> For the complete documentation index, see [llms.txt](https://saggio.gitbook.io/multichain-wallet-connect/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://saggio.gitbook.io/multichain-wallet-connect/configurations/chainid-lookup.md).

# ChainID LookUp

[![npm version](https://img.shields.io/npm/v/multichain-wallet-connector)](https://www.npmjs.com/package/multichain-wallet-connector)[![License: GPL-3.0](https://img.shields.io/badge/License-GPLv3-blue.svg)](https://opensource.org/licenses/GPL-3.0)[![GitHub stars](https://img.shields.io/github/stars/Nworah-Gabriel/multichain-wallet-connector)](https://github.com/Nworah-Gabriel/multichain-wallet-connector/stargazers)

This document serves as a centralized source of information about supported Ethereum Virtual Machine (EVM)-compatible chains, spanning both **mainnets** and **testnets** for this library. EVM chains allow smart contracts written in Solidity or Vyper to be deployed and executed across diverse blockchain networks without modification. This unified structure has paved the way for seamless multi-chain dApp deployment, enabling developers to tap into the strengths and communities of various blockchains while reusing much of their codebase.

The table below lists supported chains, categorized by their unique `chainId` and `name`. This is essential for wallet and RPC configuration, bridging strategies, gas estimation, and network switching in front-end applications.

These configurations include:

* **`chainId`**: A unique identifier for each EVM-compatible blockchain, used in JSON-RPC calls and wallet providers.
* **`name`**: Human-readable network name.
* **(In code)** Additional metadata like native currency symbol, RPC endpoint, and block explorer are also configured but excluded here for simplicity because it is already configured in the library.

## 🔗 Table: EVM-Compatible Chain IDs and Network Names

### ✅ **Mainnets Supported:**

| Chain ID    | Name                                    |
| ----------- | --------------------------------------- |
| 1           | Ethereum                                |
| 56          | BNB Smart Chain                         |
| 137         | Polygon                                 |
| 42161       | Arbitrum                                |
| 10          | Optimism                                |
| 43114       | Avalanche                               |
| 250         | Fantom                                  |
| 324         | zkSync Era                              |
| 59144       | Linea Mainnet                           |
| 8453        | Base Mainnet                            |
| 534352      | Scroll Mainnet                          |
| 5000        | Mantle Mainnet                          |
| 40          | Telos EVM Mainnet                       |
| 1088        | Metis Andromeda                         |
| 288         | Boba Network                            |
| 8217        | Klaytn Mainnet Cypress                  |
| 66          | OKExChain Mainnet                       |
| 4689        | IoTeX Mainnet                           |
| 57          | Syscoin Mainnet                         |
| 199         | BitTorrent Chain Mainnet                |
| 11297108109 | Palm Mainnet                            |
| 122         | Fuse Mainnet                            |
| 361         | Theta Mainnet                           |
| 246         | Energy Web Chain                        |
| 106         | Velas EVM Mainnet                       |
| 30          | RSK Mainnet                             |
| 820         | Callisto Mainnet                        |
| 888         | Wanchain                                |
| 52          | CoinEx Smart Chain Mainnet              |
| 24          | KardiaChain Mainnet                     |
| 365         | Theta Testnet (misnamed under mainnets) |

### ✅ **Testnets Supported:**

| Chain ID    | Name                    |
| ----------- | ----------------------- |
| 97          | BSC Testnet             |
| 11155111    | Ethereum Sepolia        |
| 43113       | Avalanche Fuji C-Chain  |
| 4002        | Fantom Testnet          |
| 421614      | Arbitrum Sepolia        |
| 11155420    | Optimism Sepolia        |
| 84532       | Base Sepolia            |
| 300         | zkSync Era Testnet      |
| 59144       | Linea Sepolia Testnet   |
| 534351      | Scroll Sepolia Testnet  |
| 338         | Cronos Testnet          |
| 59902       | Metis Sepolia Testnet   |
| 331         | Telos zkEVM Testnet     |
| 11297108099 | Palm Testnet            |
| 44787       | Celo Alfajores          |
| 1287        | Moonbase Alpha          |
| 1313161555  | Aurora Testnet          |
| 1666700000  | Harmony Testnet Shard 0 |
| 2221        | Kava EVM Testnet        |

{% hint style="info" %}
💡 **Note:** The chain IDs listed above represent the networks currently supported by this library. If your desired network isn’t included, feel free to email me at **<gabrielnworah6@gmail.com>** with the network name.
{% endhint %}

<div data-full-width="false"><figure><img src="https://gitbookio.github.io/onboarding-template-images/quickstart-import.png" alt=""><figcaption></figcaption></figure></div>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://saggio.gitbook.io/multichain-wallet-connect/configurations/chainid-lookup.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.