Check a code now. Clean a file next.
Start with one postcode, process a spreadsheet without uploading it to our server, or explore the underlying country coverage.
Check one European postcode
See the format and current reference-data result. No account required.
Batch checker
Check up to 5,000 CSV or Excel rows and export the annotated results.
Open toolInteractive map
Search a postcode, city or address and open its geographic reference.
Open toolFormat directory
Compare postcode structures and examples across 52 countries and territories.
Open toolCoverage matrix
Check exact, partial and format-only availability before relying on the data.
Open toolDeveloper API
Move repeated checks into checkout, CRM, TMS or internal workflows.
Open toolOne lookup
Use the free quick check or map when you are reviewing a single address.
A working file
Use the browser-local checker for exports, customer lists and operational cleanup.
Repeated workflow
Use the API when postcode checks belong inside your own product or process.
Compare API plans