How long does a registration last? Can it be renewed?

Currently the initial registration period is 1 year. The maximum registration period is 10 years

yes, u can renew your domain name

Can I automatically renew my Domain Name?

Yes. The user has the option to renew a Domain Name from 1 to 10 years at a time. Go to Manage Domains and select renew registrations. Select the Domain Name you wish to renew, enter your payment details and click the renew button.