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Arbitrum Mainnet

RPC Endpoints

Chain ID: 0xa4b1 · ETH

Other Arbitrum networks:Blueberry TestnetNovaSepolia
How to add Arbitrum to MetaMask or other wallets

Arbitrum Mainnet uses ETH as its native currency. Chain ID: 42161 (0xa4b1). Below are 7 public RPC endpoints you can use to connect wallets, dApps, and developer tools to Arbitrum Mainnet.

StatusRPC EndpointChain IDCurrencyExplorerWallet
Checking
https://arbitrum.drpc.org
0xa4b1ETHExplorer
Checking
https://arbitrum.blockpi.network/v1/rpc/public
0xa4b1ETHExplorer
Checking
https://rpc.ankr.com/arbitrum
0xa4b1ETHExplorer
Checking
https://arb1.arbitrum.io/rpc
0xa4b1ETHExplorer
Checking
https://arbitrum.api.onfinality.io/public
0xa4b1ETHExplorer
Checking
https://rpc.swiftnodes.io/rpc/arbitrum?key=demo
0xa4b1ETHExplorer
Checking
https://arbitrum-one-mainnet.gateway.tatum.io
0xa4b1ETHExplorer

Connect to Arbitrum Mainnet with ethers.js

import { ethers } from "ethers";

const provider = new ethers.JsonRpcProvider("https://arbitrum.drpc.org");

const network = await provider.getNetwork();
console.log(network.chainId); // 42161n

Arbitrum Mainnet — common questions

What is the RPC URL for Arbitrum Mainnet?
There are 7 public RPC endpoints for Arbitrum Mainnet, including https://arbitrum.drpc.org. See the full list in the table above.
What is the Chain ID for Arbitrum Mainnet?
The Chain ID for Arbitrum Mainnet is 42161 (0xa4b1 in hexadecimal).
What is the native currency of Arbitrum Mainnet?
The native currency of Arbitrum Mainnet is ETH.
How do I add Arbitrum Mainnet to MetaMask?
Use the "Add to Wallet" button on this page to add Arbitrum Mainnet to MetaMask automatically, or follow our step-by-step guide for Arbitrum.