How are the NBA referees assigned uniform numbers?

NBA referees are assigned uniform numbers based on a system that typically considers their years of experience and seniority within the officiating ranks. New referees are usually given lower numbers, while more experienced officials receive higher numbers as they advance in their careers. This numbering system helps distinguish referees during games and facilitates better communication among players, coaches, and officials. Additionally, some referees may retain their assigned numbers throughout their careers, even if they gain more experience.