It is possible to change holder and address details in the WHOIS for your domain. You can do this yourself by logging in to your Control Panel. As soon as you have logged in to the control panel, you can take the following steps:
- Go to 'Domains & Hosting'
- Click the domain for which you would like to modify the registrant details
- On the right hand side you can use the button "Manage contact information"
- This is where you can edit the contact details for the WHOIS of your domain
Depending on the extension, costs may be charged for changing the holder of a domain name. In that case you will receive a proposal, which you may confirm if desired.