Michael, I assume you mean www.ubuntu.gr since gr.www.ubuntu.com doesn't exist for me either.
$ host www.ubuntu.gr www.ubuntu.gr is an alias for ubuntu.gr. ubuntu.gr has address 64.79.219.14
Michael, I assume you mean www.ubuntu.gr since gr.www.ubuntu.com doesn't exist for me either.
$ host www.ubuntu.gr
www.ubuntu.gr is an alias for ubuntu.gr.
ubuntu.gr has address 64.79.219.14