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
private IP (RFC 1918)10.13.144.0/20
network10.13.144.0/20
broadcast10.13.159.255
first host10.13.144.1
last host10.13.159.254
subnet mask255.255.240.0
wildcard0.0.15.255
addresses4,096
usable hosts4,094
classA
ipcalc 10.13.144.0/20
address00001010.00001101.10010000.00000000
subnet mask11111111.11111111.11110000.00000000
network00001010.00001101.10010000.00000000
broadcast00001010.00001101.10011111.11111111
green = network part, grey = host part
hex0x0a0d9000
decimal168660992
reverse dns0.144.13.10.in-addr.arpa
ipv4-mapped::ffff:a0d:9000

/20 split into /32 · 4,096 subnets

close ×
#networkhost rangebroadcast
110.13.144.0/3210.13.144.0 – 10.13.144.010.13.144.0
210.13.144.1/3210.13.144.1 – 10.13.144.110.13.144.1
310.13.144.2/3210.13.144.2 – 10.13.144.210.13.144.2
410.13.144.3/3210.13.144.3 – 10.13.144.310.13.144.3
510.13.144.4/3210.13.144.4 – 10.13.144.410.13.144.4
610.13.144.5/3210.13.144.5 – 10.13.144.510.13.144.5
710.13.144.6/3210.13.144.6 – 10.13.144.610.13.144.6
810.13.144.7/3210.13.144.7 – 10.13.144.710.13.144.7
910.13.144.8/3210.13.144.8 – 10.13.144.810.13.144.8
1010.13.144.9/3210.13.144.9 – 10.13.144.910.13.144.9
1110.13.144.10/3210.13.144.10 – 10.13.144.1010.13.144.10
1210.13.144.11/3210.13.144.11 – 10.13.144.1110.13.144.11
1310.13.144.12/3210.13.144.12 – 10.13.144.1210.13.144.12
1410.13.144.13/3210.13.144.13 – 10.13.144.1310.13.144.13
1510.13.144.14/3210.13.144.14 – 10.13.144.1410.13.144.14
1610.13.144.15/3210.13.144.15 – 10.13.144.1510.13.144.15
1710.13.144.16/3210.13.144.16 – 10.13.144.1610.13.144.16
1810.13.144.17/3210.13.144.17 – 10.13.144.1710.13.144.17
1910.13.144.18/3210.13.144.18 – 10.13.144.1810.13.144.18
2010.13.144.19/3210.13.144.19 – 10.13.144.1910.13.144.19
2110.13.144.20/3210.13.144.20 – 10.13.144.2010.13.144.20
2210.13.144.21/3210.13.144.21 – 10.13.144.2110.13.144.21
2310.13.144.22/3210.13.144.22 – 10.13.144.2210.13.144.22
2410.13.144.23/3210.13.144.23 – 10.13.144.2310.13.144.23
2510.13.144.24/3210.13.144.24 – 10.13.144.2410.13.144.24
2610.13.144.25/3210.13.144.25 – 10.13.144.2510.13.144.25
2710.13.144.26/3210.13.144.26 – 10.13.144.2610.13.144.26
2810.13.144.27/3210.13.144.27 – 10.13.144.2710.13.144.27
2910.13.144.28/3210.13.144.28 – 10.13.144.2810.13.144.28
3010.13.144.29/3210.13.144.29 – 10.13.144.2910.13.144.29
3110.13.144.30/3210.13.144.30 – 10.13.144.3010.13.144.30
3210.13.144.31/3210.13.144.31 – 10.13.144.3110.13.144.31
3310.13.144.32/3210.13.144.32 – 10.13.144.3210.13.144.32
3410.13.144.33/3210.13.144.33 – 10.13.144.3310.13.144.33
3510.13.144.34/3210.13.144.34 – 10.13.144.3410.13.144.34
3610.13.144.35/3210.13.144.35 – 10.13.144.3510.13.144.35
3710.13.144.36/3210.13.144.36 – 10.13.144.3610.13.144.36
3810.13.144.37/3210.13.144.37 – 10.13.144.3710.13.144.37
3910.13.144.38/3210.13.144.38 – 10.13.144.3810.13.144.38
4010.13.144.39/3210.13.144.39 – 10.13.144.3910.13.144.39
4110.13.144.40/3210.13.144.40 – 10.13.144.4010.13.144.40
4210.13.144.41/3210.13.144.41 – 10.13.144.4110.13.144.41
4310.13.144.42/3210.13.144.42 – 10.13.144.4210.13.144.42
