[zAy0LfpBZLC8mAC]

BTW, I just noticed: No, you cannot realistically have thousands of customers behind the same IP. There are only 65535 TCP ports per IP address, just loading your typical website that loads resources from tons of domains can easily need a hundred ports at once.

[londons_explore]

You only need 1 port for a connection per domain. You can reuse the same source port for different domains.

So only 65,535 customers can establish a connection to facebook.com from the same ip.