The short answer: No, there is no expiration date for a DUNS number. After receiving your nine-digit number from Dun & Bradstreet, there is no expiration date or fee for renewal or no “re-verification” that requires you to do it on a schedule. But there are a couple of genuinely useful subtleties to know and understand in connection with the number that can change, and what does need changing, while the number itself doesn’t expire.
The Simple Answer, and Why It’s Not the Whole Story
A DUNS number is a permanent identifier, it is not a license or subscription. There is no expiry and D&B doesn’t suspend numbers after a while of inactivity or not use of them. Today, any DUNS number that is 5 years old or more is still active and remains in D&B’s database just as it was issued.
The confusion is not over the expiration of the number, but whether the information associated with the number remains accurate. A business name or address can be perfectly “valid” but there is no expiry date to cause problems, but only when it doesn’t match the business name on the DUNS number.
What Can Actually Change Your DUNS Number
Your DUNS number does not expire, but there are specific circumstances where your DUNS number can be changed, replaced or reassigned:
Mergers and acquisitions: Your business may be acquired by, or merged with, another legal entity and as a result the DUNS number associated with your business may no longer be valid depending on the structure of the transaction. The surviving entity will usually maintain its own DUNS number and/or D&B will update the records to show the new ownership.
Legal dissolution of the legal entity: If a business is officially dissolved, and the legal entity no longer exists, DUNS number will no longer be active, because there is no business behind it to identify.
Business structure change – for instance, from a sole proprietorship to a private limited company, while the business name may remain the same, a new legal entity is in existence. This may result in the old DUNS number no longer being valid for the legal entity, and a new DUNS number might be required for the new legal entity.
Those things that won’t affect your DUNS number: changes in your office, re-branding, changing your business name, or contact information. These need to be added to your existing record, not a new number.
Why “Doesn’t Expire” Doesn’t Mean “Never Needs Attention”
This is the part worth taking seriously. Since your DUNS number stays the same indefinitely, it’s easy to assume there’s nothing left to manage once you have it. But platforms and partners check the live details tied to your number every time they verify you, not just once when you first apply. If you’ve moved offices, changed your registered address, or gone through a name change and never updated your DUNS record, you can run into a rejected verification on a completely different platform months or years later, simply because the record is outdated.
We cover exactly how to fix an outdated address in our guide, How to Change Business Address on DUNS Number, and how to correct a mismatched name in DUNS Number Showing Wrong Company Name.
Does a DUNS Number Need Periodic Renewal Anywhere?
No not through D&B’s own system. However, it’s worth separating this from platform-specific behavior: some platforms that use your DUNS number for verification may periodically re-check your business details against D&B’s records as part of their own account maintenance, even though D&B itself isn’t asking you to renew anything. If your DUNS record is outdated when that re-check happens, it can look like a “renewal failure” on the platform’s end, even though it’s really just an outdated record catching up with you.
What About Inactive Businesses?
If your business becomes dormant but the legal entity technically still exists, not formally dissolved, your DUNS number typically remains on file as-is. It’s only formal dissolution or restructuring that meaningfully affects the number itself.
How to Check the Current Status of Your DUNS Number
If you’re unsure whether your existing DUNS number is still accurate, or want to confirm your details are current, use D&B’s official free lookup tool and compare what’s shown against your current business name, address, and structure. This is worth doing periodically, especially after any business change, rather than assuming everything is fine simply because the number “still works.”
If Your Business Has Undergone a Major Change
If your business has recently gone through a merger, acquisition, structural conversion, or dissolution, and you’re unsure whether your existing DUNS number still applies, it’s best to confirm directly with D&B rather than assuming. Continuing to use an outdated number tied to a legal entity that no longer exists in its original form can cause verification issues down the line.
Want Help Sorting Out Your DUNS Record? Connect With DUNS Assist
If you’re not sure whether your DUNS number is still accurate, or your business has changed in a way that might affect it, contact DUNS Assist. We help you and consult you through reviewing your current record and getting anything outdated corrected, so you’re not caught off guard during a future verification.
Does a DUNS number expire after a certain number of years?
No, there’s no expiry date. Once issued, it remains valid indefinitely as long as the original legal entity continues to exist.
Do I need to pay a renewal fee to keep my DUNS number active?
No, there’s no renewal fee. Standard DUNS numbers don’t require any ongoing payment to stay valid.
Can my DUNS number become invalid if I don't use it for years?
No, D&B doesn’t deactivate numbers due to inactivity. It remains valid whether you use it constantly or not at all.
Does changing my business's registered address cancel my DUNS number?
No, but it does make your DUNS record outdated, which can cause verification issues until you update it directly with D&B.
Will my DUNS number change if my company is acquired or merged?
It can, depending on how the transaction is structured. It’s best to confirm directly with D&B whether your existing number still applies after a merger or acquisition.