Bill Lewis wrote:

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?

- announcement of more specific routes - escalation at their NOC - if it's the UK, try some megaphone diplomacy on the uknof mailing list - talk to their upstream You could threaten lawyers and all that end of things, but bearing in mind that this sort of thing is rarely caused by malice, you're almost always better off being courteous but persistent in getting a mistake corrected. Nick