> ## Documentation Index
> Fetch the complete documentation index at: https://developers.fireblocks.com/llms.txt
> Use this file to discover all available pages before exploring further.

# IP Allowlisting

## Method 1: IP Allowlisting

IP allowlisting limits incoming webhook requests to Fireblocks-owned IP addresses. It provides an additional method of defense against unsolicited traffic, but should always be combined with cryptographic verification and not relied on as a standalone control.

### Webhook V2 IP Addresses

| Environment    | IP Address     |
| -------------- | -------------- |
| US Production  | 3.135.57.98    |
| EU Production  | 63.179.12.78   |
| EU2 Production | 3.77.138.100   |
| Sandbox        | 18.117.207.128 |

⚠️ Webhooks V2 uses different IPs than V1. Update your allowlists when migrating.