From Firefox I get a "Redirect Loop" error. That usually happens when the www forwards to the http://, and the http:// forwards to the www. Probably just a server config issue, not the site being taken down permanently.
I am getting the same problem. I have searched for a keyword in the "domain names" field and results are returned from all TLDs. If I try to select just dot coms, I get "no matching data". If I select just dot nets or other TLDs, I get a properly filtered result. Something is wrong on DNSaleprice ....