Norwegian Business Registry (Brreg)

Access the official open API from Brønnøysundregistrene to search and retrieve data about all registered companies in Norway.

When to Use

• When the user asks about Norwegian companies
• When searching for company information in Norway
• When looking up organization numbers (organisasjonsnummer)
• When finding companies by name, location, industry, or other criteria
• When checking company status (bankruptcy, dissolution, etc.)

API Base URL

https://data.brreg.no/enhetsregisteret/api

Key Endpoints

Search Companies (Enheter)

curl "https://data.brreg.no/enhetsregisteret/api/enheter?navn=SEARCH_TERM&size=20"

Common parameters: | Parameter | Description | |-----------|-------------| | navn | Company name (partial match) | | organisasjonsnummer | 9-digit org number (comma-separated for multiple) | | organisasjonsform | Organization type: AS, ENK, NUF, ANS, DA, etc. | | naeringskode | Industry code (NACE) | | kommunenummer | 4-digit municipality code | | postadresse.postnummer | Postal code | | forretningsadresse.postnummer | Business address postal code | | konkurs | true/false - bankruptcy status | | underAvvikling | true/false - dissolution status | | registrertIMvaregisteret | true/false - VAT registered | | fraAntallAnsatte | Minimum employees | | tilAntallAnsatte | Maximum employees | | fraRegistreringsdatoEnhetsregisteret | Registration date from (YYYY-MM-DD) | | tilRegistreringsdatoEnhetsregisteret | Registration date to (YYYY-MM-DD) | | size | Results per page (default: 20, max depth: 10000) | | page | Page number (0-indexed) |

Get Company by Org Number

curl "https://data.brreg.no/enhetsregisteret/api/enheter/123456789"

Search Sub-entities (Underenheter)

Branch offices and departments:

curl "https://data.brreg.no/enhetsregisteret/api/underenheter?overordnetEnhet=123456789"

Get Organization Forms

List all valid organization types:

curl "https://data.brreg.no/enhetsregisteret/api/organisasjonsformer"

Common organization forms: | Code | Description | |------|-------------| | AS | Aksjeselskap (Private limited company) | | ASA | Allmennaksjeselskap (Public limited company) | | ENK | Enkeltpersonforetak (Sole proprietorship) | | NUF | Norskregistrert utenlandsk foretak (Foreign enterprise) | | ANS | Ansvarlig selskap (General partnership) | | DA | Selskap med delt ansvar (Shared liability partnership) | | SA | Samvirkeforetak (Cooperative) | | STI | Stiftelse (Foundation) |

Get Recent Updates

Track new registrations and changes:

curl "https://data.brreg.no/enhetsregisteret/api/oppdateringer/enheter?dato=2024-01-01T00:00:00.000Z"

Bulk Downloads

Complete datasets (updated nightly ~05:00 AM):

Format	URL
JSON (gzipped)	https://data.brreg.no/enhetsregisteret/api/enheter/lastned
CSV	https://data.brreg.no/enhetsregisteret/api/enheter/lastned/csv
Excel	https://data.brreg.no/enhetsregisteret/api/enheter/lastned/regneark

Example Queries

Find all AS companies in Oslo with 50+ employees

curl "https://data.brreg.no/enhetsregisteret/api/enheter?organisasjonsform=AS&kommunenummer=0301&fraAntallAnsatte=50&size=100"

Search for tech companies

curl "https://data.brreg.no/enhetsregisteret/api/enheter?navn=tech&size=50"

Find companies registered this year

curl "https://data.brreg.no/enhetsregisteret/api/enheter?fraRegistreringsdatoEnhetsregisteret=2024-01-01&size=100"

Get all subsidiaries of a company

curl "https://data.brreg.no/enhetsregisteret/api/underenheter?overordnetEnhet=923609016"

Response Format

Responses are in HAL+JSON format with _embedded containing results and page containing pagination info:

{
  "_embedded": {
    "enheter": [
      {
        "organisasjonsnummer": "123456789",
        "navn": "Company Name AS",
        "organisasjonsform": {
          "kode": "AS",
          "beskrivelse": "Aksjeselskap"
        },
        "antallAnsatte": 50,
        "forretningsadresse": {
          "adresse": ["Street 1"],
          "postnummer": "0150",
          "poststed": "OSLO",
          "kommune": "OSLO",
          "kommunenummer": "0301"
        },
        "naeringskode1": {
          "kode": "62.010",
          "beskrivelse": "Programmeringstjenester"
        }
      }
    ]
  },
  "page": {
    "size": 20,
    "totalElements": 150,
    "totalPages": 8,
    "number": 0
  }
}

Notes

• API is free and open (NLOD license)
• No authentication required for public data
• Rate limiting may apply for heavy usage
• Results limited to 10,000 per query (use bulk downloads for complete data)
• Data updated continuously during business hours

Documentation

• Official API docs: https://data.brreg.no/enhetsregisteret/api/dokumentasjon/en/index.html
• OpenAPI spec: https://raw.githubusercontent.com/brreg/openAPI/master/specs/enhetsregisteret.json