The maximum period of registration time allowed for a domain name is ten years. For domain renewals, the maximum period allowed is what can be added to the existing registration to equal ten years. For example, if a domain name has four years left on its registration, you can only add a maximum of six additional years.
At checkout, select the number of years you want to register or renew a domain for from the drop-down menu. The maximum number of years allowed will automatically be displayed.