What chains is Frax on?

Could you elaborate on the blockchain networks that Frax, the decentralized stablecoin protocol, currently operates on? I'm interested in understanding its cross-chain capabilities and how it interfaces with various ecosystems. As a cryptocurrency enthusiast, I'm always curious about how projects leverage different blockchains to enhance their functionality and reach a wider audience. Given Frax's focus on stability and scalability, it would be insightful to know which chains it utilizes to deliver its services.