IPv4 Games

[Justine Tunney via NANOG <nanog () lists nanog org>]

I operate an online service at https://ipv4.games/ that invites people to
send http requests to my web server from a lot of different IP addresses.
In order to claim an IP, you need to successfully make a tcp three-way
handshake with a VM on Google's network.

Somehow a player in Europe named femboy.cat has successfully managed to
claim 20 million IPs, which is 9% of all IPv4 hosts according to Censys.

Does anyone have any idea how they're doing it?

Would anyone here be willing to be their North American rival?
_______________________________________________
NANOG mailing list 
https://lists.nanog.org/archives/list/nanog () lists nanog org/message/MMCCEQKA4UPGGWFWEBWLYKHTYCAOQIZS/