According to https://developers.cloudflare.com/web3/ethereum-gateway/reference/supported-networks/
The following url, https://cloudflare-eth.com/v1/goerli should be valid but I get a 404 response and and the following message.
Not Found: goerli is not supported on cloudflare-eth.com
What is a valid url to ethereum testnet?
The way I understand it, Goerli is only supported on your own gateways (ones that you created yourself in the Cloudflare dashboard), while the Ethereum Mainnet is also supported on Cloudflare’s public gateway.
Network Usage Ethereum Mainnet Append /v1/mainnetto calls to your gateway or the Cloudflare public gateway (cloudflare-eth.com).Goerli Testnet Append /v1/goerlito calls to your gateway.