ip
ipku.in

IPv4 Subnet Calculator

Enter an IP with a CIDR prefix or a subnet mask to see its network, broadcast, host range, and host count. You can also split the network into smaller subnets.

$ ipcalc
Try:192.168.1.10/2410.0.0.0/8172.16.5.4/20203.0.113.9/29
IPv6 calculator →
private IP (RFC 1918)10.3.56.0/24
network10.3.56.0/24
broadcast10.3.56.255
first host10.3.56.1
last host10.3.56.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.3.56.0/24
address00001010.00000011.00111000.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.00000011.00111000.00000000
broadcast00001010.00000011.00111000.11111111
green = network part, grey = host part
hex0x0a033800
decimal167983104
reverse dns0.56.3.10.in-addr.arpa
ipv4-mapped::ffff:a03:3800

/24 split into /32 · 256 subnets

close ×
#networkhost rangebroadcast
110.3.56.0/3210.3.56.0 – 10.3.56.010.3.56.0
210.3.56.1/3210.3.56.1 – 10.3.56.110.3.56.1
310.3.56.2/3210.3.56.2 – 10.3.56.210.3.56.2
410.3.56.3/3210.3.56.3 – 10.3.56.310.3.56.3
510.3.56.4/3210.3.56.4 – 10.3.56.410.3.56.4
610.3.56.5/3210.3.56.5 – 10.3.56.510.3.56.5
710.3.56.6/3210.3.56.6 – 10.3.56.610.3.56.6
810.3.56.7/3210.3.56.7 – 10.3.56.710.3.56.7
910.3.56.8/3210.3.56.8 – 10.3.56.810.3.56.8
1010.3.56.9/3210.3.56.9 – 10.3.56.910.3.56.9
1110.3.56.10/3210.3.56.10 – 10.3.56.1010.3.56.10
1210.3.56.11/3210.3.56.11 – 10.3.56.1110.3.56.11
1310.3.56.12/3210.3.56.12 – 10.3.56.1210.3.56.12
1410.3.56.13/3210.3.56.13 – 10.3.56.1310.3.56.13
1510.3.56.14/3210.3.56.14 – 10.3.56.1410.3.56.14
1610.3.56.15/3210.3.56.15 – 10.3.56.1510.3.56.15
1710.3.56.16/3210.3.56.16 – 10.3.56.1610.3.56.16
1810.3.56.17/3210.3.56.17 – 10.3.56.1710.3.56.17
1910.3.56.18/3210.3.56.18 – 10.3.56.1810.3.56.18
2010.3.56.19/3210.3.56.19 – 10.3.56.1910.3.56.19
2110.3.56.20/3210.3.56.20 – 10.3.56.2010.3.56.20
2210.3.56.21/3210.3.56.21 – 10.3.56.2110.3.56.21
2310.3.56.22/3210.3.56.22 – 10.3.56.2210.3.56.22
2410.3.56.23/3210.3.56.23 – 10.3.56.2310.3.56.23
2510.3.56.24/3210.3.56.24 – 10.3.56.2410.3.56.24
2610.3.56.25/3210.3.56.25 – 10.3.56.2510.3.56.25
2710.3.56.26/3210.3.56.26 – 10.3.56.2610.3.56.26
2810.3.56.27/3210.3.56.27 – 10.3.56.2710.3.56.27
2910.3.56.28/3210.3.56.28 – 10.3.56.2810.3.56.28
3010.3.56.29/3210.3.56.29 – 10.3.56.2910.3.56.29
3110.3.56.30/3210.3.56.30 – 10.3.56.3010.3.56.30
3210.3.56.31/3210.3.56.31 – 10.3.56.3110.3.56.31
3310.3.56.32/3210.3.56.32 – 10.3.56.3210.3.56.32
3410.3.56.33/3210.3.56.33 – 10.3.56.3310.3.56.33
3510.3.56.34/3210.3.56.34 – 10.3.56.3410.3.56.34
3610.3.56.35/3210.3.56.35 – 10.3.56.3510.3.56.35
3710.3.56.36/3210.3.56.36 – 10.3.56.3610.3.56.36
3810.3.56.37/3210.3.56.37 – 10.3.56.3710.3.56.37
3910.3.56.38/3210.3.56.38 – 10.3.56.3810.3.56.38
4010.3.56.39/3210.3.56.39 – 10.3.56.3910.3.56.39
4110.3.56.40/3210.3.56.40 – 10.3.56.4010.3.56.40
4210.3.56.41/3210.3.56.41 – 10.3.56.4110.3.56.41
4310.3.56.42/3210.3.56.42 – 10.3.56.4210.3.56.42
4410.3.56.43/3210.3.56.43 – 10.3.56.4310.3.56.43
