Southwest Premier League Mens Open is comprised of the following regions:
Arizona Premier: NISA Nation & Div 1
Enchantment Premier - New Mexico and West Texas: In Development
Nevada Premier - Southern Nevada & Southern Utah: Div. 1 & Local partner - Libertad Soccer League
San Diego Premier: In Development
SoCal Premier: NISA Nation & Div 1, 2, 3
Pacific Premier: NISA Nation & Div 1
Mountain Premier
Each region plays a pivotal role in promoting clubs into and receiving clubs from NISA Nation.