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

NameChain IDDomain IDStatus

Ethereum Mainnet

1

6648936

Polygon

137

1886350457

Optimism

10

1869640809

Arbitrum One

42161

1634886255

Gnosis Chain

100

6778479

BNB Chain

56

6450786

Linea

59144

1818848877

Metis

1088

1835365481

Base

8453

1650553709

Feb 14

Testnet

NameChain IDDomain IDStatus

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

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