Dear Arnd, On Wed, Jan 28, 2015 at 05:05:15PM +0800, Arnd Vehling wrote:

today i recognized a spambot attack from "62.122.74.100" which lies in an un-assigned ip-range. How to correctly report this?

I'd report this to the upstream of this rogue BGP announcement and the originator itself. https://stat.ripe.net/62.122.74.0%2F23#tabId=routing example path: 62.122.74.0/23 BGP.as_path: 50156 35701 49964 1299 6453 46786 5577 46786 noc@iptransit.com 5577 abuse@as5577.net The existance of this route means that both AS46786 and AS6453 are not filtering their customers properly :-( Kind regards, Job