In order to Lock/Unlock domain in DirectI one need to perform below mentioned steps:
1) Login to your DirectI Control Panel, search for the domain name and proceed to the Order Information view.
2) Click the Lock / Suspend link.
3) On the following page:
>> To Lock the domain name: select the Lock radio button, enter the reason for Locking and click the Update button.
>> To Unlock the domain name: select the No Restriction radio button and click the Update button.