Lens and CoinBase announced free ENS domains for their users a few months back. Lens is based on the official offchain resolver contract. The same repository contains a gateway and CloudFlare workers but all of them are implemented in TypeScript (using a TypeScript library for CCIP-Read Server from ChainLink). There isn't any gateway implementation in Rust, nor a CCIP-Read Server library.
So far two things are available in this repository: https://github.com/jeje/ens-offchain-resolver-gateway-rs
Database interface is introduced with an implementation reading a static Json file.
You can see this gateway in action when requesting https://app.ens.domains/me.jerome-bernard.com on the Goerli network.
More details in a Twitter thread