A link is down somewhere in Alter.net's network. Whether it be WorldWideDNS's or their provider, etc (up the chain).
murdmath, zoneedit does not provide the services t*a*.com requires. This would be secondary DNS hosting with instant zone reloads, and allow at least three million DNS queries per year.
Jay, you or your provider is still caching your domain lookups. Otherwise it is also broken (same with mine).
Brad..