Whether you’re looking to partner with a new company, apply for a grant, or register your organization with Apple, you might find yourself needing a DUNS number. But how can you check if your business already has one? And how do you find the DUNS number for another company?

This blog post will guide you through the process of looking up a DUNS number—for your own organization as well as for other businesses.

What Exactly is a DUNS Number?

In short, a DUNS number is a unique, 9-digit global business identifier issued by Dun & Bradstreet. It’s used to reliably identify businesses, particularly on an international scale.

How to Look Up a DUNS Number

1. Finding Your Own DUNS Number

If you want to find out if your organization already has a DUNS number, here’s how you can do it:

Via Dun & Bradstreet:

  • Look for an option like “Find your DUNS number” or use this direct link: https://www.dnb.com/duns-number/lookup.html – sometimes this can also be done for free.
  • Enter your company details, such as:
    • Company Name
    • City/Location
    • Country
  • You’ll be shown if a DUNS number already exists. If so, you can have it sent to your business email address.

Tip: Use the official company name as registered with your local business registry (e.g., Chamber of Commerce).

No Results?

If no DUNS number is found, you can usually apply for one directly on their site. This is typically free and takes a few business days.

2. Finding Another Company’s DUNS Number

Want to find the DUNS number for a supplier, client, or partner? You can also do this through Dun & Bradstreet:

  • Go to the international D&B Directory: https://www.dnb.com
  • Enter the company’s name and location details.
  • You should then see basic information, and potentially the DUNS number.

Please note: For some detailed information, you may need to create a (free) account or request a paid report.

3. Via Apple Developer (for Developers)

If you’re trying to create an Apple Developer account for an organization, Apple also provides a way to look up your DUNS number:

  • Go to the Apple Developer DUNS Lookup
  • Enter your company information.
  • Apple will let you know if a DUNS number exists or guide you through the application process.

Frequently Asked Questions (FAQ)

Is every company automatically registered with D&B?

Not always. Many larger or older companies are already listed, but smaller or newly established businesses may need to register manually.

Is looking up a DUNS number free?

Sometimes it is. D&B may charge a fee if you require detailed company reports (such as creditworthiness). However, using a tool like this one often allows us to find it for free.

In Summary

Finding a DUNS number isn’t complicated, but you need to know where to look. Whether you’re searching for your own number or another company’s, it’s straightforward with the right tools. If you don’t have one yet, don’t worry—applying is usually free and quick.