Based on experience, all I can say is good luck. They do not respond to anyone.
Ryan From: NANOG <[email protected]> On Behalf Of James Dexter Sent: Tuesday, November 29, 2022 8:43 AM To: [email protected] Subject: Sites blocking ISP Addresses Dear list, We have address ranges that are being blocked by sites like Ticketmaster. Customer support is able to assist, and unable to receive a response from legal or hostmaster emails. What are the recommendations for requesting a removal from the blocked list at these sites?

