> ## Documentation Index
> Fetch the complete documentation index at: https://docs.2extract.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Advanced Parameters

> Discover advanced parameters for fine-tuning your proxy requests, including DNS resolution control.

While our standard geo-targeting and session control parameters cover most use cases, we offer a set of advanced parameters for users who need maximum control over their requests.

These parameters are appended to your proxy's **username** just like the others.

***

## DNS Resolution (`-dns`) (Coming Soon)

This parameter controls **where** the Domain Name System (DNS) lookup for your target website is performed. By default, it's done on the final exit node for maximum anonymity.

### Parameter Options

* **`-dns-remote` (Default)**
  * **Behavior:** The DNS request to resolve the target's IP address (e.g., `google.com` -> `142.250.180.78`) is made from the **final residential/mobile IP**.
  * **Pros:** Highest level of anonymity. The target website sees both the connection and the DNS lookup coming from the same residential IP.
  * **Cons:** Can be slightly slower in some cases.
  * **Example Username:** `...-my_scraper-country-us-dns-remote`

* **`-dns-local`**
  * **Behavior:** The DNS request is performed by our central **proxy gateway servers**. The connection to the target is then made from the final residential IP.
  * **Pros:** Can sometimes be faster as our gateway servers use highly optimized DNS resolvers.
  * **Cons:** Less anonymous. An advanced target could theoretically see a DNS lookup from a datacenter IP and a connection from a residential IP, which might be a red flag.
  * **Example Username:** `...-my_scraper-country-us-dns-local`

<Info>
  <strong>Recommendation:</strong> Stick with the default <code>-dns-remote</code> unless you have a specific reason to prioritize speed over anonymity and have tested that <code>-dns-local</code> is indeed faster for your target.
</Info>