Networks form the backbone of blockchain technology, enabling transactions and smart contracts across various blockchains. While MetaMask defaults to the Ethereum network, it supports custom networks like Binance Smart Chain (BSC), Polygon, and Avalanche. This guide walks you through adding a custom network to MetaMask.
Why Add Custom Networks?
Blockchains like Ethereum, BSC, and Polygon offer unique features:
- Ethereum: Smart contracts and dApp support.
- BSC: Lower fees and faster transactions.
- Polygon: Scalability for Ethereum-compatible projects.
👉 Explore popular networks to find the best fit for your needs.
Step-by-Step Guide
Step 1: Log Into MetaMask
- Open the MetaMask browser extension.
- Enter your password to unlock the wallet.
Step 2: Navigate to Network Settings
- Click the Account profile icon (top right).
- Select Settings > Networks.
Step 3: Add a Custom Network
- Click Add Network.
- Fill in the details (see table below).
| Network | New RPC URL | Chain ID | Symbol | Block Explorer URL |
|---------------|------------------------------------------|----------|--------|---------------------------|
| Polygon | https://polygon-rpc.com/ | 137 | MATIC | https://polygonscan.com/|
| BSC | https://bsc-dataseed.binance.org/ | 56 | BNB | https://bscscan.com |
| Avalanche | https://api.avax.network/ext/bc/C/rpc | 43114 | AVAX | https://snowtrace.io/ |
- Verify details and click Save.
👉 Need help? Troubleshoot here.
FAQs
1. Can I add multiple networks?
Yes! MetaMask supports unlimited custom networks.
2. What if I enter wrong details?
Transactions may fail. Double-check RPC URLs and Chain IDs.
3. Is adding custom networks safe?
Only use official RPC URLs to avoid phishing risks.
4. Why isn’t my balance showing?
Ensure you’re on the correct network and refresh the page.
5. How do I switch networks?
Click the network dropdown at the top of MetaMask.
6. Can I remove a network?
Yes. Go to Settings > Networks > Delete.
Conclusion
Adding custom networks expands MetaMask’s versatility for cross-chain transactions. Always verify network details before saving. Happy transacting!
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