 A total of 168 teams, divided on geographical grounds into six groups of 18 teams each and three groups of 20 teams each.The 2018–19 Serie D season was one of the most competitive and prestigious in the league's history, due to the presence of several teams with longstanding history in the professional leagues, which were refounded after going bankrupt in 2018.These teams include former Serie A clubs Bari, Modena, Cesena, Avellino and Reggio Audace (formerly known as Reggiana).