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

# Regions

> Cludo API regions and base URLs for US and EU deployments, plus how to identify which region hosts your account so requests reach the right endpoint.

<Warning>
  Requests sent to the wrong region return `401 Unauthorized` because credentials are validated against the regional account store. Always match the base URL to your customer ID range.
</Warning>

<Info>
  Code examples throughout this documentation include EU and US tabs. Select your region to use the correct base URL.
</Info>

Cludo operates in two regions. Your region is determined by your **customer ID**:

| Customer ID          | Region | Base URL                    |
| -------------------- | ------ | --------------------------- |
| Below 10,000,000     | EU     | `https://api.cludo.com`     |
| 10,000,000 and above | US     | `https://api-us1.cludo.com` |

You can find your customer ID in [MyCludo](https://my.cludo.com) under **Account Settings**.