> For the complete documentation index, see [llms.txt](https://docs.plainproxies.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.plainproxies.com/resources/ip-whitelisting.md).

# IP Whitelisting

ISP support IP-based authentication, allowing you to connect to the proxy using authorized IP addresses instead of username and password.

#### **How to Enable IP Whitelisting**

To manage your IP whitelist, go to your proxy settings and click **Modify** under the **IP Whitelist** section.

From there, you can add or update the authorized IP address linked to your plan.

<figure><img src="https://434471995-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOUSKEeRnqRPsSptWoJei%2Fuploads%2FRtuCemyCZooRfqrtWNcq%2Fimage.png?alt=media&amp;token=a4b42aaa-c0fa-407f-8255-04f213e5b230" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
IP whitelist authentication is currently unavailable on the Per-GB Residential plan.  This feature is available on the Unlimited Residential plan.
{% endhint %}

**Default Limit**

By default, ISP plans include **1 whitelisted IP**.

This means you can authorize one IPv4 address to access your proxies without using credentials.

**Adding More IPs**

If you need more whitelisted IPs, you have the following option:

* Upgrade your plan to include up to 2 additional IPs

If you require more than the available upgrade options, please contact our team through the live chat to request a custom quote.