4410.13.144.43/3210.13.144.43 – 10.13.144.4310.13.144.43
4510.13.144.44/3210.13.144.44 – 10.13.144.4410.13.144.44
4610.13.144.45/3210.13.144.45 – 10.13.144.4510.13.144.45
4710.13.144.46/3210.13.144.46 – 10.13.144.4610.13.144.46
4810.13.144.47/3210.13.144.47 – 10.13.144.4710.13.144.47
4910.13.144.48/3210.13.144.48 – 10.13.144.4810.13.144.48
5010.13.144.49/3210.13.144.49 – 10.13.144.4910.13.144.49
5110.13.144.50/3210.13.144.50 – 10.13.144.5010.13.144.50
5210.13.144.51/3210.13.144.51 – 10.13.144.5110.13.144.51
5310.13.144.52/3210.13.144.52 – 10.13.144.5210.13.144.52
5410.13.144.53/3210.13.144.53 – 10.13.144.5310.13.144.53
5510.13.144.54/3210.13.144.54 – 10.13.144.5410.13.144.54
5610.13.144.55/3210.13.144.55 – 10.13.144.5510.13.144.55
5710.13.144.56/3210.13.144.56 – 10.13.144.5610.13.144.56
5810.13.144.57/3210.13.144.57 – 10.13.144.5710.13.144.57
5910.13.144.58/3210.13.144.58 – 10.13.144.5810.13.144.58
6010.13.144.59/3210.13.144.59 – 10.13.144.5910.13.144.59
6110.13.144.60/3210.13.144.60 – 10.13.144.6010.13.144.60
6210.13.144.61/3210.13.144.61 – 10.13.144.6110.13.144.61
6310.13.144.62/3210.13.144.62 – 10.13.144.6210.13.144.62
6410.13.144.63/3210.13.144.63 – 10.13.144.6310.13.144.63
6510.13.144.64/3210.13.144.64 – 10.13.144.6410.13.144.64
6610.13.144.65/3210.13.144.65 – 10.13.144.6510.13.144.65
6710.13.144.66/3210.13.144.66 – 10.13.144.6610.13.144.66
6810.13.144.67/3210.13.144.67 – 10.13.144.6710.13.144.67
6910.13.144.68/3210.13.144.68 – 10.13.144.6810.13.144.68
7010.13.144.69/3210.13.144.69 – 10.13.144.6910.13.144.69
7110.13.144.70/3210.13.144.70 – 10.13.144.7010.13.144.70
7210.13.144.71/3210.13.144.71 – 10.13.144.7110.13.144.71
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7410.13.144.73/3210.13.144.73 – 10.13.144.7310.13.144.73
7510.13.144.74/3210.13.144.74 – 10.13.144.7410.13.144.74
7610.13.144.75/3210.13.144.75 – 10.13.144.7510.13.144.75
7710.13.144.76/3210.13.144.76 – 10.13.144.7610.13.144.76
7810.13.144.77/3210.13.144.77 – 10.13.144.7710.13.144.77
7910.13.144.78/3210.13.144.78 – 10.13.144.7810.13.144.78
8010.13.144.79/3210.13.144.79 – 10.13.144.7910.13.144.79
8110.13.144.80/3210.13.144.80 – 10.13.144.8010.13.144.80
8210.13.144.81/3210.13.144.81 – 10.13.144.8110.13.144.81
8310.13.144.82/3210.13.144.82 – 10.13.144.8210.13.144.82
8410.13.144.83/3210.13.144.83 – 10.13.144.8310.13.144.83
8510.13.144.84/3210.13.144.84 – 10.13.144.8410.13.144.84
8610.13.144.85/3210.13.144.85 – 10.13.144.8510.13.144.85
8710.13.144.86/3210.13.144.86 – 10.13.144.8610.13.144.86
8810.13.144.87/3210.13.144.87 – 10.13.144.8710.13.144.87
8910.13.144.88/3210.13.144.88 – 10.13.144.8810.13.144.88
9010.13.144.89/3210.13.144.89 – 10.13.144.8910.13.144.89
9110.13.144.90/3210.13.144.90 – 10.13.144.9010.13.144.90
9210.13.144.91/3210.13.144.91 – 10.13.144.9110.13.144.91
9310.13.144.92/3210.13.144.92 – 10.13.144.9210.13.144.92
9410.13.144.93/3210.13.144.93 – 10.13.144.9310.13.144.93
9510.13.144.94/3210.13.144.94 – 10.13.144.9410.13.144.94
9610.13.144.95/3210.13.144.95 – 10.13.144.9510.13.144.95
