Subex Limited engages in the provision of operations and business support systems to communication service providers (CSPs) worldwide. It offers fraud management solutions that address fraud across various services, including bypass, handset, international revenue share fraud, robocalling, and SMS fraud solutions, as well as scam and spam calls. It also provides a signaling risk intelligence solution, which detects and prevents various protocol attacks at the signaling layer in real-time; business assurance, an active risk intelligence solution that assures revenues for business models comprising margin, asset and inventory, digital partner, enterprise 5G, IoT, digital profile, migration, and direct carrier billing assurance; and enterprise billing solution that include subscription management, billing and revenue management, configure, price and quote, service delivery platform, multi-level channel management, and customer relationship management services. In addition, the company offers partner ecosystem management that consists of partner and contract lifecycle management, digital services and roaming billing, and wholesale billing and routing services; and enterprise asset management solutions comprising network analytics, network asset management, and data integrity management. Further, it provides managed and business consulting services. Subex Limited was founded in 1992 and is based in Bengaluru, India.