4510.3.56.44/3210.3.56.44 – 10.3.56.4410.3.56.44
4610.3.56.45/3210.3.56.45 – 10.3.56.4510.3.56.45
4710.3.56.46/3210.3.56.46 – 10.3.56.4610.3.56.46
4810.3.56.47/3210.3.56.47 – 10.3.56.4710.3.56.47
4910.3.56.48/3210.3.56.48 – 10.3.56.4810.3.56.48
5010.3.56.49/3210.3.56.49 – 10.3.56.4910.3.56.49
5110.3.56.50/3210.3.56.50 – 10.3.56.5010.3.56.50
5210.3.56.51/3210.3.56.51 – 10.3.56.5110.3.56.51
5310.3.56.52/3210.3.56.52 – 10.3.56.5210.3.56.52
5410.3.56.53/3210.3.56.53 – 10.3.56.5310.3.56.53
5510.3.56.54/3210.3.56.54 – 10.3.56.5410.3.56.54
5610.3.56.55/3210.3.56.55 – 10.3.56.5510.3.56.55
5710.3.56.56/3210.3.56.56 – 10.3.56.5610.3.56.56
5810.3.56.57/3210.3.56.57 – 10.3.56.5710.3.56.57
5910.3.56.58/3210.3.56.58 – 10.3.56.5810.3.56.58
6010.3.56.59/3210.3.56.59 – 10.3.56.5910.3.56.59
6110.3.56.60/3210.3.56.60 – 10.3.56.6010.3.56.60
6210.3.56.61/3210.3.56.61 – 10.3.56.6110.3.56.61
6310.3.56.62/3210.3.56.62 – 10.3.56.6210.3.56.62
6410.3.56.63/3210.3.56.63 – 10.3.56.6310.3.56.63
6510.3.56.64/3210.3.56.64 – 10.3.56.6410.3.56.64
6610.3.56.65/3210.3.56.65 – 10.3.56.6510.3.56.65
6710.3.56.66/3210.3.56.66 – 10.3.56.6610.3.56.66
6810.3.56.67/3210.3.56.67 – 10.3.56.6710.3.56.67
6910.3.56.68/3210.3.56.68 – 10.3.56.6810.3.56.68
7010.3.56.69/3210.3.56.69 – 10.3.56.6910.3.56.69
7110.3.56.70/3210.3.56.70 – 10.3.56.7010.3.56.70
7210.3.56.71/3210.3.56.71 – 10.3.56.7110.3.56.71
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7410.3.56.73/3210.3.56.73 – 10.3.56.7310.3.56.73
7510.3.56.74/3210.3.56.74 – 10.3.56.7410.3.56.74
7610.3.56.75/3210.3.56.75 – 10.3.56.7510.3.56.75
7710.3.56.76/3210.3.56.76 – 10.3.56.7610.3.56.76
7810.3.56.77/3210.3.56.77 – 10.3.56.7710.3.56.77
7910.3.56.78/3210.3.56.78 – 10.3.56.7810.3.56.78
8010.3.56.79/3210.3.56.79 – 10.3.56.7910.3.56.79
8110.3.56.80/3210.3.56.80 – 10.3.56.8010.3.56.80
8210.3.56.81/3210.3.56.81 – 10.3.56.8110.3.56.81
8310.3.56.82/3210.3.56.82 – 10.3.56.8210.3.56.82
8410.3.56.83/3210.3.56.83 – 10.3.56.8310.3.56.83
8510.3.56.84/3210.3.56.84 – 10.3.56.8410.3.56.84
8610.3.56.85/3210.3.56.85 – 10.3.56.8510.3.56.85
8710.3.56.86/3210.3.56.86 – 10.3.56.8610.3.56.86
8810.3.56.87/3210.3.56.87 – 10.3.56.8710.3.56.87
8910.3.56.88/3210.3.56.88 – 10.3.56.8810.3.56.88
9010.3.56.89/3210.3.56.89 – 10.3.56.8910.3.56.89
9110.3.56.90/3210.3.56.90 – 10.3.56.9010.3.56.90
9210.3.56.91/3210.3.56.91 – 10.3.56.9110.3.56.91
9310.3.56.92/3210.3.56.92 – 10.3.56.9210.3.56.92
9410.3.56.93/3210.3.56.93 – 10.3.56.9310.3.56.93
9510.3.56.94/3210.3.56.94 – 10.3.56.9410.3.56.94
9610.3.56.95/3210.3.56.95 – 10.3.56.9510.3.56.95
9710.3.56.96/3210.3.56.96 – 10.3.56.9610.3.56.96
9810.3.56.97/3210.3.56.97 – 10.3.56.9710.3.56.97
9910.3.56.98/3210.3.56.98 – 10.3.56.9810.3.56.98
10010.3.56.99/3210.3.56.99 – 10.3.56.9910.3.56.99
10110.3.56.100/3210.3.56.100 – 10.3.56.10010.3.56.100
10210.3.56.101/3210.3.56.101 – 10.3.56.10110.3.56.101
10310.3.56.102/3210.3.56.102 – 10.3.56.10210.3.56.102
