Set Up MetaMask on Ethereum Layer2 Networks
Tags: ethereum, metamask
Published: 2021-12-31 07:00:24

I couldn't find websites that comprehensively listed the major **Ethereum Layer 2** networks to set up in MetaMask, so I listed them up.  

*The value of **Network Name** is arbitrary.  

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## Arbitrum Mainnet

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| Network Name | Arb1 |
| New RPC URL | https://arb1.arbitrum.io/rpc |
| Chain ID | 42161 |
| Currency Symbol | ETH |
| Block Explorer URL | https://arbiscan.io |

Reference:
[https://coinguides.org/arbitrum-metamask-bridge/#arbitrum-metamask](https://coinguides.org/arbitrum-metamask-bridge/#arbitrum-metamask)

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## Arbitrum Rinkeby (Testnet)

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| Network Name | Arbitrum Rinkeby |
| New RPC URL | https://rinkeby.arbitrum.io/rpc |
| Chain ID | 421611 |
| Currency Symbol | ETH |
| Block Explorer URL | https://rinkeby-explorer.arbiscan.io |

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## Avalanche Mainnet

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| Network Name | Avalanche Mainnet C-Chain |
| New RPC URL | https://api.avax.network/ext/bc/C/rpc |
| Chain ID | 43114 |
| Currency Symbol | AVAX |
| Block Explorer URL | https://snowtrace.io/ |

Reference:
[https://docs.avax.network/build/tutorials/smart-contracts/deploy-a-smart-contract-on-avalanche-using-remix-and-metamask/](https://docs.avax.network/build/tutorials/smart-contracts/deploy-a-smart-contract-on-avalanche-using-remix-and-metamask/)

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## Avalanche FUJI (Testnet)

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| Network Name | Avalanche FUJI C-Chain |
| New RPC URL | https://api.avax-test.network/ext/bc/C/rpc |
| Chain ID | 43113 |
| Currency Symbol | AVAX |
| Block Explorer URL | https://testnet.snowtrace.io/ |

Reference:
[https://docs.avax.network/build/tutorials/smart-contracts/deploy-a-smart-contract-on-avalanche-using-remix-and-metamask/](https://docs.avax.network/build/tutorials/smart-contracts/deploy-a-smart-contract-on-avalanche-using-remix-and-metamask/)

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## BSC Mainnet

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| Network Name | BSC Mainnet |
| New RPC URL | https://bsc-dataseed.binance.org/ |
| Chain ID | 56 |
| Currency Symbol | BNB |
| Block Explorer URL | https://bscscan.com |

Reference:  
[https://docs.binance.org/smart-chain/wallet/metamask.html](https://docs.binance.org/smart-chain/wallet/metamask.html)

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## BSC Testnet

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| Network Name | BSC Testnet |
| New RPC URL | https://data-seed-prebsc-1-s1.binance.org:8545/ |
| Chain ID | 97 |
| Currency Symbol | BNB |
| Block Explorer URL | https://testnet.bscscan.com |

Reference:  
[https://docs.binance.org/smart-chain/wallet/metamask.html](https://docs.binance.org/smart-chain/wallet/metamask.html)

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## Fantom Mainnet

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| Network Name | Fantom Mainnet |
| New RPC URL | https://rpc.ftm.tools/ |
| Chain ID | 250 |
| Currency Symbol | FTM |
| Block Explorer URL | https://ftmscan.com/ |

Reference:  
[https://docs.fantom.foundation/tutorials/set-up-metamask](https://docs.fantom.foundation/tutorials/set-up-metamask)

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## Fantom Testnet

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| Network Name | Fantom Testnet |
| New RPC URL | https://rpc.testnet.fantom.network/ |
| Chain ID | 4002 |
| Currency Symbol | FTM |
| Block Explorer URL | https://testnet.ftmscan.com/ |

Reference:  
[https://docs.fantom.foundation/tutorials/set-up-metamask-testnet](https://docs.fantom.foundation/tutorials/set-up-metamask-testnet)

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## Optimism Mainnet

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| Network Name | Optimistic Ethereum |
| New RPC URL | https://mainnet.optimism.io/ |
| Chain ID | 10 |
| Currency Symbol | ETH |
| Block Explorer URL | https://optimistic.etherscan.io/ |

Reference:  
[https://metamask.zendesk.com/hc/en-us/articles/4403700785691-Using-Optimistic-Ethereum-with-MetaMask](https://metamask.zendesk.com/hc/en-us/articles/4403700785691-Using-Optimistic-Ethereum-with-MetaMask)

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## Optimism Kovan (Testnet)

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| Network Name | Optimistic Kovan |
| New RPC URL | https://kovan.optimism.io/ |
| Chain ID | 69 |
| Currency Symbol | ETH |
| Block Explorer URL | https://kovan-optimistic.etherscan.io/ |

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## Polygon Mainnet

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| Network Name | Polygon Mainnet |
| New RPC URL | https://polygon-rpc.com/ |
| Chain ID | 137 |
| Currency Symbol | MATIC |
| Block Explorer URL | https://polygonscan.com/ |

Reference:  
[https://docs.polygon.technology/docs/develop/metamask/config-polygon-on-metamask/](https://docs.polygon.technology/docs/develop/metamask/config-polygon-on-metamask/)

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## Polygon Mumbai (Testnet)

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| Network Name | Polygon Mumbai |
| New RPC URL | https://rpc-mumbai.maticvigil.com/ |
| Chain ID | 80001 |
| Currency Symbol | MATIC |
| Block Explorer URL | https://mumbai.polygonscan.com/ |

Reference:  
[https://docs.polygon.technology/docs/develop/metamask/config-polygon-on-metamask/](https://docs.polygon.technology/docs/develop/metamask/config-polygon-on-metamask/)

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## xDai Mainnet

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| Network Name | Gnosis Chain |
| New RPC URL | https://rpc.xdaichain.com/ |
| Chain ID | 100 |
| Currency Symbol | xDai |
| Block Explorer URL | https://blockscout.com/xdai/mainnet/ |

Reference:  
[https://www.xdaichain.com/for-users/wallets/metamask/metamask-setup](https://www.xdaichain.com/for-users/wallets/metamask/metamask-setup)