ContextAd Bot

[keyplyr]

IP: 67.214.159.71
UA: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 5.0;.NET CLR 1.0.3705; ContextAd Bot 1.0)

CONTEXTWEB
67.214.159.64 - 67.214.159.127

Part of the KDDI Group, New York, NY
67.214.144.0 - 67.214.159.255

robots.txt: no

[upside]

They also use 67.214.159.70

I've only seen them on sites that display contextweb advertising.