Subex Limited is an India-based company that provides operations and business support systems to communication service providers (CSPs) globally. The company's solutions include revenue assurance, fraud management, network asset management, capacity management, partner management, route optimization, and IoT security. Subex also offers analytics and assessment services to help CSPs enhance customer experience, minimize risk, manage margins, and gain business insights. Founded in 1992, the company was formerly known as Subex Azure Limited and changed its name in 2007. They are headquartered in Bengaluru, India.