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Guides to company data and B2B outreach

Practical guides: the free Polish registers CEIDG, KRS and REGON, buying a company database, PKD 2025 codes and B2B outreach rules in Poland (Article 398).

13 October 2026

B2B telemarketing and email in Poland after the change: Article 398

Since 10 November 2024, sales calls and emails in Poland require prior consent, businesses included. The wording of the law, the penalties and what is allowed without consent.

Free Polish company data: what CEIDG, KRS and REGON offer

The largest free company databases in Poland are run by the state. What you can get from CEIDG, KRS and REGON, through which API – and what is not there.

How to buy a company database: what to look out for

Ten questions to ask a data vendor before you pay: sources, data date, regional coverage, empty fields, consent and licence.

PKD 2025: Polish industry codes for company lists

Two classifications in one register: which sections changed letters, which codes changed meaning and how to filter companies until the end of 2026.