One of the most common questions we get before someone even starts their DUNS application is: “What documents do I actually need to keep ready?” The honest answer is refreshingly simple for most standard applications: you don’t need to upload any documents at all. You need accurate information, not paperwork. D&B only asks for supporting documents in specific cases where your business can’t be automatically verified.
That said, having the right details ready and knowing which documents might get requested later makes the whole process faster and less stressful. We cover the general document question in more depth in our guide, What Documents Do You Need for a DUNS Number? This post breaks it down further by business type and situation.
What You Actually Need for a Standard Application
At the application stage itself, you’re filling in information, not uploading files. Have these details ready and accurate:
- Legal business name: exactly as it appears on your official registration
- Registered business address
- Business structure: sole proprietorship, partnership, LLP, private limited company, etc.
- Contact person’s name and phone number
- Nature of business/industry
- Tax identification number, where applicable
None of this requires a document upload upfront. It’s simply information you type directly into D&B’s online form.
When D&B Might Actually Ask for a Document
D&B occasionally follows up after submission if your details can’t be automatically confirmed against existing records. In that case, they may ask for one of the following, depending on your business type:
- Business registration certificate: such as your GST registration certificate, Certificate of Incorporation, or Udyam registration certificate
- Proof of business address: a utility bill, lease agreement, or similar document matching your registered address
- Identity proof of the authorized contact person, in some cases
This request comes directly from D&B by email, after you’ve already submitted your application, not as a mandatory upload during the form itself. If you weren’t asked, you don’t need to send anything.
Documents by Business Type
Different business structures tend to get asked for slightly different supporting documents if manual verification is needed. Here’s a general breakdown:
1. Sole proprietorships: Since sole proprietorships often have a thinner public paper trail than registered companies, they’re somewhat more likely to be asked for supporting proof, typically a GST certificate, Udyam/MSME registration, or a bank account statement in the business’s name.
We go into this in detail in our guide on DUNS number documents for sole proprietorships.
2. LLPs and private limited companies: These usually have stronger existing public records (through MCA filings), so verification is often automatic. If document proof is needed, a Certificate of Incorporation or LLP agreement is the most common request.
3. MSME/Udyam-registered businesses: If your business is registered under Udyam, that registration itself often strengthens your public record and can speed up automatic verification. It’s also commonly accepted as supporting proof if manual review is needed
See our guide on DUNS numbers for MSME/Udyam-registered businesses for more detail.
4. Export-import businesses: If your business has an Import Export Code (IEC), this can also serve as useful supporting documentation, since it reflects an existing government registration tied to your business name and address.
Our guide on DUNS numbers for export-import (IEC) businesses covers this in more detail.
What If You Don’t Have an EIN or Equivalent Tax ID?
This comes up a lot, especially for businesses outside the US. If you don’t have an EIN, for example, if you’re applying from India, this generally isn’t a blocker, since Indian businesses use PAN or GST details instead where a tax ID is requested. We’ve written a full explainer on this specific situation in our guide, DUNS Number Without an EIN, if you want to go deeper on this exact question.
How This Differs From Other Business Identifiers
It’s worth knowing that a DUNS number isn’t a replacement for your other business registrations it works alongside them. If you’re trying to understand how it relates to identifiers you may already have:
- See our comparison of DUNS number vs. GST number if you’re wondering whether your GST details are enough on their own
- See our comparison of DUNS number vs. CIN if you’re a registered company wondering how your Corporate Identification Number fits in
Understanding these differences can also clarify why D&B sometimes asks for documents tied to these other registrations; they’re used as supporting proof, not as substitutes for the DUNS number itself.
What If You Need a DUNS Number for a Specific Platform?
Some platforms have their own document expectations layered on top of the DUNS requirement itself. If you’re applying for a DUNS number specifically to complete a platform verification, it’s worth checking what that platform additionally requires:
A Simple Checklist Before You Apply
- Confirm your business registration (GST, MCA, Udyam, or equivalent) is fully finalized, not pending
- Write down your legal business name exactly as it appears on official documents
- Confirm your registered business address is current and matches your official filings
- Keep a digital copy of your registration certificate handy, in case D&B requests it later
- Use an email address you check regularly, since that’s how D&B will follow up if anything’s needed
Do I need to upload documents when applying for a DUNS number?
No, not at the application stage. Standard registration is form-based. D&B only requests documents afterward if manual verification is needed.
What's the most commonly requested document during DUNS verification?
A business registration certificate like a GST certificate, Certificate of Incorporation, or Udyam registration is the most common request.
Can I get a DUNS number without a formal business registration?
Sole proprietorships without formal registration can sometimes still apply, but having a GST or Udyam registration significantly speeds up verification and reduces the chance of a document request.
Do I need an EIN to apply for a DUNS number in India?
No, Indian applicants typically use PAN or GST details where a tax ID is requested, not an EIN.
What happens if I can't provide a document D&B asks for?
Contact D&B support directly to explain your situation; there are often alternative documents that can serve as valid proof depending on your business type.