IP Addresses, Netmask etc.
B.7.2
Netmask Examples
Netmask
Host bits
255.255.255.252
2
255.255.255.248
3
255.255.255.240
4
255.255.255.224
5
255.255.255.192
6
255.255.255.128
7
255.255.255.0
8
255.255.254.0
9
255.255.252.0
10
255.255.248.0
11
.
.
.
.
255.128.0.0
23
255.0.0.0
24
Figure B-2
B.7.3
Private IP Networks and the Internet
If your network is not connected to the Internet and there are no plans to
make such a connection you may use any IP address you wish.
If you are not connected to the Internet and have plans to connect, or you
are connected to the Internet and want to operate your NTSes on an Intranet
you should use one of the sub-networks below. These network numbers
have been reserved for such networks. If you have any questions about IP
assignment consult your Network Administrator.
Class A
10.x.x.x
Class B
172.16.x.x
Class C
192.168.0.x