Hi NANOG, We are a group of researchers from the KTH Royal Institute of Technology (Sweden). Starting from May 9 until May 31, we plan to conduct a research study involving AS-PATH poisoning to measure how reliable route collectors are to report BGP poisoned routes. We will use the PEERING Testbed [1] to announce the following two prefixes: - 184.164.236.0/24 - 184.164.237.0/24 for our AS-path poisoning experiments. The above experimental prefixes do not host any production services, hence user traffic will *not* be affected. Furthermore, we will always start the AS-PATH with the correct ASN as the origin. Lastly, to keep the AS-PATH short, we will announce no more than four Poisoned ASNs per announcement. The frequency of the announcements will not exceed four per hour. If, for any reason, you want to opt out from us using your ASN for our experiments, you can do so in the following form before May 9: https://forms.gle/ZvZaodndPhCqMvR89 I remain at your disposal for any questions. Best regards, Alexandros [1] https://peering.ee.columbia.edu/