24
A.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
A.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.
IP Addresses, Netmask etc.
A.7.4. Network RFC’s
For more information regarding IP addressing see the following documents. These can be
located on the World Wide Web using one of the directories or indices:
RFC 950 Internet Standard Subnetting Procedure
RFC 1700 Assigned Numbers
RFC 1117 Internet Numbers
RFC 1597 Address Allocation for Private Internets.
Binary to HEX Conversion
