Class C (192-223) In Class C there is 3 network bits and one host bit.
16 384 networks are available in Class B network.
A class C network supports the most networks - the first three octets or 24 bits gives the largest grouping of networks.
The idea is to use networks that are larger than a traditional (i.e., classful) network - especially, larger than a class-C network.
First octet rule for each class:Class A: 0xxxxxxxClass B: 10xxxxxxClass C: 110xxxxxClass A range is 0 - 1270.0.0.0 and 127.0.0.0 are not "routable" IP addresses. One defines all networks and the other is the loopback. We have a total of 126 usable networks and 16,777,214 usable hostaddresses per network. There are even less if we don't count the private address of 10.0.0.0 (RFC 1918).Class B range is 128 - 191There are 16,384 total networks in this class; that's including the private addresses of 172.16.0.0 - 172.31.0.0 (RFC 1918). There are a total of 65,534 usable host addresses per network.Class C range is 192 - 223There are 2,097,152 total networks in this class; that's including the private addresses of 192.168.0.0 - 192.168.255.0 (RFC 1918). There are 254 usable hosts addresses per network.
255
Class C network if you are not subnetting.
A class C network has a subnet mask of 255.255.255.0 and can have 254 IP addresses, for example from 192.168.0.1-192.168.0.255 A class B network has a subnet mask of 255.255.0.0 and can have 255 X 254 IP addresses, for example from 192.168.0.1 - 192.168.255.255
17
A supernet is when two or more smaller networks are combined into a larger network. For example, you can combine two of the traditional class C networks, 200.3.6.0/24 and 200.3.7.0/24, into one larger network, 200.3.6.0/23.
A class C network.
For public addresses, you use whatever is assigned to you. You probably won't be able to find available class A or class B networks, so you will use a class C network, or part of it. Soon you won't be able to get that, either (time to switch to IPv6).For a private network, a class A network - 10.0.0.0 /8 - gives you the greatest flexibility, because of the larger address space.
2,113,658