brreg

SKILL.md

Norwegian Business Registry (Brreg)

Skill by ara.so — Daily 2026 Skills collection

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