http://network-tools.com/default.asp?prog=dnsrec&host=ne...
http://network-tools.com/default.asp?prog=dnsrec&host=ha...
Compare it with the real HN domain (news.ycombinator.com): http://network-tools.com/default.asp?prog=dnsrec&host=ne...
I dunno about hackerne.ws, but the ycombinator.com and .net domains look like they've got the same information. Perhaps someone with more DNS experience can do a little more digging.
EDIT: Here's the WHOIS info for the contact email (dns@jomax.net) for hackerne.ws: http://who.godaddy.com/whoischeck.aspx?Domain=JOMAX.NET