10410.3.56.103/3210.3.56.103 – 10.3.56.10310.3.56.103
10510.3.56.104/3210.3.56.104 – 10.3.56.10410.3.56.104
10610.3.56.105/3210.3.56.105 – 10.3.56.10510.3.56.105
10710.3.56.106/3210.3.56.106 – 10.3.56.10610.3.56.106
10810.3.56.107/3210.3.56.107 – 10.3.56.10710.3.56.107
10910.3.56.108/3210.3.56.108 – 10.3.56.10810.3.56.108
11010.3.56.109/3210.3.56.109 – 10.3.56.10910.3.56.109
11110.3.56.110/3210.3.56.110 – 10.3.56.11010.3.56.110
11210.3.56.111/3210.3.56.111 – 10.3.56.11110.3.56.111
11310.3.56.112/3210.3.56.112 – 10.3.56.11210.3.56.112
11410.3.56.113/3210.3.56.113 – 10.3.56.11310.3.56.113
11510.3.56.114/3210.3.56.114 – 10.3.56.11410.3.56.114
11610.3.56.115/3210.3.56.115 – 10.3.56.11510.3.56.115
11710.3.56.116/3210.3.56.116 – 10.3.56.11610.3.56.116
11810.3.56.117/3210.3.56.117 – 10.3.56.11710.3.56.117
11910.3.56.118/3210.3.56.118 – 10.3.56.11810.3.56.118
12010.3.56.119/3210.3.56.119 – 10.3.56.11910.3.56.119
12110.3.56.120/3210.3.56.120 – 10.3.56.12010.3.56.120
12210.3.56.121/3210.3.56.121 – 10.3.56.12110.3.56.121
12310.3.56.122/3210.3.56.122 – 10.3.56.12210.3.56.122
12410.3.56.123/3210.3.56.123 – 10.3.56.12310.3.56.123
12510.3.56.124/3210.3.56.124 – 10.3.56.12410.3.56.124
12610.3.56.125/3210.3.56.125 – 10.3.56.12510.3.56.125
12710.3.56.126/3210.3.56.126 – 10.3.56.12610.3.56.126
12810.3.56.127/3210.3.56.127 – 10.3.56.12710.3.56.127
12910.3.56.128/3210.3.56.128 – 10.3.56.12810.3.56.128
13010.3.56.129/3210.3.56.129 – 10.3.56.12910.3.56.129
13110.3.56.130/3210.3.56.130 – 10.3.56.13010.3.56.130
13210.3.56.131/3210.3.56.131 – 10.3.56.13110.3.56.131
13310.3.56.132/3210.3.56.132 – 10.3.56.13210.3.56.132
13410.3.56.133/3210.3.56.133 – 10.3.56.13310.3.56.133
13510.3.56.134/3210.3.56.134 – 10.3.56.13410.3.56.134
13610.3.56.135/3210.3.56.135 – 10.3.56.13510.3.56.135
13710.3.56.136/3210.3.56.136 – 10.3.56.13610.3.56.136
13810.3.56.137/3210.3.56.137 – 10.3.56.13710.3.56.137
13910.3.56.138/3210.3.56.138 – 10.3.56.13810.3.56.138
14010.3.56.139/3210.3.56.139 – 10.3.56.13910.3.56.139
14110.3.56.140/3210.3.56.140 – 10.3.56.14010.3.56.140
14210.3.56.141/3210.3.56.141 – 10.3.56.14110.3.56.141
14310.3.56.142/3210.3.56.142 – 10.3.56.14210.3.56.142
14410.3.56.143/3210.3.56.143 – 10.3.56.14310.3.56.143
14510.3.56.144/3210.3.56.144 – 10.3.56.14410.3.56.144
14610.3.56.145/3210.3.56.145 – 10.3.56.14510.3.56.145
14710.3.56.146/3210.3.56.146 – 10.3.56.14610.3.56.146
14810.3.56.147/3210.3.56.147 – 10.3.56.14710.3.56.147
14910.3.56.148/3210.3.56.148 – 10.3.56.14810.3.56.148
15010.3.56.149/3210.3.56.149 – 10.3.56.14910.3.56.149
15110.3.56.150/3210.3.56.150 – 10.3.56.15010.3.56.150
15210.3.56.151/3210.3.56.151 – 10.3.56.15110.3.56.151
15310.3.56.152/3210.3.56.152 – 10.3.56.15210.3.56.152
15410.3.56.153/3210.3.56.153 – 10.3.56.15310.3.56.153
15510.3.56.154/3210.3.56.154 – 10.3.56.15410.3.56.154
15610.3.56.155/3210.3.56.155 – 10.3.56.15510.3.56.155
