Originally Posted by pompousjohn

It's not an open proxy, I am thinking maybe a cel phone tower or similar service. I am seeing these more and more in the US but most identify as belonging to AT&T, Cingular, recognizable companies like that.

I am analyzing the customer behavior onsite as I think that will tell the tale as to whether I am better off without this IP range or not. One curious thing is that around the middle of the month I blocked a number of popular prepaid gift cards that were being abused on my PPS Programs, and about that time joins from this range almost completely stopped. But that could still be a coincidence. A cel phone provider could have changed the way they handled mobile internet traffic for example.