I was somewhat surprised that the CDN.net domain name sold for $185,000, as reported by DN Journal. The seller was Frank Schilling’s Name Administration, and the buyer appears to be Ditlev Bredahl of a company called OnApp, according to the Whois record from March 13.
I mentioned my surprise about the sale at dinner last night with a business friend, and he thought the price was reasonable. He is more familiar with the CDN acronym than I, and he briefly explained why he felt it had significant value.
Among plenty of other things, CDN stands for Content Delivery Network(s), and I found the video below, which features Mr. Bredahl speaking about the technology. The article in which this video appears also does a good job of explaining the CDN landscape.