsible for registering businesses in your country. In India, this is typically your CIN (Corporate Identification Number) for companies registered with the Ministry of Corporate Affairs, or an LLPIN for LLPs. This number confirms your business is legally incorporated and exists as a recognized entity under that country’s company law.
Its purpose is fundamentally legal and domestic: it’s how your government tracks and regulates your business’s existence, filings, and compliance obligations.
What a DUNS Number Actually Is
A DUNS number is issued by Dun & Bradstreet, a private, independent business data company not a government body. It exists to give platforms, suppliers, and institutions around the world a standardized way to verify that a business is real and legitimate, without each of them having to independently check government registries in every country a business operates in. It’s recognized internationally, across borders, in a way that a country-specific registration number generally isn’t.
Why Global Buyers and Platforms Ask for Both
This is where the confusion usually comes from. A global buyer, supplier, or platform onboarding process often asks for both identifiers because they’re checking two different things:
- Your Company Registration Number: confirms you’re a legally incorporated entity in your home country, satisfying their legal and compliance due diligence
- Your DUNS number: gives them a standardized way to check your business credibility and identity through a system they already trust and use consistently across every country they do business in, rather than learning to interpret dozens of different national registries
A large multinational buyer sourcing from India, Vietnam, and Brazil doesn’t want to learn how each country’s company registry works. A DUNS number gives them one consistent format to check against, regardless of where your business is incorporated.
Side-by-Side Comparison
| DUNS Number | Company Registration Number | |
| Issued by | Dun & Bradstreet (private company) | Government registrar (e.g., MCA in India) |
| Purpose | Global business identity verification | Legal proof of incorporation |
| Scope | International, consistent format everywhere | Country-specific, format varies by jurisdiction |
| Mandatory? | Only when a specific platform or partner requires it | Yes, required to legally operate as a registered entity |
| Cost | Free (standard registration) | Government filing fees, varies by country and entity type |
| Used for | Platform verification, B2B credit checks, global tenders | Legal compliance, tax filings, contracts under company law |
Can One Replace the Other?
No, in either direction. If a form specifically asks for your DUNS number, your Company Registration Number won’t be accepted in that field, since the entities recognizing it (Apple, Google, international suppliers, global tenders) are checking D&B’s database, not your country’s company registrar. Likewise, your DUNS number can’t be used in place of your CIN or equivalent for any legal filing, tax purpose, or government compliance requirement in your home country. They exist in entirely separate systems that don’t reference each other.
Does Your Company Registration Number Help Get a DUNS Number Faster?
Indirectly, yes. When D&B verifies a new DUNS application, they check the submitted details against available public records and in India, your CIN or LLPIN registration with the MCA is one of the data points that can help confirm your business automatically. Businesses with clean, consistent registration details across their Company Registration Number and their DUNS application tend to get verified faster, since D&B’s system has a clear public record to match against.
A Common Scenario: Why Would I Need Both?
Consider an Indian private limited company that wants to sell to a large US retailer, or list an app on Apple’s or Google’s platform as an organization. The company already has its CIN from company registration that’s not optional, and it’s required to legally exist as a private limited company in the first place. But the US retailer or global platform has no direct way to check India’s MCA registry, and even if they could, they’d need a different process for every other country they source from. That’s exactly the gap a DUNS number fills. It doesn’t replace the CIN, it adds a layer of international verification on top of it.
What Global Buyers Actually Check, in Practice
When a large international buyer or platform is evaluating whether to onboard your business, they typically want to see:
- Proof you’re a legitimate, legally registered entity: your Company Registration Number confirms this
- A verifiable, standardized business identity they can check independently: your DUNS number provides this
- Consistency between the two: your legal name and registration details should match across both systems, since a mismatch between what’s on your CIN and what’s on your DUNS record can raise questions during due diligence
How to Keep Both Consistent
Since both identifiers reference your business’s legal name and details, it’s worth making sure they align:
- Use your exact legal name: as registered with the MCA on your DUNS application, not a trade name or shortened version
- Keep your registered address consistent across both systems
- Update both if your business changes: a name change, structural conversion, or address update should ideally be reflected in your Company Registration records and your DUNS record around the same time, to avoid a mismatch surfacing later during a buyer’s verification
Is a DUNS number the same as a Company Registration Number?
No. A DUNS number is issued by Dun & Bradstreet for global business verification. A Company Registration Number is issued by your government for legal incorporation. They’re separate systems.
Do I need a DUNS number if I already have a CIN?
Only if something specific requires it: a global platform, an international buyer, or a cross-border tender. Your CIN alone covers your domestic legal compliance.
Can I use my Company Registration Number instead of a DUNS number on an international form?
No, if a form specifically asks for a DUNS number, your Company Registration Number won’t be accepted in that field, since they’re checked by entirely different systems.
Does having a Company Registration Number speed up my DUNS application?
Yes, indirectly. Consistent registration records give D&B more public data to verify your business against, which can speed up approval.
What happens if my DUNS record and Company Registration details don't match?
This can raise flags during a buyer’s or platform’s due diligence process. Keeping your legal name and address consistent across both systems avoids this.