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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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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)