At the protest office you can check whether any protests have been made against natural persons or businesses through the national computerised register. Every month in this register all the Italian Chambers of Commerce publish the protests made in their relevant regions due to missing cheque payments, accepted bills and promissory notes, which have still not been cancelled or suspended in the meantime (e.g. due to restored debt).
The register can also be consulted online by using the Telemaco online service.