Looking to check a supplier’s reliability, verify a partner’s legal status, or simply find a SIREN number? Several official websites provide access to company information within minutes, as long as you know which one to use and how to search.
Start with the right identifier to avoid irrelevant results
Entering a company’s trading name into a search engine often brings up a mix of official pages, private directories, and ads. Sorting through them takes time and can lead you to companies with similar names.
The most direct approach is to use the company’s SIREN or SIRET number. This unique identifier removes any ambiguity. You can find it on an invoice, a quote, or a Kbis extract you already have.
If you don’t have the number, searching for the exact registered company name (rather than its trading name or brand name) will already cut down on irrelevant results. On the Data INPI portal, entering the SIREN takes you straight to the entity’s record and legal information. Browsing the B2B Infos sitemap can also help you quickly identify the listed industry categories and narrow down a topic-based search.
How to check a company in a few steps using official portals
Not all websites answer the same questions. Before you search, ask yourself: are you looking to identify a company, view its financial data, or complete an administrative procedure?
Identify a company and view its registry information
The Data INPI portal centralizes data from the National Register of Companies. You can find the legal form, registered office address, business activity code (NAF/APE), declared directors, and any insolvency proceedings.
Searching by SIREN on Data INPI gives you a reliable result in a single step. The record displays information filed with the registry. No registration or payment is required for a basic search.
Complete or track a filing
The Single Window for Business Formalities (formalites.entreprises.gouv.fr) serves a different purpose. It is used to prepare and submit a filing for starting, changing, or ceasing a business activity. Mistaking this site for a company directory wastes time.
The distinction is simple:
- Data INPI lets you view existing information about a company that is already registered.
- The Single Window is used to file a business formality (incorporation, amendment, or dissolution) with the authorities.
- Net-entreprises is for social security filings (DSN, contributions), not for searching general information.
Choosing the right portal from the outset can save you several minutes of unnecessary browsing.
Navigate a business website efficiently
Finding the right portal isn’t always enough. Some platforms contain vast amounts of data spread across dozens of sections. You may have landed on an institutional homepage without spotting the relevant search field.
Use the built-in search function
Most official portals offer a built-in search engine accessible from the homepage. On Data INPI, the search field is visible at the top of the page. On the Single Window, the main menu points to the “Prepare” or “File” sections.
Using the built-in search instead of an external search engine limits results to pages on the website and excludes third-party directories that may reproduce outdated information.
Find your way around the site
When a website feels overwhelming, looking for its sitemap or “About” page gives you an overview of the available sections. This map helps you understand how information is organized: by type of formality, user profile, or legal topic.
On the Single Window, for example, preparatory information (required documents, steps, and contacts) is available without creating an account. You only need to create an account when you actually submit the filing.
Common pitfalls that slow down company searches
Several common habits needlessly increase the time it takes to find information. Knowing what they are can help you avoid them.
- Searching for a company by its trading name instead of its official registered name. The two may differ, and only the name filed with the registry guarantees an accurate result.
- Trusting a Google result without checking the source. A blocked Quora page snippet or an advertising tracker (such as those displayed by some directories) contains no useful information.
- Confusing a private directory with an official portal. Commercial websites sometimes offer partial or paid information, even though the data is available free of charge on Data INPI.
- Forgetting to check the update date. An outdated record may show a former director or an old address.
The most reliable approach is to cross-check at least two official sources before making a business or contractual decision based on the information you find.
Finding company information quickly depends less on how many websites you visit than on choosing the right portal and identifier from the outset. Entering a SIREN on Data INPI gives you in seconds what a name search can take several minutes to confirm.
