From Yuku Help

Domain Hosting Options

Domain Hosting will allow you to host your community under your own domain. Some of the benefits of this are:

• Domain Bookmarks: Your users can bookmark to yourdomain.com
• No Redirects: No more redirecting from yourdomain.com to yourdomain.yuku.com

In order for this to work, you need to make some changes with your domain registrar.

Name servers: In your domain registrar name server section change the name servers to:

1. ns1.yuku.com
2. ns2.yuku.com

IP address: If your name registrar requires IP address for the name server use the following:

1. 204.11.107.10
2. 204.11.107.11

'Note:' This change usually takes 24 hours to be applied.