[Caddie]

Originally Posted by Andreas

Basically any IP address consists of two portions.One identifies the network and the other the device or the node within that network.
Here is a quick classification of various IP addresses:

Class A : It can support 126 network addresses, each containing 16 million nodes
Class B : This can support 16,000 network addresses, each containing 65,000 nodes.
Class C : It can support more than 2 million network addresses, each containing 254 nodes.
Class D : This class of IPs are reserved for multicast purposes.
Class E : This class of IP addresses are reserved for testing purposes and not assigned for public usage.

Hope this helps.

Thanks for that. I hadn't ever taken the time to look up each of the types other than the Class C IPs and that was only because I kept reading about the SEO sites buying tons of them.