dstiles - 5:01 pm on Jan 17, 2012 (gmt 0)
New (to me) Amazon range, registered September 2011...
NetRange: 220.127.116.11 - 18.104.22.168
Comment: The activity you have detected originates from a dynamic hosting environment.
Single hit today from bot calling itself linkdex.com/v2.0. No idea about robots.txt without delving deeper. Page was an unusual mid-site one.