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In the world of business and technology, verification and credibility are everything. Whether you’re applying for a government grant, a corporate loan, or an Apple Developer account, you’ve probably come across the term “DUNS number.”
The DUNS number, created and managed by Dun & Bradstreet, acts as a unique global identifier for businesses. It helps establish trust, track credit, and verify legitimacy across systems worldwide.
If you’re an app publisher, startup, or organization looking to register your business formally — this guide covers everything you need to know about the DUNS number, its uses, and how to get one.
What is Dun & Bradstreet?
Dun & Bradstreet (D&B) is a global business data and analytics company headquartered in Florida, USA. Established over 180 years ago, it helps organizations assess risk, build business credit, and make informed financial decisions.
Its database includes more than 500 million business records worldwide, serving corporations, governments, and institutions. D&B provides commercial data, analytics, and risk intelligence, generating revenue through subscription services, business reports, and licensing.
What is a DUNS number?
DUNS stands for Data Universal Numbering System. It’s a unique nine-digit numeric identifier assigned to businesses by Dun & Bradstreet. Introduced in 1963, it’s now a global standard for identifying and tracking business entities.
Each DUNS number represents a single business location and is linked to that entity’s credit and financial profile. The number itself doesn’t encode any specific meaning — it simply serves as a unique identifier.
The DUNS database includes over 300 million businesses across 190+ countries. Global organizations like the European Commission, the United Nations, and Apple recognize or require it.
For example, companies creating an Apple developer account must provide a DUNS number to verify their legal business identity before they can publish apps on the App Store.
DUNS vs other business identifiers
A DUNS number connects to your D&B credit profile, which lenders, partners, and suppliers use to evaluate your reliability. It can help you qualify for better financing terms, vendor partnerships, and B2B opportunities.
The DUNS number is often confused with other identification systems used by governments and organizations. Here’s how they differ:
DUNS vs EIN
An EIN (Employer Identification Number) is issued by the U.S. Internal Revenue Service (IRS) to identify businesses for tax and employment purposes.
- Format: 12-3456789
- Use: Required for filing taxes and opening business bank accounts
- Difference: The EIN is for tax administration within the U.S., while DUNS is used for credit, trade, and global identification.
DUNS vs EORI
EORI (Economic Operators Registration and Identification Number) is used by businesses importing or exporting goods in the European Union.
- Format: Country code + number (for example: GB123456789000)
- Use: Customs registration and trade compliance
- Difference: EORI is specific to EU customs; DUNS is a global business identifier.
DUNS vs LEI
LEI (Legal Entity Identifier) is a 20-character alphanumeric code used for identifying entities involved in global financial transactions.
- Issued by: Local Operating Units accredited by GLEIF
- Use: Regulatory filings and transaction verification
- Difference: LEI focuses on financial transparency, while DUNS is broader and used for general business credit and identity.
DUNS vs UEI
UEI (Unique Entity Identifier) replaced DUNS in April 2022 as the U.S. federal government’s primary business ID system through SAM.gov.
- Format: 12-character alphanumeric code
- Use: Federal contracts, grants, and procurement
- Difference: UEI is specific to U.S. federal entities, while DUNS remains widely used globally.
In short: DUNS is the most universally recognized business identifier, while others are regional or purpose-specific.
Who needs a DUNS number?
While not mandatory for all businesses, many organizations benefit from having a DUNS number. It’s particularly valuable if you operate internationally, need financing, or wish to establish your business credibility.
Entities that commonly require DUNS numbers include:
- Businesses of all sizes — from startups to global corporations
- Suppliers and vendors working with large organizations
- Exporters and importers trading globally
- Tech companies applying for Apple Developer Program enrollment
- Financial institutions, banks, and credit unions
- Educational and research institutions seeking government grants
Additionally, some non-government loans and private funding programs may request your DUNS number during application.
What is a DUNS number used for?
A DUNS number is used for more than just identification — it’s part of your business credit DNA. Here’s how it helps:
1. Global business identification
DUNS numbers provide a globally recognized ID that distinguishes your company from others. They create consistency across international databases, supply chains, and credit systems.
2. Establishing credibility and trust
3. Securing loans, grants, and funding
Having a verified DUNS profile can simplify financial applications. Many grant and loan providers — especially in international trade and development — require it to confirm legitimacy and assess risk.
4. Simplifying compliance
In industries like tech, healthcare, and education, a DUNS number can help with regulatory filings, compliance requirements, and app store registrations.
In essence, a DUNS number gives your business an official, recognized identity within the global financial ecosystem.
How to get a DUNS number
Getting a DUNS number is a straightforward process. You can apply online through Dun & Bradstreet’s official website.
Requirements
Before applying, prepare these details:
- Legal name of your business
- Headquarters address and contact information
- DBA (Doing Business As) name, if applicable
- Type of business and structure
- Year of establishment
- Number of employees
- Key contact person
Step-by-step process
- Check for existing registration
Use D&B’s lookup tool to see if your business already has a DUNS number. Sometimes, a DUNS is created automatically when financial institutions or partners request information about your business. - Apply online
Visit the Dun & Bradstreet website and fill out the DUNS registration form with your business details. - Wait for confirmation
It typically takes up to 30 business days to receive your number. You can pay an expedited processing fee (around USD 300) to get it within eight business days. - Validate and update information
Once you receive your DUNS number, verify that your company details are accurate. Update your profile regularly to keep your credit history current. - Repeat for multiple locations
Each branch or physical location of your business needs a separate DUNS number.
A DUNS number is permanent — it doesn’t expire, even if your business relocates, rebrands, or changes ownership.
Why app developers and tech businesses need a DUNS number
If you’re an app publisher registering as an organization in Apple’s Developer Program, you’ll need a DUNS number. Apple uses it to verify your company’s legal identity and prevent fraudulent submissions.
Without it, you can only enroll as an individual, which limits your app publishing options and visibility. Having a DUNS number also simplifies contracts, partnerships, and financial compliance if your business expands globally.
For example, businesses using AppMySite to create iOS apps must have a valid DUNS number before submitting apps to the Apple App Store under a company name. It’s an essential step for professional, organization-level app publishing.
Conclusion
The DUNS number is more than a business identifier — it’s a passport to global credibility. It helps you access funding, partnerships, and digital opportunities that require verified legitimacy.
Whether you’re an app publisher enrolling with Apple, a supplier expanding internationally, or a small business building credit, having a DUNS number is a valuable step toward professional growth.
Apply for your DUNS number today and establish your business as a verified global entity. Once you’re ready to create your app, AppMySite can help you design, build, and publish it easily — no coding required.
