I AB on 3 different accounts all on different proxys and one account in the attic on my actual IP all at the same time?
From my experience, each account is capable of getting iced, however if they are on proxies (and you have never logged into them with your actual IP) they will be treated as separate accounts according to TNT. However if one is flagged, and you do any trading between the 3 accounts, expect them all to be iced together.