are you sure that is the list theymos used for proxyban? is it confirmed?
I think theymos made his own list based on a few external lists and added some more
When someone is banned, their IP and some of their neighboring IPs receive evil points.
this shows how he is adding new IPs to the list regularly based on previous banned account's IP
so eventhough an IP isn't listed on any of those blacklist (RBL, DNSBL), it may be listed on this forum's proxyban list