Here is what I got from BGPMon- MY AS is 15053 Detected new prefix: 134.37.2.0/23 Update time: 2019-06-11 17:58 (UTC) Detected by #peers: 70 Announced by: AS15053 (ROLL-GLOBAL-LLC - Roll Global LLC, US) Upstream AS: AS15001 (ITCONVERGENCE-COM - IT Convergence Inc., US) ASpath: 394256 174 702 25213 25213 25213 15001 15053 I tried contacting the upstream provider and they were no help :Contact - IT Convergence | | | | | | | | | | | Contact - IT Convergence Contact us today to learn more about how your business can benefit by partnering with IT Convergence. | | | On Wednesday, June 12, 2019, 9:34:16 AM PDT, Job Snijders <job@ntt.net> wrote: Can you share more details? Perhaps we can put the human social network to good use. Other than that this is annoying - are right now operationally impacted? Kind regards, Job On Wed, Jun 12, 2019 at 12:24 Filip Hruska <fhr@fhrnet.eu> wrote: I would contact upstreams of the upstream then. This is quite a serious offence and they should help you. Regards, Filip On 12 June 2019 6:20:42 pm GMT+02:00, Philip Lavine <source_route@yahoo.com> wrote: yeah I did they are some MSP in India. No help. On Wednesday, June 12, 2019, 9:15:51 AM PDT, Filip Hruska <fhr@fhrnet.eu> wrote: Contact the offending upstreams. Filip On 12 June 2019 6:05:58 pm GMT+02:00, Philip Lavine via NANOG <nanog@nanog.org> wrote: What is the procedure to have another party to cease and desist in using my AS number? Thx -- Sent from my Android device with K-9 Mail. Please excuse my brevity.