Infura is supporting the Goerli and Sepolia testnets and is deprecating Rinkeby, Ropsten, and Kovan testnets from the Infura API on October 5th, 2022. Users of Rinkeby, Ropsten, and Kovan testnets should migrate to Goerli. More instructions for developers can be found in our blog post "What you need to know to get ready for the Ethereum Merge: Infura Developers Edition".
Stats for your usage of these networks that occurred prior to October 5th, 2022 will continue to display in your Stats page on Infura until November 3rd, 2022. On November 4th, 2022 these Stats will no longer display for these networks.