15710.3.56.156/3210.3.56.156 – 10.3.56.15610.3.56.156
15810.3.56.157/3210.3.56.157 – 10.3.56.15710.3.56.157
15910.3.56.158/3210.3.56.158 – 10.3.56.15810.3.56.158
16010.3.56.159/3210.3.56.159 – 10.3.56.15910.3.56.159
16110.3.56.160/3210.3.56.160 – 10.3.56.16010.3.56.160
16210.3.56.161/3210.3.56.161 – 10.3.56.16110.3.56.161
16310.3.56.162/3210.3.56.162 – 10.3.56.16210.3.56.162
16410.3.56.163/3210.3.56.163 – 10.3.56.16310.3.56.163
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16810.3.56.167/3210.3.56.167 – 10.3.56.16710.3.56.167
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17010.3.56.169/3210.3.56.169 – 10.3.56.16910.3.56.169
17110.3.56.170/3210.3.56.170 – 10.3.56.17010.3.56.170
17210.3.56.171/3210.3.56.171 – 10.3.56.17110.3.56.171
17310.3.56.172/3210.3.56.172 – 10.3.56.17210.3.56.172
17410.3.56.173/3210.3.56.173 – 10.3.56.17310.3.56.173
17510.3.56.174/3210.3.56.174 – 10.3.56.17410.3.56.174
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18210.3.56.181/3210.3.56.181 – 10.3.56.18110.3.56.181
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21910.3.56.218/3210.3.56.218 – 10.3.56.21810.3.56.218
22010.3.56.219/3210.3.56.219 – 10.3.56.21910.3.56.219
22110.3.56.220/3210.3.56.220 – 10.3.56.22010.3.56.220
22210.3.56.221/3210.3.56.221 – 10.3.56.22110.3.56.221
22310.3.56.222/3210.3.56.222 – 10.3.56.22210.3.56.222
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22910.3.56.228/3210.3.56.228 – 10.3.56.22810.3.56.228
23010.3.56.229/3210.3.56.229 – 10.3.56.22910.3.56.229
23110.3.56.230/3210.3.56.230 – 10.3.56.23010.3.56.230
23210.3.56.231/3210.3.56.231 – 10.3.56.23110.3.56.231
23310.3.56.232/3210.3.56.232 – 10.3.56.23210.3.56.232
23410.3.56.233/3210.3.56.233 – 10.3.56.23310.3.56.233
23510.3.56.234/3210.3.56.234 – 10.3.56.23410.3.56.234
23610.3.56.235/3210.3.56.235 – 10.3.56.23510.3.56.235
23710.3.56.236/3210.3.56.236 – 10.3.56.23610.3.56.236
23810.3.56.237/3210.3.56.237 – 10.3.56.23710.3.56.237
23910.3.56.238/3210.3.56.238 – 10.3.56.23810.3.56.238
24010.3.56.239/3210.3.56.239 – 10.3.56.23910.3.56.239
24110.3.56.240/3210.3.56.240 – 10.3.56.24010.3.56.240
24210.3.56.241/3210.3.56.241 – 10.3.56.24110.3.56.241
24310.3.56.242/3210.3.56.242 – 10.3.56.24210.3.56.242
24410.3.56.243/3210.3.56.243 – 10.3.56.24310.3.56.243
24510.3.56.244/3210.3.56.244 – 10.3.56.24410.3.56.244
24610.3.56.245/3210.3.56.245 – 10.3.56.24510.3.56.245
24710.3.56.246/3210.3.56.246 – 10.3.56.24610.3.56.246
24810.3.56.247/3210.3.56.247 – 10.3.56.24710.3.56.247
24910.3.56.248/3210.3.56.248 – 10.3.56.24810.3.56.248
25010.3.56.249/3210.3.56.249 – 10.3.56.24910.3.56.249
25110.3.56.250/3210.3.56.250 – 10.3.56.25010.3.56.250
25210.3.56.251/3210.3.56.251 – 10.3.56.25110.3.56.251
25310.3.56.252/3210.3.56.252 – 10.3.56.25210.3.56.252
25410.3.56.253/3210.3.56.253 – 10.3.56.25310.3.56.253
25510.3.56.254/3210.3.56.254 – 10.3.56.25410.3.56.254
25610.3.56.255/3210.3.56.255 – 10.3.56.25510.3.56.255
01 / table

