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

# Protocols

> Dedicated Datacenter Proxy Support for HTTP, HTTPS, and SOCKS5 Formats

## HTTP

Here is a `cURL` example for the `HTTP` protocol:

<CodeGroup>
  ```shellscript cURL theme={null}
  curl -x "http://username:password@dc.decodo.com:10001" "https://ip.decodo.com/json"
  ```
</CodeGroup>

## HTTPS

Using this protocol will **encrypt** your connection. Here is a `cURL` example for the `HTTPS` protocol:

<CodeGroup>
  ```shellscript cURL theme={null}
  curl -x "https://username:password@dc.decodo.com:10001" "https://ip.decodo.com/json"
  ```
</CodeGroup>

## SOCKS5

Both `UDP` and `TCP` connections are supported via `SOCKS5` with the Dedicated ISP proxies.

Here is a `cURL` example for the `SOCKS5` protocol:

<CodeGroup>
  ```shellscript cURL theme={null}
  curl -x "socks5h://username:password@dc.decodo.com:10001" "https://ip.decodo.com/json"
  ```
</CodeGroup>

<Note>
  The letter `h` in `socks5h://` means that the hostname will be resolved on the proxy side, and not locally.
</Note>

***

## Ports

Easily understand which ports you can access when using our proxies, including details on the default accessible ports and restrictions.

### Accessible Ports

With the **Datacenter proxies**, only the following ports are accessible:

* `80`
* `443`
* `563`
* `8443`
* `43`

### Restricted Ports

Restricted ports include **`SMTP`**, **`IMAP`**, and other **mailing** and **messaging** related ports.

<Warning>
  Please note that currently, restricted ports and any others not mentioned in the Accessible Ports list cannot be unblocked for **Datacenter proxies**.
</Warning>

***

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