cr1t1calh1t - 2:12 am on Dec 8, 2011 (gmt 0)

Here's a few things that jump out at me:

1. .info - sure they're inexpensive, but they got whored out by spammers and scammers a year or two ago, and are now the bad-neighborhood equivalent for domains... did you use domain privacy?
2. Hosts usually assign IPs from a contiguous range of IPs that they've been assigned. I'm no expert on the subject, but it seems like while you indeed have unique IPs, and be from two different C-blocks, the IPs would be very closely numbered, possibly even in order.
3. Footprint - by having so many links coming in from so many .info sites on the same two C-blocks, you're probably creating a discernable link-farm footprint. At best, once your link network is discovered, these links will be devalued. Worst case, the sites you are linking to will be penalized for participating in a link scheme if the link network is connected to your main sites.

cr1t1cal