# FAQ

We've collected answers to the questions our users ask most often. Choose a category below or use search.

{% hint style="info" %}
Didn't find the answer you need? Contact us: [Contact us](/contact-us.md)
{% endhint %}

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### Categories

* [**🔥 Popular product questions**](/questions-and-answers/faq/products.md) - short answers about p0f, UDP, static IPs, countries, pricing, and the API
* [**Residential proxies**](/questions-and-answers/faq/residential-proxies.md) - questions about using Residential proxies, session generation, and IP rotation
* [**Datacenter / ISP proxies**](/questions-and-answers/faq/datacenter-isp-proxies.md) - questions about static proxies, datacenters, and ISP
* [**Mobile proxies**](/questions-and-answers/faq/mobile-proxies.md) - questions about Mobile proxies

### General articles

* [How to check whether a proxy works](/questions-and-answers/faq/how-to-check-proxy.md)
* [Proxies are not working](/questions-and-answers/faq/proxy-not-working.md)
* [The proxy location is incorrect!](/questions-and-answers/faq/wrong-proxy-location.md)


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# Agent Instructions: Querying This Documentation

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

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.proxyshard.com/questions-and-answers/faq.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
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.