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What is a Business Number and where can i find it?

Learn more about the Business Number

When registering an account at OpusDNS, depending on your country, you may be required to provide a business number. Providing the correct business number ensures smooth verification and accurate billing for your OpusDNS account.

You can usually find your business number in your company registration documents, issued by your government or other relevant authorities.

Please Note: In many EU countries, the VAT ID functions as the official Business Number for B2B purposes. In other countries, a separate business number may exist that is independent of tax identification. Please check the specific circumstances for your country.

Examples by Region

European Union:

  • Germany: Handelsregisternummer (HRB), e.g., HRA 1234 or HRB 5678; VAT ID (Umsatzsteuer-Identifikationsnummer), e.g., DE123456789

  • France: SIREN/SIRET number, e.g., 123 456 789 / 123 456 789 00012

  • Italy: Partita IVA, e.g., IT12345678901

  • Spain: CIF/NIF, e.g., ESB12345678

  • Netherlands: KvK number, e.g., 12345678

  • Poland: NIP, e.g., PL123-456-78-90

  • Belgium: VAT number, e.g., BE0123.456.789

  • Austria: UID, e.g., ATU12345678

  • Sweden: VAT number, e.g., SE123456789001

United Kingdom & Switzerland:

  • United Kingdom: Company Registration Number (CRN) or VAT number, e.g., GB123456789

  • Switzerland: UID, e.g., CHE-123.456.789

Outside the EU:

  • United States: Employer Identification Number (EIN), e.g., 12-3456789

  • Canada: Business Number (BN), e.g., 12345 6789 RT0001

  • Australia: Australian Business Number (ABN), e.g., 12 345 678 901

  • New Zealand: New Zealand Business Number (NZBN), e.g., 9429034567890

  • Singapore: Unique Entity Number (UEN), e.g., 201234567X

  • Hong Kong: Business Registration Number (BRN), e.g., 12345678

  • Japan: Corporate Number (Houjin Bango), e.g., 1234567890123