Internet protocol (IP) defines the structure of packet of data (datagrams) that are exchanged over the network.
IP address classes have a following range:
Class A: 0.0.0.0 to 127.255.255.255
Class B: 128.0.0.0 to 192.255.255.255
Class C: 192.0.0.0 to 223.255.255.255
Class D: 224.0.0.0 to 239.255.255.255
Class E: 240.0.0.0 to 247.255.255.255
Run ifconfig at your terminal to see you IP and refer back in this article for classes.
