This just in. Literally. Wonder why Amazon would cloak its host/name? (Let alone use Level 3 when it has a gazillion of its own server farms.)
Mozilla/4.0 (compatible; Linux 2.6.22) NetFront/3.4 Kindle/2.0 (screen 600x800)
(Level 3: 184.108.40.206 - 220.127.116.11; 18.104.22.168/8)
FYI: The app/bot/hybrid/whatever was redirected to a page on a private server (where I send all of Level 3, etc.), took the redirection, and hit the private server -- also no robots.txt -- but .html only (minus the page's graphic and .js; so bot-typical). Minutes later, the whatever was back, but only to the private server, and only requesting plain .html again.
FWIW: Found while poking around neighboring L3 IPs, a Amazon-claimed hostname:
[edited by: Pfui at 7:17 am (utc) on Mar. 29, 2009]