# Supported Chains & Contract Addresses

## Mainnets

<table><thead><tr><th width="172.12890625">Chain</th><th width="98.0703125">ID</th><th>GudEngine Address</th></tr></thead><tbody><tr><td>Ethereum Mainnet</td><td>1</td><td>0x0792C46723d479D4C29De5D78D93C0146EdF3f5B</td></tr><tr><td>Base</td><td>8453</td><td>0x0792C46723d479D4C29De5D78D93C0146EdF3f5B</td></tr><tr><td>Zircuit</td><td>48900</td><td>0x0792C46723d479D4C29De5D78D93C0146EdF3f5B</td></tr><tr><td>OP Mainnet</td><td>10</td><td>0x0792C46723d479D4C29De5D78D93C0146EdF3f5B</td></tr><tr><td>Arbitrum One</td><td>42161</td><td>0x0792C46723d479D4C29De5D78D93C0146EdF3f5B</td></tr></tbody></table>

## Testnets

<table><thead><tr><th width="171.63671875">Chain</th><th width="97.390625">ID</th><th>GudEngine Address</th></tr></thead><tbody><tr><td>Sepolia</td><td>11155111</td><td>0x7Fd9F1BBFF0f12822Dce087D4020310b06a01F70</td></tr><tr><td>Base Sepolia</td><td>84532</td><td>0x7Fd9F1BBFF0f12822Dce087D4020310b06a01F70</td></tr><tr><td>OP Sepolia</td><td>11155420</td><td>0x7Fd9F1BBFF0f12822Dce087D4020310b06a01F70</td></tr><tr><td>Arbitrum Sepolia</td><td>421614</td><td>0x7Fd9F1BBFF0f12822Dce087D4020310b06a01F70</td></tr></tbody></table>

> <mark style="color:blue;">**ⓘ Info**</mark>
>
> In Testnets the liquidity is limited, and the majority of the tokens will not be available. Slippage/fees can be high in some providers to avoid abuse. Consider using just native ETH as source and destination in small amounts for cross chain testing.