Registrant:
Y Combinator LLC
320 Pioneer Way
Mountain View, CA 94041
In other words, someone bought the domain, and pointed it to the same IP. It's been mentioned before, but pg should do a redirect to the correct canonical domain, since there is nothing stopping the domain owner from hijacking, or doing otherwise bad things with it.
Hm, is that good news? I am not well versed in those black hat search engine scams. Like what if now Google gradually thinks hackerne.ws is the real hacker news, and eventually the owner of hackerne.ws makes it point somewhere else?
An HN member bought the domain and pointed it at news.ycombinator.com
Edit: There's also http://y.ww.com/ which was created by jacquesm when he was giving out subdomains to ww.com (http://news.ycombinator.com/item?id=1796231)