The whois contact details of a domain can be updated by following the instructions below:
1. Log into your Name.com account and click the 'Account' button at the top of the screen
2. Click the domain you wish to update
3. In the control panel, click 'Edit Contacts'. Then update the information you wish to change in respective field and click the 'Update' button at the bottom left of the screen. To have all the information changed in one move, simply check the box for "Make all contact information the same as Registrant."
Once you have done this, it may take a few hours for the changes to fully propagate throughout the internet.