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Testnet Addresses
Supported Chains (Testnet)To send and receive messages, LayerZero endpoints use a chainId to identify different blockchains. Below is a table of the supported test networks along with their unique chainId.​Review carefully. LayerZero assigns proprietary IDs to each chain.

Official Endpoint Addresses (TESTNET)

Note: chainId values are not related to EVM IDs. Since LayerZero will span EVM & non-EVM chains the chainId are proprietary to our Endpoints.
These are the addresses of the contracts on which you would call send()
By the way, if you want to go straight to mainnet, look no further.
For a few more days prior to October 5th, these are the testnet chainIds bnb (testnet): 10002 fuji: 10006 mumbai: 10009 fantom (testnet): 10012 goerli: 10021 On OCTOBER 5th 2022, testnet will be undergo an update, and chainIds will change to the chainIds below:

BNB Chain (Testnet)

  • chainId: 10102
  • endpoint: 0x6Fcb97553D41516Cb228ac03FdC8B9a0a9df04A1

Fuji (Avalanche Testnet)

  • chainId: 10106
  • endpoint: 0x93f54D755A063cE7bB9e6Ac47Eccc8e33411d706

Mumbai (Polygon Testnet)

  • chainId: 10109
  • endpoint: 0xf69186dfBa60DdB133E91E9A4B5673624293d8F8

Fantom (Testnet)

  • chainId: 10112
  • endpoint: 0x7dcAD72640F835B0FA36EFD3D6d3ec902C7E5acf

Goerli (Ethereum Testnet)​

  • chainId: 10121
  • endpoint: 0xbfD2135BFfbb0B5378b56643c2Df8a87552Bfa23

Arbitrum-Goerli (Testnet)​

  • chainId: 10143
  • endpoint: 0x6aB5Ae6822647046626e83ee6dB8187151E1d5ab

Optimism-Goerli (Testnet)​

  • chainId: 10132
  • endpoint: 0xae92d5aD7583AD66E49A0c67BAd18F6ba52dDDc1

Harmony-Testnet​

  • chainId: 10133
  • endpoint: 0xae92d5aD7583AD66E49A0c67BAd18F6ba52dDDc1

Moonbeam-Testnet

  • chainId: 10126
  • endpoint: 0xb23b28012ee92E8dE39DEb57Af31722223034747

Celo-Testnet

  • chainId: 10125
  • endpoint: 0xae92d5aD7583AD66E49A0c67BAd18F6ba52dDDc1
The following testnets are no longer supported as of October 5th 2022:

Rinkeby (Ethereum Testnet)

  • chainId: 10101
  • endpoint: 0x79a63d6d8BBD5c6dfc774dA79bCcD948EAcb53FA

Arbitrum Rinkeby (Arbitrum Testnet)

  • chainId: 10110
  • endpoint: 0x4D747149A57923Beb89f22E6B7B97f7D8c087A00

Optimism Kovan (Optimism Testnet)

  • chainId: 10111
  • endpoint: 0x72aB53a133b27Fa428ca7Dc263080807AfEc91b5
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On this page
Official Endpoint Addresses (TESTNET)
BNB Chain (Testnet)
Fuji (Avalanche Testnet)
Mumbai (Polygon Testnet)
Fantom (Testnet)
Goerli (Ethereum Testnet)​
Arbitrum-Goerli (Testnet)​
Optimism-Goerli (Testnet)​
Harmony-Testnet​
Moonbeam-Testnet
Celo-Testnet
Rinkeby (Ethereum Testnet)
Arbitrum Rinkeby (Arbitrum Testnet)
Optimism Kovan (Optimism Testnet)