On Tue, Jan 7, 2020 at 08:51 John Curran <jcur...@arin.net> wrote: > On 7 Jan 2020, at 5:01 AM, Martijn Schmidt via NANOG <nanog@nanog.org> > wrote: > > > > Out of curiosity, since we aren't affected by this ourselves, I know of > cases where Cogent has sub-allocated IP space to its customers but which > those customers originate from their own ASN and then announce to multiple > upstream providers. > > > > So while the IP space is registered to Cogent and allocated to its > customer, the AS-path might be something like ^174_456$ but it's entirely > possible that ARIN would observe it as ^123_456$ instead. Are such IP > address blocks affected by the suspension? > > As noted earlier, ARIN has suspended service for all Cogent-registered IP > address blocks - this is being done as a discrete IP block access list > applied to relevant ARIN Whois services, so the routing of the blocks are > immaterial - a customer using a suballocation of Cogent space could be > affected but customers with their own IP blocks blocks that are simply > being routed by Cogent are not affected.
This is a disproportionate response IMHO. $0.02 YMMV, -M<