9710.13.144.96/3210.13.144.96 – 10.13.144.9610.13.144.96
9810.13.144.97/3210.13.144.97 – 10.13.144.9710.13.144.97
9910.13.144.98/3210.13.144.98 – 10.13.144.9810.13.144.98
10010.13.144.99/3210.13.144.99 – 10.13.144.9910.13.144.99
10110.13.144.100/3210.13.144.100 – 10.13.144.10010.13.144.100
10210.13.144.101/3210.13.144.101 – 10.13.144.10110.13.144.101
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10410.13.144.103/3210.13.144.103 – 10.13.144.10310.13.144.103
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10710.13.144.106/3210.13.144.106 – 10.13.144.10610.13.144.106
10810.13.144.107/3210.13.144.107 – 10.13.144.10710.13.144.107
10910.13.144.108/3210.13.144.108 – 10.13.144.10810.13.144.108
11010.13.144.109/3210.13.144.109 – 10.13.144.10910.13.144.109
11110.13.144.110/3210.13.144.110 – 10.13.144.11010.13.144.110
11210.13.144.111/3210.13.144.111 – 10.13.144.11110.13.144.111
11310.13.144.112/3210.13.144.112 – 10.13.144.11210.13.144.112
11410.13.144.113/3210.13.144.113 – 10.13.144.11310.13.144.113
11510.13.144.114/3210.13.144.114 – 10.13.144.11410.13.144.114
11610.13.144.115/3210.13.144.115 – 10.13.144.11510.13.144.115
11710.13.144.116/3210.13.144.116 – 10.13.144.11610.13.144.116
11810.13.144.117/3210.13.144.117 – 10.13.144.11710.13.144.117
11910.13.144.118/3210.13.144.118 – 10.13.144.11810.13.144.118
12010.13.144.119/3210.13.144.119 – 10.13.144.11910.13.144.119
12110.13.144.120/3210.13.144.120 – 10.13.144.12010.13.144.120
12210.13.144.121/3210.13.144.121 – 10.13.144.12110.13.144.121
12310.13.144.122/3210.13.144.122 – 10.13.144.12210.13.144.122
12410.13.144.123/3210.13.144.123 – 10.13.144.12310.13.144.123
12510.13.144.124/3210.13.144.124 – 10.13.144.12410.13.144.124
12610.13.144.125/3210.13.144.125 – 10.13.144.12510.13.144.125
12710.13.144.126/3210.13.144.126 – 10.13.144.12610.13.144.126
12810.13.144.127/3210.13.144.127 – 10.13.144.12710.13.144.127
12910.13.144.128/3210.13.144.128 – 10.13.144.12810.13.144.128
13010.13.144.129/3210.13.144.129 – 10.13.144.12910.13.144.129
13110.13.144.130/3210.13.144.130 – 10.13.144.13010.13.144.130
13210.13.144.131/3210.13.144.131 – 10.13.144.13110.13.144.131
13310.13.144.132/3210.13.144.132 – 10.13.144.13210.13.144.132
13410.13.144.133/3210.13.144.133 – 10.13.144.13310.13.144.133
13510.13.144.134/3210.13.144.134 – 10.13.144.13410.13.144.134
13610.13.144.135/3210.13.144.135 – 10.13.144.13510.13.144.135
13710.13.144.136/3210.13.144.136 – 10.13.144.13610.13.144.136
13810.13.144.137/3210.13.144.137 – 10.13.144.13710.13.144.137
13910.13.144.138/3210.13.144.138 – 10.13.144.13810.13.144.138
14010.13.144.139/3210.13.144.139 – 10.13.144.13910.13.144.139
14110.13.144.140/3210.13.144.140 – 10.13.144.14010.13.144.140
14210.13.144.141/3210.13.144.141 – 10.13.144.14110.13.144.141
14310.13.144.142/3210.13.144.142 – 10.13.144.14210.13.144.142
14410.13.144.143/3210.13.144.143 – 10.13.144.14310.13.144.143
14510.13.144.144/3210.13.144.144 – 10.13.144.14410.13.144.144
14610.13.144.145/3210.13.144.145 – 10.13.144.14510.13.144.145
14710.13.144.146/3210.13.144.146 – 10.13.144.14610.13.144.146