IPv4 CIDR prefix table.

Click a prefix longer than your network to split it into subnets.

prefixsubnet maskaddresseshostsin your /24
/00.0.0.04,294,967,2964,294,967,294-
/1128.0.0.02,147,483,6482,147,483,646-
/2192.0.0.01,073,741,8241,073,741,822-
/3224.0.0.0536,870,912536,870,910-
/4240.0.0.0268,435,456268,435,454-
/5248.0.0.0134,217,728134,217,726-
/6252.0.0.067,108,86467,108,862-
/7254.0.0.033,554,43233,554,430-
/8255.0.0.016,777,21616,777,214-
/9255.128.0.08,388,6088,388,606-
/10255.192.0.04,194,3044,194,302-
/11255.224.0.02,097,1522,097,150-
/12255.240.0.01,048,5761,048,574-
/13255.248.0.0524,288524,286-
/14255.252.0.0262,144262,142-
/15255.254.0.0131,072131,070-
/16255.255.0.065,53665,534-
/17255.255.128.032,76832,766-
/18255.255.192.016,38416,382-
/19255.255.224.08,1928,190-
/20255.255.240.04,0964,094-
/21255.255.248.02,0482,046-
/22255.255.252.01,0241,022-
/23255.255.254.0512510-
/24255.255.255.02562541
/25255.255.255.1281281262 split →
/26255.255.255.19264624 split →
/27255.255.255.22432308 split →
/28255.255.255.240161416 split →
/29255.255.255.2488632 split →
/30255.255.255.2524264 split →
/31255.255.255.25422128 split →
/32255.255.255.25511256 split →
02 / faq

About this calculator.

How do I use this subnet calculator?

▼

Type an IP address followed by a prefix, like 192.168.1.10/24, or by a subnet mask, like 192.168.1.10 255.255.255.0. Without a prefix it uses /24. Click a row in the table to split the network into smaller subnets.

Why are usable hosts always 2 fewer?

▼

The first address in a subnet is the network address and the last is the broadcast address, so neither can go to a device. The exceptions are /31 (point-to-point links, RFC 3021) and /32 (a single address), which use every address.

Can I use it from a terminal?

▼

Yes. curl 'ipku.in/en/tools/ipv4-subnet-calculator?q=192.168.1.10/24' returns the result as plain text.

Learn how to work it out →