There are three general regions for men's volleyball: "West", "Midwest", and "East". Four "major conferences", defined here as leagues that include full members of Division I, represent these regions. The three "traditional" major conferences are the Mountain Pacific Sports Federation (MPSF), Midwestern Intercollegiate Volleyball Association (MIVA), and Eastern Intercollegiate Volleyball Association (EIVA). In the 2018 season, the ranks of "major" conferences expanded to include the Big West Conference, the first Division I all-sports conference ever to sponsor men's volleyball. As of the next NCAA men's volleyball season in 2021, two Division II conferences will sponsor men's volleyball at the National Collegiate level. Conference Carolinas (CC) was the first NCAA conference ever to sponsor men's volleyball as a scholarship sport, having launched its men's volleyball league in the 2012 season. The 2021 season will be the first for the Southern Intercollegiate Athletic Conference (SIAC), which will have six men's volleyball members. CC has had an automatic berth in the National Collegiate championship since the 2014 season, and the Big West received an automatic berth upon the creation of its men's volleyball league, while the SIAC will not be eligible for an automatic berth until the 2023 season (assuming that all six inaugural men's volleyball members continue to play in that conference). Members of the National Association of Intercollegiate Athletics (NAIA), a separate athletics governing body whose members are primarily smaller institutions, regularly play matches against NCAA teams.