Classes

Classes

Divided into 2 segments
Network Segment / Host Segment
Ex 192.168.1 / .1

Class A  - More networks than hosts - more useful for ISPs
1.0.0.0 - 126.0.0.0
255.0.0.0

127.0.0.1 - Reserved for local host

Class B
128.0.0.0 - 191.255.0.0
255.255.0.0

Class C - Typically for home computer or router
192.0.0.0 - 223.255.255.0
255.255.255.0

Class D - Multicasting
224.0.0.0 - 239.0.0.0