Table of Contents for Ethereum testnets guide

There are a few testnets on Ethereum.

Last updated Aug 2022. Use any links in here at your own risk. They seemed fine when i was using them but always be careful with these sorts of sites.

Sepolia testnet

• proof of work
• expected to under go ‘the merge’ in Sept 2022
• link: https://sepolia.dev/
• Network/Chain ID: 11155111
• blockchain explorer for Sepolia https://sepolia.otterscan.io/ or https://sepolia.etherscan.io/
• Faucet for Sepolia: https://faucet.sepolia.dev/ or https://fauceth.komputing.org/

Goerli testnet

• proof of authority
• Goerli chain id: 5
• link: https://goerli.net/
• Goerli blockchain explorer: https://goerli.etherscan.io/
• Goerli faucet links: https://goerli-faucet.mudit.blog/ or https://faucets.chain.link/ (see my full list of faucet links)

Ropsten testnet

• is deprecated, recommended to use either Goerli or Sepolia
• Proof of work testnet
• chain id: 3
• Ropsten faucet: https://fauceth.komputing.org/ or https://faucet.paradigm.xyz/

Rinkeby testnet

• another deprecated one
• Proof of authority
• Rinkeby faucet: https://faucet.rinkeby.io/

List of chain ids for Ethereum / Ethereum testnets

• 1 Mainnet
• 2 Morden Testnet (deprecated)
• 3 Ropsten Testnet (deprecated)
• 4 Rinkeby Testnet (deprecated)
• 5 Goerli Testnet
• 42 Kovan Testnet (deprecated)
• 11155111 Sepolia Testnet

For more chain IDs check out chainlist.org

Spotted a typo or have a suggestion to make this crypto dev article better? Please let me know!