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Supported Chains

Domain IDs

Domain IDs are unique to every bridge and differ from Chain IDs. Connext's xcall requires specifying which Domain ID should be the destination of a cross-chain transaction.

Mainnet

Name
Chain ID
Domain ID
Status
Ethereum Mainnet
1
6648936
Polygon
137
1886350457
Optimism
10
1869640809
Arbitrum One
42161
1634886255
Gnosis Chain
100
6778479
BNB Chain
56
6450786

Testnet

Name
Chain ID
Domain ID
Status
Goerli
5
1735353714
Optimism-Goerli
420
1735356532
Mumbai
80001
9991
Arbitrum-Goerli
421613
1734439522
zkSync Era Testnet
280
2053862260
Linea Testnet
59140
1668247156
Polygon zkEVM Testnet
1442
1887071092