A company database is only as trustworthy as the person who builds it. That is why you will find here who runs the website, where the Belgian data come from, how we count them and what we deliberately do not do.

Operator

basedecontacts.be is run by Martin Adamec as a sole trader, in business since . All prices exclude VAT. The full provider details are in the legal notice.

The data and the website are looked after by one person who has worked with public data sources for years. So emails are answered by the person who actually prepares the data. We would rather say openly what is missing from the data than promise completeness we cannot prove.

What we offer

  • Belgian company database: 779,149 records, 742,372 of them not marked as permanently closed and 696,077 with phone, email or website (as of 5 November 2026). One-off exports for 21 industries for CRM, direct mail, market analysis and territory planning, a whole industry from €239 excluding VAT, selections by province, municipality or your own filters on request. See the industries
  • EU and other markets: company data from the Netherlands, France, Luxembourg, Germany and other EU countries on request. More about other countries

How the data are created

This is how the Belgian company database is created:

  1. Basic data. Name, address, phone and website of the places come from Overture Maps Foundation, dataset Places, published under the Community Data License Agreement – Permissive 2.0. We leave out places that are not businesses: 2,604 places in geographical categories (rivers, lakes, mountains …) and 4,651 cash machines, charging points and parcel lockers.
  2. Details published by the businesses themselves. From the businesses’ own websites we add email addresses and phone numbers that they publish on their contact page, in their legal information or in the footer. On 5 November 2026, 265,237 of 338,056 domains had been processed; the collection is still running.
  3. Counting and cleaning. A record counts as having a contact if it has a phone number, a website or its own email address. An email address shared by three or more records (often the address of a web designer or a chain) does not count as the business’s own address. Active means: not marked as permanently closed in Overture Maps. Formats are standardised; duplicates between records are not yet merged.

We do not use the open data of the Crossroads Bank for Enterprises (KBO/BCE): they are only available after registration. Nor do we take over business directories. Details and limits are on the sources and methodology page, the current figures on the database status page.

What we do not do

  • We do not buy in old lists. The database is based on open data and company websites, not resold address lists of unclear origin.
  • We do not supply consumer data. The data are B2B only: businesses, self-employed people and institutions.
  • We do not sell email lists “for all businesses”. In Belgium, marketing email without consent may only go to impersonal addresses of legal entities, with an offer intended for legal entities (Royal Decree of 4 April 2003); the export therefore marks every address as general, personal or freemail. Phone numbers must be screened by the caller against the Do Not Call Me list.
  • We do not promise complete accuracy. Sources contain errors, contact details go out of date. We state the data status and coverage and correct reported errors.
  • We do not do your legal check for you. As the buyer, you are responsible for your own use; our guides on email and telemarketing are general information, not legal advice.

Questions?

Write to info@basedecontacts.be. The form is on the contact page, and more about the author of the articles on the Martin Adamec page.