User blog comment:NoBanana/New Milestone/@comment-24899099-20150805164542/@comment-24108228-20150821091528

There would be, if it weren't for the fact that for us to IP ban, ROBLOX would have to give away the user's IP, as bans currently work by immediately kicking blacklisted usernames when they join (I think). For some reason or other, giving away IPs isn't allowed, so IP banning was never a feature that it would be possible for Scar to add.

In times like these, you have to remember that 303 is not a standalone game, and therefore we don't have as much freedom as we'd like.