The nameservers are:
ns1.x10hosting.com
ns2.x10hosting.com
As for ASP, it's not supported at x10hosting. If you mean to use Asp.net, then a Premium account will have Mono 2.0 for you to use but there's no guarantee that it'll work. If you absolutely must use a fully supported ASP or Asp.net account, I recommend that you search for a windows host. x10hosting servers all use linux.