Free checks
Format and identifier checks you can run in the browser before you write a line of code. Free to try, no account and no key. Everything they read comes from the same registers and the same endpoints as the API.
Official register
DUNS Number Search
Check the format of a D-U-N-S number and see where a nine-digit number comes from.
Free, no account · checks the format
Open the toolLook Up a Company EIN
Check whether a nine-digit number is a well-formed EIN, and find out where to look for the company behind one.
Free, no account · checks the format
Open the toolLEI Search
Check the format of a 20-character LEI, including its ISO 17442 check digits.
Free, no account · checks the format
Open the toolNAICS Code Lookup
Look up a NAICS 2022 code or find the code for a business activity, with the official title and parent sector.
Unlimited · runs in your browser
Open the toolSIREN Number Lookup
Check a French SIREN number and see where the company behind it is confirmed.
Free, no account · checks the format
Open the toolTax ID Format Check (EIN, VAT, SIREN)
Check whether a tax ID or TIN is the right shape for its country, for the countries we already validate.
Free, no account · checks the format
Open the toolVAT Number Checker
Check an EU VAT number against the VAT register and get the registered business name and address back.
Free, no account · checks the register
Open the toolHow the free tools work
Each tool is free to try, with no account needed. Every answer comes from the same registers and the same endpoints the API serves. A key lets you call those endpoints from your own code, a spreadsheet or an AI agent.
Get an API key