I've used a series of anon IPs  I don't keep track of which ones they are, but (I suppose you'll just block all of these) they include 88.149.150.47, 83.211.48.173, 83.77.214.114, 84.162.18.6, 63.203.204.231, 24.57.143.66 and others. I've never used another named account.