Lars, Adam, Jasper, ... this discussion is taking a *very dangerous* turn. The RIPE NCC allocates IP address space in its role as a Regional Internet Registry and provides reverse DNS service as part of this. The RIPE NCC does that according to a set of policies developed by the local-ir working group which are aligned globally. The RIPE NCC does not, and in my opinion should never, have *authority* over routing policy set by ISPs or any other operational decision by ISPs for that matter. If one would go down ths route the RIPE NCC would in fact assume some sort of regulatory authority which is a Bad Idea(TM). Do not get me wrong. I agree with your intentions and I can get quite passionate about the strain various combinateions of carelessness, cluelessness and selfishness put on the BGP routing system. Also note that some of this strain comes from people using BGP as a method for traffic engineering in many ways BGP's designers never even had nightmares about. But the particular pressure mechanism you are suggesting is *not appropriate*. The best we can do is bring problems to the attention of those causing the problems and their (routing) peers. If this continues to get worse I expect that ISPs will start charging for announcements or something equivalent and that will produce the back-pressure needed. Again: The RIPE NCC does not, and should not, have this authority. Daniel