# Luxembourg

Company data from the Luxembourg business register, through the Topograph API.

## Overview

Topograph reads LBR (Luxembourg Business Registers) and returns the company profile, legal representatives, other key persons and shareholders of Luxembourg companies through one API.

## Coverage

What comes back for each datapoint and document, as on the coverage matrix.

Requests run in prefill mode (fast) or verification mode (the authoritative register answer).

| Datapoint | Returned | Note |
| --- | --- | --- |
| Company profile | Yes |  |
| Legal representatives | Yes | Comes back in Verify. |
| Other key persons | Yes | Comes back in Verify. |
| Shareholders | Yes | Comes back in Verify. |

| Document | Returned |
| --- | --- |
| Register extract | Yes |
| Articles of association | No |
| Financials | Yes |
| UBO extract | No |

### Documents, as the register names them

- Extrait du RCS
- Comptes annuels (eCDF)

### Speed

A company profile typically comes back from the register in 2 s in prefill mode and 3 min in verification mode. These are typical observations, not a service-level commitment: set your timeouts well above them.

## Sources

The registers this country’s data comes from. Secondary sources only enrich or check what the registers return.

- **[LBR (Luxembourg Business Registers)](https://www.lbr.lu)**: Luxembourg Business Registers: the official Luxembourg trade and companies register (Registre de Commerce et des Sociétés).
- **[GLEIF (Legal Entity Identifiers)](https://www.gleif.org/en/lei-data/gleif-golden-copy/download-the-golden-copy)** (secondary): Global Legal Entity Identifier Foundation – Legal Entity Identifier reference data

## Identifiers

Request a company by its RCS number as the `id`, with `countryCode` set to `LU`. Its format, validation rules and an example value are in the full reference.

## The full Luxembourg reference

The full reference covers how each datapoint is sourced and mapped, the vocabularies the API returns, the documents you can order and exact example responses. It is free with a Topograph account.

| In the full reference | Entries |
| --- | --- |
| Identifiers and formats | 4 |
| Search patterns | 4 |
| Quirks | 11 |
| Legal forms | 28 |
| Officer roles | 122 |
| Company statuses | 7 |
| Documents | 4 |
| Example responses | 8 |

- Create a free account: https://www.topograph.co/sign-up?redirect_url=%2Fcountries%2Flu
- Sign in: https://www.topograph.co/sign-in?redirect_url=%2Fcountries%2Flu

With a session, https://www.topograph.co/countries/lu.md returns the full reference as Markdown. Assistants signed in to the [Topograph Wizard MCP](https://docs.topograph.co/guides/topograph-mcp) can read it there too.

## Luxembourg business register guide

[Luxembourg business register guide](https://www.topograph.co/guides/business-registers-in-luxembourg): how the register works, what it publishes and which documents it issues.

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Source: https://www.topograph.co/countries/lu