# Public instances Otterscan is meant to be run in your own environment (see [install instructions](./install)). However, we host some testnet instances as a showcase of our features: - Sepolia testnet: - Holesky testnet: - Hoodi testnet: ## Third parties ### Test in Prod [Test in Prod](https://www.testinprod.io/), the makers of [OP-Erigon](https://github.com/testinprod-io/op-erigon/), also host instances for [Optimism L2](https://www.optimism.io/): - OP-Sepolia testnet: - OP-Mainnet: ### Ephemery [Ephemery](https://github.com/ephemery-testnet/ephemery-resources) has a public instance pointing to the latest iteration at .