Is USDC its own Blockchain?

Could you please clarify for me, is USDC its own Blockchain? I've been hearing a lot about stablecoins recently and USDC seems to be quite popular. But I'm a bit confused about its technical underpinnings. Does USDC operate on its own dedicated blockchain, or does it rely on an existing blockchain platform like Ethereum? Understanding this distinction is crucial for me to grasp the full scope of USDC's functionality and potential within the crypto ecosystem. Thank you for your assistance in clarifying this matter.