December 2018
Beginner
320 pages
8h 57m
English
Content preview from CentOS Quick Start Guide
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Public classes
There are five different public IP address classes from A to E. Here, classes A, B, and C are divided into two parts: network address (short for Net ID) and host address (short for Host ID). Net ID identifies the network and Host ID identifies the host on the network as shown in table here:
|
Public class |
Octet 1 |
Octet 2 |
Octet 3 |
Octet 4 |
Range |
|
Class A |
Net ID |
Host ID |
Host ID |
Host ID |
1.0.0.0 to 127.255.255.255 |
|
Class B |
Net ID |
Net ID |
Host ID |
Host ID |
128.0.0.0 to 191.255.255.255 |
|
Class C |
Net ID |
Net ID |
Net ID |
Host ID |
192.0.0.0 to 223.255.255.255 |
|
Class D |
Multicast address |
224.0.0.0 to 239.255.255.255 |
|||
|
Class E |
Reserved for the future |
240.0.0.0 to 255.255.255.254 |
|||
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