>It is a way of encoding an IP address.
>Rather than using the standard xxx.xxx.xxx.xxx you can encode it by
>performing simple maths on the numbers (which of course I have
>forgotten :( ) and generating a single number.
So in other words, as long as you know the formula, you can put one
of these period-less numbers in your browser to get any site you
fancy? The "unscrambling" is done at DNS level?