"Full featured DNS to manage your domains. Master and slave support and you can import a zone from a remote nameserver."

Does it means that I can use linode as my own DNS server out of the box?
I need to be able to add my domains to my own DNS server.
Is it possible here?

Yes you can use linode to serve your DNS records, the name servers are
ns1.linode.com
ns2.linode.com
ns3.linode.com
ns4.linode.com
ns5.linode.com
You need at least one linode in your account for DNS records to be hosted, DNS servers are updated every 15th minute past the hour.

_________________
Paid support
How to ask for help
1. Give details of your problem
2. Post any errors
3. Post relevant logs.
4. Don't hide details i.e. your domain, it just makes things harder
5. Be polite or you'll be eaten by a grue