Arbitrum Block Explorer
Explore Arbitrum One, an Ethereum Layer 2, addresses and transactions.
Alltoscan explores Arbitrum One — a leading Ethereum Layer 2 — covering addresses, transactions, blocks, and tokens on chain ID 42161, where ETH pays for gas. Look up any wallet to review its balance and activity.
Because Arbitrum settles to Ethereum, Alltoscan’s multichain view lets you follow funds bridged between Arbitrum, Ethereum, and seven other chains.
What you can do with the Arbitrum explorer
- Look up any Arbitrum wallet address to see its ETH balance, token holdings, and transaction history.
- Inspect a transaction by hash to view its status, value, sender, recipient, and fees.
- Browse blocks on Arbitrum and the transactions they contain.
- Open a token page to review its details and holders.
- Track the same address across all nine chains Alltoscan supports, not just Arbitrum.
Arbitrum explorer FAQ
What is Arbitrum One's chain ID?
Arbitrum One uses chain ID 42161 and uses ETH as its gas token.
Is Arbitrum a Layer 2?
Yes. Arbitrum One is an optimistic rollup Layer 2 that settles transactions to Ethereum while offering lower fees.
Can I see token balances on Arbitrum?
Yes. Open an Arbitrum address on Alltoscan to view its ETH and token balances with transaction history.
Is exploration free?
Yes, searching Arbitrum data on Alltoscan is free and needs no sign-up.