Italian consumer association Altroconsumo, which actively campaigned against the companies' billing practices, said the fines were equal to 114 million euros for Telecom Italia, 60 million euros for Vodafone, 39 million euros for Wind Tre and the rest for Fastweb.

The antitrust decision could be appealed by the companies.

(Reporting by Elvira Pollina and Francesca Landini; editing by James Mackenzie)