Subnetting adalah sebuah teknik yang mengizinkan para administrator jaringan untuk memanfaatkan 32 bit IP address yang tersedia dengan lebih efisien. Tekniksubnetting membuat skala jaringan lebih luas dan tidak dibatas oleh kelas-kelas IP (IP Classes) A, B, dan C yang sudah diatur
|
Addresses
|
Hosts
|
Netmask
|
Amount of a Class C
|
/30
|
4
|
2
|
255.255.255.252
|
1/64
|
/29
|
8
|
6
|
255.255.255.248
|
1/32
|
/28
|
16
|
14
|
255.255.255.240
|
1/16
|
/27
|
32
|
30
|
255.255.255.224
|
1/8
|
/26
|
64
|
62
|
255.255.255.192
|
1/4
|
/25
|
128
|
126
|
255.255.255.128
|
1/2
|
/24
|
256
|
254
|
255.255.255.0
|
1
|
/23
|
512
|
510
|
255.255.254.0
|
2
|
/22
|
1024
|
1022
|
255.255.252.0
|
4
|
/21
|
2048
|
2046
|
255.255.248.0
|
8
|
/20
|
4096
|
4094
|
255.255.240.0
|
16
|
/19
|
8192
|
8190
|
255.255.224.0
|
32
|
/18
|
16384
|
16382
|
255.255.192.0
|
64
|
/17
|
32768
|
32766
|
255.255.128.0
|
128
|
/16
|
65536
|
65534
|
255.255.0.0
|
256
|
Guide to sub-class C blocks
/25 -- 2 Subnets -- 126 Hosts/Subnet
Network #
|
IP Range
|
Broadcast
|
.0
|
.1-.126
|
.127
|
.128
|
.129-.254
|
.255
|
|
/30 -- 64 Subnets -- 2 Hosts/Subnet
Network #
|
IP Range
|
Broadcast
|
.0
|
.1-.2
|
.3
|
.4
|
.5-.6
|
.7
|
.8
|
.9-.10
|
.11
|
.12
|
.13-.14
|
.15
|
.16
|
.17-.18
|
.19
|
.20
|
.21-.22
|
.23
|
.24
|
.25-.26
|
.27
|
.28
|
.29-.30
|
.31
|
.32
|
.33-.34
|
.35
|
.36
|
.37-.38
|
.39
|
.40
|
.41-.42
|
.43
|
.44
|
.45-.46
|
.47
|
.48
|
.49-.50
|
.51
|
.52
|
.53-.54
|
.55
|
.56
|
.57-.58
|
.59
|
.60
|
.61-.62
|
.63
|
.64
|
.65-.66
|
.67
|
.68
|
.69-.70
|
.71
|
.72
|
.73-.74
|
.75
|
.76
|
.77-.78
|
.79
|
.80
|
.81-.82
|
.83
|
.84
|
.85-.86
|
.87
|
.88
|
.89-.90
|
.91
|
.92
|
.93-.94
|
.95
|
.96
|
.97-.98
|
.99
|
.100
|
.101-.102
|
.103
|
.104
|
.105-.106
|
.107
|
.108
|
.109-.110
|
.111
|
.112
|
.113-.114
|
.115
|
.116
|
.117-.118
|
.119
|
.120
|
.121-.122
|
.123
|
.124
|
.125-.126
|
.127
|
.128
|
.129-.130
|
.131
|
.132
|
.133-.134
|
.135
|
.136
|
.137-.138
|
.139
|
.140
|
.141-.142
|
.143
|
.144
|
.145-.146
|
.147
|
.148
|
.149-.150
|
.151
|
.152
|
.153-.154
|
.155
|
.156
|
.157-.158
|
.159
|
.160
|
.161-.162
|
.163
|
.164
|
.165-.166
|
.167
|
.168
|
.169-.170
|
.171
|
.172
|
.173-.174
|
.175
|
.176
|
.177-.178
|
.179
|
.180
|
.181-.182
|
.183
|
.184
|
