> ## 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.

# Usage restrictions

> Some limitations apply to HTTP and SOCKS5 endpoints for ISP proxies.

## General Restrictions

* **No UDP Support:** UDP communication is restricted by default. [Contact support](support@joinmassive.com) if you require access.
* **Limited Ports:** Only standard ports (80, 443) are available.
  * Allowed: `http://example.com/`, `https://example.com/`
  * Not Allowed: `http://example.com:8080`
* **Content Policy:** The ISP proxy network is designed for activities falling within the legal framework of all jurisdictions. Requests targeting high-risk, offensive, harmful, or illegal content may be blocked.

Requests blocked due to protocol, port, or content restrictions return a `452 Disallowed Content` error.

## Restricted Domains

We restrict access to content that is generally used to evade the law or site TOS policies. If you are getting blocked from accessing certain content that you have a legitimate reason to access, then [contact support](https://joinmassive.atlassian.net/servicedesk/customer/portal/2/group/2/create/13) to complete our KYC process to gain access.

## Port 25

`Port 25` is not opened on our ISP proxy network. Submit a request if this feature is necessary.

## Request access

[Contact support](https://joinmassive.atlassian.net/servicedesk/customer/portal/2/group/2/create/13) if you have questions about our policies or want to complete KYC to gain access to content that is restricted by default.