Is this a subdomain for the purposes of a CDN?

[hingorama]

(03-23-2012 02:27 PM)SWortham Wrote:  Whenever possible it's best to combine files to eliminate the need for sharding domains. But perhaps one of the best uses for it is a website with a product database including tons of images, since in that scenario you're unable to create CSS sprites out of the images. Look at Amazon's use of subdomains as an example.

At amazon, they seem to use single level sub-domains and quite a few different domains as well. Any large player that uses in the format

name1.static.domain.com
name2.static.domain.com ?

In steve's blog live.com seemed to be using as stated above. Others?