My old IP range was banned even though I've never been a member of the site. Now that I've moved though I'm on a different, unbanned range.
Banned From a Pr0n Site,If you get redirected to the FAQ at PureTNA that means that your IP range has been banned. They've been known to randomly ban IP ranges for apparently no reason at all (and yet still openly allow members to sign up through unbanned proxies).
My old IP range was banned even though I've never been a member of the site. Now that I've moved though I'm on a different, unbanned range.