>Not being renowned for my maths skills, how do you work out how many ip addresses you can have.
>
>Knowning the range is from 0.0.0.0 to 255.255.255.255.
>
>Thanks
>Kev
>
>BTW I thought it was 255 * 255 * 255 * 255!

A key part of your question is "how many you can have", and what you mean by it.
Some are reserved for broadcasting, streaming data and local private networks.
Here is a reminder primer:
http://www.tldp.org/HOWTO/Net-HOWTO/x150.html#AEN167

JLK