.185-.186
|
.187
|
.188
|
.189-.190
|
.191
|
.192
|
.193-.194
|
.195
|
.196
|
.197-.198
|
.199
|
.200
|
.201-.202
|
.203
|
.204
|
.205-.206
|
.207
|
.208
|
.209-.210
|
.211
|
.212
|
.213-.214
|
.215
|
.216
|
.217-.218
|
.219
|
.220
|
.221-.222
|
.223
|
.224
|
.225-.226
|
.227
|
.228
|
.229-.230
|
.231
|
.232
|
.233-.234
|
.235
|
.236
|
.237-.238
|
.239
|
.240
|
.241-.242
|
.243
|
.244
|
.245-.246
|
.247
|
.248
|
.249-.250
|
.251
|
.252
|
.253-.254
|
.255
|
|
/26 -- 4 Subnets -- 62 Hosts/Subnet
Network #
|
IP Range
|
Broadcast
|
.0
|
.1-.62
|
.63
|
.64
|
.65-.126
|
.127
|
.128
|
.129-.190
|
.191
|
.192
|
.193-.254
|
.255
|
|
/27 -- 8 Subnets -- 30 Hosts/Subnet
Network #
|
IP Range
|
Broadcast
|
.0
|
.1-.30
|
.31
|
.32
|
.33-.62
|
.63
|
.64
|
.65-.94
|
.95
|
.96
|
.97-.126
|
.127
|
.128
|
.129-.158
|
.159
|
.160
|
.161-.190
|
.191
|
.192
|
.193-.222
|
.223
|
.224
|
.225-.254
|
.255
|
|
/28 -- 16 Subnets -- 14 Hosts/Subnet
Network #
|
IP Range
|
Broadcast
|
.0
|
.1-.14
|
.15
|
.16
|
.17-.30
|
.31
|
.32
|
.33-.46
|
.47
|
.48
|
.49-.62
|
.63
|
.64
|
.65-.78
|
.79
|
.80
|
.81-.94
|
.95
|
.96
|
.97-.110
|
.111
|
.112
|
.113-.126
|
.127
|
.128
|
.129-.142
|
.143
|
.144
|
.145-.158
|
.159
|
.160
|
.161-.174
|
.175
|
.176
|
.177-.190
|
.191
|
.192
|
.193-.206
|
.207
|
.208
|
.209-.222
|
.223
|
.224
|
.225-.238
|
.239
|
.240
|
.241-.254
|
.255
|
|
/29 -- 32 Subnets -- 6 Hosts/Subnet
Network #
|
IP Range
|
Broadcast
|
.0
|
.1-.6
|
.7
|
.8
|
.9-.14
|
.15
|
.16
|
.17-.22
|
.23
|
.24
|
.25-.30
|
.31
|
.32
|
.33-.38
|
.39
|
.40
|
.41-.46
|
.47
|
.48
|
.49-.54
|
.55
|
.56
|
.57-.62
|
.63
|
.64
|
.65-.70
|
.71
|
.72
|
.73-.78
|
.79
|
.80
|
.81-.86
|
.87
|
.88
|
.89-.94
|
.95
|
.96
|
.97-.102
|
.103
|
.104
|
.105-.110
|
.111
|
.112
|
.113-.118
|
.119
|
.120
|
.121-.126
|
.127
|
.128
|
.129-.134
|
.135
|
.136
|
.137-.142
|
.143
|
.144
|
.145-.150
|
.151
|
.152
|
.153-.158
|
.159
|
.160
|
.161-.166
|
.167
|
.168
|
.169-.174
|
.175
|
.176
|
.177-.182
|
.183
|
.184
|
.185-.190
|
.191
|
.192
|
.193-.198
|
.199
|
.200
|
.201-.206
|
.207
|
.208
|
.209-.214
|
.215
|
.216
|
.217-.222
|
.223
|
.224
|
.225-.230
|
.231
|
.232
|
.233-.238
|
.239
|
.240
|
.241-.246
|
.247
|
.248
|
.249-.254
|
.255
|
|
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