Spain introduces the 400 prefix for sales calls from October 17. Find out what the new rules mean, how to identify calls and whether you can block them
Companies will have to use this prefix to attract new customers over the phone. Users will be able to claim if they receive commercial calls from numbers that do not include it.
Commercial calls aimed at attracting new customers will have to be made this Saturday from numbers starting at 400, so that the recipients can identify them, according to the Minister for Digital Transformation and the Public Service, Oscar López, announced.