Set Up MetaMask on Ethereum Layer2 Networks

2021-12-31

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.



Arbitrum Mainnet

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



Arbitrum Rinkeby (Testnet)

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



Avalanche Mainnet

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/



Avalanche FUJI (Testnet)

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/



BSC Mainnet

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



BSC Testnet

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



Fantom Mainnet

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



Fantom Testnet

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



Optimism Mainnet

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



Optimism Kovan (Testnet)

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/



Polygon Mainnet

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/



Polygon Mumbai (Testnet)

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/

xDai Mainnet

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