A few days ago (when this actually launched), I was in a position where I actually had to map out their network some. The CDN nodes are all 17.253.*.22[1-4], and are located in Los Angeles (22), Chicago (12), Palo Alto (? this one I found confusing and also thought might be near New Jersey) (18), Dallas (8), Miami (6), Atlanta (4), New York (2), Seattle (20), San Jose (16), the Netherlands (32), the UK (34), Austria (66), Hong Kong (64), Japan (68), Singapore (80), and Germany (48).