Domain identifiers

Unique IDs for each Hyperlane-supported chain

Note that Hyperlane domain IDs have no relationship with 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.
Mainnet
Network
Domain Identifier (uint32)
Arbitrum
42161
Avalanche
43114
BSC
56
Celo
42220
Ethereum
1
Optimism
10
Polygon
137
Moonbeam
1284
Testnet
Network
Domain Identifier (uint32)
Alfajores
44787
BSC Testnet
97
Fuji
43113
Goerli
5
Mumbai
80001
Moonbase Alpha
1287
Optimism Goerli
420
Arbitrum Goerli
421613
​
​

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Last modified 1mo ago

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

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