CNN.com: Domain Name Game Still Going Strong.:

Demand Media, based in Santa Monica, Calif., received $100 million in a funding round last July, led by Goldman Sachs (NYSE:GS) GS. Demand Media has raised $320 million since its launch two years ago.
Another big player, Oversee.net, last month said it received $150 million in a funding round from private equity firm Oak Hill Capital Partners. Oversee.net owns 700,000 domain names and helps service and maintain another 2.4 million domains owned by others.
Oversee also has a $100 million credit line from Bank of America . . .