Blog

Guides to company data and B2B outreach

Practical guides: free Polish registers, buying a company database, PKD 2025 codes, B2B outreach rules in Poland and the Czech Republic, Czech public registers.

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.

Read more →

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.

Read more →

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.

Read more →

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.

Read more →

ARES, Insolvency & Contract Register: Czech Public Data Explained

Four free Czech public databases tell you more about a business partner than many paid services – what each one contains and how to combine them.

Read more →

How to Find B2B Contacts for Czech Companies (Practical Guide)

A step-by-step guide to sourcing, filtering and verifying B2B contacts for the Czech market.

Read more →

GDPR and B2B Outreach: What Applies When Contacting Czech Companies

What sales and marketing teams need to know about contacting Czech companies lawfully – GDPR legitimate interest, Czech Act 480/2004 and the line between company data and personal data.

Read more →

How to Build a Targeted B2B Company List by Industry and Region

A targeted company list shortens your sales cycle and cuts acquisition costs – here is how to build one from scratch.

Read more →

VAT Payer Reliability in Czechia: What You Must Know

Buying from Czech suppliers? An invoice from an “unreliable VAT payer” can make you liable for their unpaid VAT – here is how to protect yourself.

Read more →