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P-334WH User’s Guide
Appendix D IP Addresses and Subnetting
233
The following table shows class C IP address last octet values for each subnet.
Table 100   Eight Subnets 
SUBNET
SUBNET ADDRESS FIRST ADDRESS
LAST ADDRESS
BROADCAST 
ADDRESS
1
0
1
30
31
2
32
33
62
63
3
64
65
94
95
4
96
97
126
127
5
128
129
158
159
6
160
161
190
191
7
192
193
222
223
8
224
225
254
255
The following table is a summary for class “C” subnet planning.
Table 101   Class C Subnet Planning 
NO. “BORROWED” HOST 
BITS
SUBNET MASK
NO. SUBNETS
NO. HOSTS PER 
SUBNET
1
255.255.255.128 (/25)
2
126
2
255.255.255.192 (/26)
4
62
3
255.255.255.224 (/27)
8
30
4
255.255.255.240 (/28)
16
14
5
255.255.255.248 (/29)
32
6
6
255.255.255.252 (/30)
64
2
7
255.255.255.254 (/31)
128
1
Subnetting With Class A and Class B Networks. 
For class “A” and class “B” addresses the subnet mask also determines which bits are part of 
the network number and which are part of the host ID. 
A class “B” address has two host ID octets available for subnetting and a class “A” address has 
three host ID octets (see 
) available for subnetting.