Hi,
Your CO.CC domain is not registered. You need to register it for free on the co.cc website http://www.co.cc/regist/domain_find.php?d=a2F3YWlpcGV0c2hvcA==&s=M1hL&m=ZnJlZQ== , then point its nameservers to x10s. They are:
ns1.x10hosting.com
ns2.x10hosting.com
When done, you may get this...