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by dec0dedab0de 1223 days ago
They could be giving out different IP (or CNAME) for people using their DNS. Then the site is just slightly different depending on how it is accessed. or i suppose they could be looking at logs of the ips using their dns and checking all visitors to the website, but that would be wild.

ooh they could also have a host that is only resolvable from those servers, and have the front end dynamically load that message from that host. and if it fails it does not show anything.