Hi Bill, What subnet size are you talking about? Several small /24 or something like /19 etc? You can hijack your own prefixes as a quick fix if you're dealing with prefixes >/24: just announce more specific /24 to get the issue mostly bypassed. If this is no option for you, please feel free to share some more details like ASN and affected prefixes. With this details most users will be able to help you to track down the issue :). Best regards Jürgen JARITSCH CEO, Co-Founder JMP Technology Services GmbH Zugerstrasse 76 B CH 6340 Baar Switzerland E-Mail: juergen.jaritsch@jmpts.ch Mobil: +43-660-8889638 -----Ursprüngliche Nachricht----- Von: members-discuss [mailto:members-discuss-bounces@ripe.net] Im Auftrag von Bill Lewis Gesendet: Montag, 22. Mai 2017 11:45 An: members-discuss@ripe.net Betreff: [members-discuss] Provider announcing IP ranges when they should not be. HI all, Not sure where I should post this so trying here first. Quick question, we changed hosts recently as the former host are moving their DC at the end of this month and our services would not work from their new location (wireless back haul). We asked them to remove two of our IP blocks from their routers so they are no longer announced there as we have now got them announced at the new host. Last Friday they confirmed by email they had done this, but it is clear they have not as reverse trace routes from some local (to London) sites show they are still announcing them even today. This means many resources are unreachable by our clients and is causing significant disruption. We have again chased them to resolve this. Is there any mechanism in place or tools available to make it easy to either block this false route or have action taken against the provider for failing to stop it? Thank you -- Bill Lewis Kijoma Solutions Ltd ---- If you don't want to receive emails from the RIPE NCC members-discuss mailing list, please log in to your LIR Portal account and go to the general page: https://lirportal.ripe.net/general/ Click on "Edit my LIR details", under "Subscribed Mailing Lists". From here, you can add or remove addresses.