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CCIP Chain Selectors Reference

Last Updated: 2026-01-31

CCIP uses numeric chain selectors for cross-chain routing. Set CCIP_DEST_CHAIN_SELECTOR when using run-send-cross-chain.sh.

Common Chain Selectors

Chain Selector (decimal)
Ethereum Mainnet 5009297550715157269
Arbitrum One 4949039107694359620
Polygon 4051577828743386545
Avalanche 6433500567565415381
Base 15971525489660198786
Optimism 3734403246176062136
BSC (BNB Chain) 11344663589394136015
Gnosis Chain 465200170687744372
Celo 1346049177634351622
Wemix 5142893604156789321

Source

Chain selectors are from Chainlink CCIP documentation. Verify current values at:

Usage

# Send to Ethereum mainnet (default)
./scripts/bridge/run-send-cross-chain.sh 0.01

# Send to Polygon
CCIP_DEST_CHAIN_SELECTOR=4051577828743386545 ./scripts/bridge/run-send-cross-chain.sh 0.01