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

# Cloud Print Network Configuration

> Network requirements including domain names, IP ranges, and ports needed for Cloud Print to connect to its servers.

## Network configuration for Cloud Print

Your network must allow the Cloud Print client to reach its servers. This page covers the domain names, IP address ranges, and ports you need to allow.

## Required domain names

Your Cloud Print client needs to resolve the following addresses:

* `api.printnode.com`
* `app.printnode.com`
* `host2b.printnode.com`
* `client.printnode.com`
* `lon1.printnode.com`
* `central.printnode.com`
* `rdga3b.printnode.com`
* `byfa3b.printnode.com`

<Warning>While the IP address ranges for these domains are fixed, the specific IP address a domain points to can change at any time.</Warning>

## IP address ranges

The domains listed above can resolve to an IP address within any of these ranges:

| CIDR block         | Range                          |
| ------------------ | ------------------------------ |
| `5.10.27.32/28`    | 5.10.27.33 -- 5.10.27.46       |
| `5.10.23.32/27`    | 5.10.23.33 -- 5.10.23.62       |
| `94.228.44.128/28` | 94.228.44.129 -- 94.228.44.142 |

## Required ports

The Cloud Print client sends data outbound on ports **443** and **6123**. Ensure these ports are open for outbound connections.

## Testing your connection

To verify connectivity, open a web browser on the machine running Cloud Print and navigate to your portal.

<Warning>If the page does not load, there is a connection problem between your computer and the Cloud Print servers.</Warning>

## Troubleshooting connection issues

If the connection test fails, you can trace the network route:

* **Windows:** Open Command Prompt and run `tracert api.printnode.com`
* **macOS / Linux:** Open Terminal and run `traceroute api.printnode.com`

If your browser can reach the portal but the Cloud Print client still cannot connect, contact the support team.

<Accordion title="FAQ">
  **What are ports?**

  Ports are virtual endpoints for network connections. They help your computer route incoming and outgoing data to the correct program or service.

  **What is tracert / traceroute used for?**

  These commands trace the path data takes from your computer to a destination on the internet, helping you identify where a connection problem occurs.
</Accordion>