Domain identifiers

Unique IDs for each Hyperlane-supported chain

Note that Hyperlane domain IDs are not guaranteed to be the same as EVM chain IDs, as Hyperlane will eventually support non-EVM chains.

Hyperlane uses proprietary domain IDs to reference each Hyperlane-supported chain.

When sending a message, users must provide the domain ID of the destination chain. When receiving a message, the recipient will be passed the domain ID of the origin chain.

This list includes only the deployments on chains that are managed by Abacus Works (our legal entity). Anybody can deploy Hyperlane on any chain using Permissionless Interoperability and thus this list may not be exhaustive.

Mainnet

Network	Domain Identifier (uint32)
Arbitrum	42161
Avalanche	43114
BSC	56
Celo	42220
Ethereum	1
Optimism	10
Polygon	137
Moonbeam	1284
Gnosis	100

Testnet

Network	Domain Identifier (uint32)
Alfajores	44787
BSC Testnet	97
Fuji	43113
Goerli	5
Sepolia	11155111
Mumbai	80001
Moonbase Alpha	1287
Optimism Goerli	420
Arbitrum Goerli	421613