It's not as unlimited as you might hope. For a typical provider, a large proportion of their traffic is going to go to a limited number of properties (e.g. fac

It's not as unlimited as you might hope. For a typical provider, a large proportion of their traffic is going to go to a limited number of properties (e.g. facebook, google, youtube). Each of those properties is only going to return a limited number of IP addresses, and all of the traffic is going to be to a very small number of ports (i.e. 443/80). I can well believe that clients connects via a single ISP to a single remote port a large multiple of times.