> For the complete documentation index, see [llms.txt](https://doc.9http.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.9http.com/en/faq/product-problem/what-is-a-cdk-which-plans-support-it.md).

# What is a CDK? Which plans support it?

A CDK is a redemption code used to redeem Dynamic Residential Proxies traffic balance. Currently, only Dynamic Residential Proxies traffic plans support generating and redeeming CDKs.

### **Where can a CDK be redeemed?**

Go to the **CDKey** menu in the console and enter the CDK in the redemption code field to complete the redemption.

<figure><img src="https://693799640-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FUHl75DulbmsnHqecw7af%2Fuploads%2FPP3mb8Xli3PpJZvAxXq1%2Fimage.png?alt=media&amp;token=0418142e-051c-409e-a00f-3f872a571dc5" alt=""><figcaption></figcaption></figure>