Hi NANOG, We're an ISP providing residential and business fixed internet services, and all of our ranges are blocked from accessing ticketmaster with the attached "Pardon the interruption, you are superhuman or a bot" message and have been for some time; customer complaint velocity has increased especially as of late so it's been a priority to try and get this working. We've done extensive checking to ensure there is no bot activity or scalping transiting our network, we aren't using cgNAT - each IP is a specific customer end installation (home/office), and we have rPKI set up. Is there anyone from Ticketmaster on list who'd be willing to contact me for a conversation to see if we can resolve this for our mutual customers? Or could anyone provide me with a decent technical contact if they might have one? I would be eternally grateful. I have tried "fan support" numerous times, which provided helpful (/s) suggestions like "try purchasing tickets over LTE", or "use a different internet connection, like at a coffee shop", or "contact your ISP" (myself? lol), depending on the day. Also tried their "Global Monitoring Support" organization by phone and by email with little success. ARIN contacts bounce back as a 550 5.7.133 RESOLVER.RST.SenderNotAuthenticatedForGroup, looks like o365 configured to not accept external messages. If you've successfully managed to work this out with them, have any tips, or recognize what WAF/engine they're using from the page layout with UUID at the bottom to help me identify who else I might try contacting to see about getting recategorized, I would really appreciate hearing from you. Thanks a bunch! Alex Buie Senior Cloud Operations Engineer 450 Century Pkwy # 100 Allen, TX 75013 D: 469-884-0225 | www.cytracom.com