Table 4-5 Private Ip Address Ranges - ZyXEL Communications Intelligent Broadband Sharing Gateway P-324 User Manual

You can obtain your IP address from the IANA, from an ISP or have it assigned by a private network. If
you belong to a small organization and your Internet access is through an ISP, the ISP can provide you with
the Internet addresses for your local networks. On the other hand, if you are part of a much larger
organization, you should consult your network administrator for the appropriate IP addresses.
Regardless of your particular situation, do not create an arbitrary IP address;
always follow the guidelines above. For more information on address
assignment, please refer to RFC 1597, Address Allocation for Private Internets
and RFC 1466, Guidelines for Management of IP Address Space.
4.3.2 IP Address and Subnet Mask
Similar to the way houses on a street share a common street name, so too do computers on a LAN share
one common network number.
Where you obtain your network number depends on your particular situation. If the ISP or your network
administrator assigns you a block of registered IP addresses, follow their instructions in selecting the IP
addresses and the subnet mask.
If the ISP did not explicitly give you an IP network number, then most likely you have a single user
account and the ISP will assign you a dynamic IP address when the connection is established. If this is the
case, it is recommended that you select a network number from 192.168.0.0 to 192.168.255.0 and you must
enable the Network Address Translation (NAT) feature of the Prestige. The Internet Assigned Number
Authority (IANA) reserved this block of addresses specifically for private use; please do not use any other
number unless you are told otherwise. Let's say you select 192.168.1.0 as the network number; which
covers 254 individual addresses, from 192.168.1.1 to 192.168.1.254 (zero and 255 are reserved). In other
words, the first three numbers specify the network number while the last number identifies an individual
workstation on that network.
4-8

Table 4-5 Private IP Address Ranges

10.0.0.0 -
172.16.0.0 -
192.168.0.0 -
10.255.255.255
172.31.255.255
192.168.255.255
Wizard Setup