Founder and operator of firmdata.fr. Writes the articles on this website about company data, public registers and the rules for contacting businesses in France.
Who is behind firmdata.fr
firmdata.fr is run by Martin Adamec as a sole trader. Behind the content, the choice of data sources and the replies to requests is a specific person, not an agency. The full provider details are in the legal notice.
Legal form
Sole trader
In business since
24 July 2023
Prices
Prices shown are the full price – nothing is added.
The articles on firmdata.fr revolve around one question: how do you work with data about businesses in France in a way that is both lawful and practical? They describe where company data come from, what the Sirene database makes public, how NAF codes define a target group and which rules the CNIL sets for B2B prospecting by email and phone.
The principle: give figures with a date and source, label approximations as approximations, say openly what is not known, and do not round in our own favour. How we work is described on the data sources and methodology page, the current status on the database status page.
Articles
B2B prospecting in France: what email and phone outreach allows4 November 2026 – Email, phone, post: what the CNIL allows towards professionals, how generic addresses are treated, the end of Bloctel on 11 August 2026 and the duties under Articles 14 and 21 GDPR.
Buying French company data: ten things to check4 November 2026 – Ten checks before you order: sources and licences, data date, fill rates, shared addresses, intended use and price per record you can actually use.
