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

# Accounting

> If you prefer to segregate requests for your customer invoicing or internal accounting, subaccounts can be provided.

| Key        | Value                                                                                                                                         | Examples                                     |
| ---------- | --------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------- |
| subaccount | Any unique identifier of up to 255 characters (regardless of character encoding); Massive will bill requests made from subaccounts separately | [user@mail.com](mailto:user@mail.com), user1 |

Example:

```bash theme={null}
curl -x https://network.joinmassive.com:65535 \
     -U '{PROXY_USERNAME}-subaccount-customer@example.com:{API_KEY}' \
     https://cloudflare.com/cdn-cgi/trace
```