BusinessStandardNLOD

Nordic Smart Government Business Lookup (NSG)

Name: Nordic Smart Government Business Lookup (NSG)
License: NLOD

NSG is a Digdir/Altinn project under the Nordic Smart Government programme. Provides real-time company lookups in Norway (Brønnøysundregistrene), Sweden (Bolagsverket), Finland (PRH/YTJ) and Iceland (Fyrirtækjaskrá) via one shared API at data.altinn.no. Ideal for fast cross-Nordic validation without separate lookups in each national register. A free API key is required (registration at data.altinn.no). NLOD.

—

Data volume

Real time

Updates

MCP tools

Example response — /connectors/nsg/lookup

{
  "data": "..."
}

MCP integration

Available MCP tools

nsg.config.status

nsg.countries.list

nsg.lookup

nsg.lookup.by_country

Configuration for Claude Desktop / Cursor

{
  "mcpServers": {
    "nsg": {
      "url": "https://data.ketl.no/mcp/nsg",
      "headers": {
        "Authorization": "Bearer $KETL_API_KEY"
      }
    }
  }
}

Analysis apps that use this source

Ready-made tools built on Nordic Smart Government Business Lookup (NSG) data. Use them directly in the browser, or wire the same data into your own analysis via the API below.

NSG — Nordic Smart Government company search

A single real-time lookup covering the national company registers of Norway, Sweden, Finland and Iceland via the NSG API (Nordic Smart Government) — one query, four countries incl. Iceland. For direct register lookups that also cover Denmark, see Nordic company register.

API endpoints

GET

/lookup

Selskapsoppslag på NSG-ID (NO:xxx, SE:xxx, FI:xxx, IS:xxx)

Show curl example

# GET https://data.ketl.no/api/connectors/nsg/lookup
curl \
  -H "Accept: application/json" \
  "https://data.ketl.no/api/connectors/nsg/lookup"

Authenticated call — add one of these headers: x-api-key: ketl_… · Authorization: Bearer … — See the full reference in the documentation.

GET

/health

Status-sjekk

Show curl example

# GET https://data.ketl.no/api/connectors/nsg/health
curl \
  -H "Accept: application/json" \
  "https://data.ketl.no/api/connectors/nsg/health"

Authenticated call — add one of these headers: x-api-key: ketl_… · Authorization: Bearer … — See the full reference in the documentation.

Access and pricing

Nordic Smart Government Business Lookup (NSG) is openly available — create an account to get started.

norgesverigefinlandislandnordiskselskapregisteraltinn