Re: Lightly used IP addresses

I've tried to deal with that a few times - mainly by writing up the first upstream AS. Usually they don't care (and every time I have noticed someone blatantly stealing space, it's been spammers).

Has there ever been a case where ARIN has tried to take a block back from a party to whom they had allocated it and doesn't want to give it back? My impression is that stolen space is all swamp or legacy or abandoned, but I really don't know. In case it's not obvious, I'm not advocating that people thumb their noses at ARIN, but I don't see any obvious way to avoid my scenario. R's, John