> For the complete documentation index, see [llms.txt](https://docs.ionos.com/cloud/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ionos.com/cloud/network-services/cdn/overview/limitations.md).

# Limitations

IONOS CLOUD CDN: known limitations including PoP coverage, distribution quotas, and routing rule maximums

The following are a few limitations to consider while using CDN:

* **Limited Points of Presence (PoPs):** CDN currently offers network edge servers focused on the European region and will soon extend the PoPs to other locations.
* **Restricted Customizations:** You can only turn the Caching and WAF settings on or off. The option to customize these in the routing rule is not available.
* **Distributions:** A maximum of twenty distributions can be created per contract. If the quota needs to be increased, contact [<mark style="color:blue;">IONOS CLOUD Support</mark>](https://docs.ionos.com/cloud/support/general-information/contact-information).
* **Routing Rules:** A maximum of 25 routing rules can be added for a distribution.
* **Certificate Authority Support:** CDN trusts and accepts SSL/TLS certificates issued by recognized and reputable Certificate Authorities (CAs) to ensure high security and reliability. Examples of commonly supported CAs include, but are not limited to:
  * **GeoTrust**
  * **Let's Encrypt intermediate certificates:**
    * R5
    * R6
    * R10
    * R11
    * R12
    * R13
    * R14
  * **GlobalSign**

{% hint style="info" %}
**Note:** Self-signed certificates are not accepted, as security policies require certificates to be issued by established and trusted authorities.
{% endhint %}


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://docs.ionos.com/cloud/network-services/cdn/overview/limitations.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.