14810.13.144.147/3210.13.144.147 – 10.13.144.14710.13.144.147
14910.13.144.148/3210.13.144.148 – 10.13.144.14810.13.144.148
15010.13.144.149/3210.13.144.149 – 10.13.144.14910.13.144.149
15110.13.144.150/3210.13.144.150 – 10.13.144.15010.13.144.150
15210.13.144.151/3210.13.144.151 – 10.13.144.15110.13.144.151
15310.13.144.152/3210.13.144.152 – 10.13.144.15210.13.144.152
15410.13.144.153/3210.13.144.153 – 10.13.144.15310.13.144.153
15510.13.144.154/3210.13.144.154 – 10.13.144.15410.13.144.154
15610.13.144.155/3210.13.144.155 – 10.13.144.15510.13.144.155
15710.13.144.156/3210.13.144.156 – 10.13.144.15610.13.144.156
15810.13.144.157/3210.13.144.157 – 10.13.144.15710.13.144.157
15910.13.144.158/3210.13.144.158 – 10.13.144.15810.13.144.158
16010.13.144.159/3210.13.144.159 – 10.13.144.15910.13.144.159
16110.13.144.160/3210.13.144.160 – 10.13.144.16010.13.144.160
16210.13.144.161/3210.13.144.161 – 10.13.144.16110.13.144.161
16310.13.144.162/3210.13.144.162 – 10.13.144.16210.13.144.162
16410.13.144.163/3210.13.144.163 – 10.13.144.16310.13.144.163
16510.13.144.164/3210.13.144.164 – 10.13.144.16410.13.144.164
16610.13.144.165/3210.13.144.165 – 10.13.144.16510.13.144.165
16710.13.144.166/3210.13.144.166 – 10.13.144.16610.13.144.166
16810.13.144.167/3210.13.144.167 – 10.13.144.16710.13.144.167
16910.13.144.168/3210.13.144.168 – 10.13.144.16810.13.144.168
17010.13.144.169/3210.13.144.169 – 10.13.144.16910.13.144.169
17110.13.144.170/3210.13.144.170 – 10.13.144.17010.13.144.170
17210.13.144.171/3210.13.144.171 – 10.13.144.17110.13.144.171
17310.13.144.172/3210.13.144.172 – 10.13.144.17210.13.144.172
17410.13.144.173/3210.13.144.173 – 10.13.144.17310.13.144.173
17510.13.144.174/3210.13.144.174 – 10.13.144.17410.13.144.174
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17710.13.144.176/3210.13.144.176 – 10.13.144.17610.13.144.176
17810.13.144.177/3210.13.144.177 – 10.13.144.17710.13.144.177
17910.13.144.178/3210.13.144.178 – 10.13.144.17810.13.144.178
18010.13.144.179/3210.13.144.179 – 10.13.144.17910.13.144.179
18110.13.144.180/3210.13.144.180 – 10.13.144.18010.13.144.180
18210.13.144.181/3210.13.144.181 – 10.13.144.18110.13.144.181
18310.13.144.182/3210.13.144.182 – 10.13.144.18210.13.144.182
18410.13.144.183/3210.13.144.183 – 10.13.144.18310.13.144.183
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19210.13.144.191/3210.13.144.191 – 10.13.144.19110.13.144.191
19310.13.144.192/3210.13.144.192 – 10.13.144.19210.13.144.192
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20210.13.144.201/3210.13.144.201 – 10.13.144.20110.13.144.201
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21910.13.144.218/3210.13.144.218 – 10.13.144.21810.13.144.218
22010.13.144.219/3210.13.144.219 – 10.13.144.21910.13.144.219
22110.13.144.220/3210.13.144.220 – 10.13.144.22010.13.144.220
22210.13.144.221/3210.13.144.221 – 10.13.144.22110.13.144.221
22310.13.144.222/3210.13.144.222 – 10.13.144.22210.13.144.222
22410.13.144.223/3210.13.144.223 – 10.13.144.22310.13.144.223
22510.13.144.224/3210.13.144.224 – 10.13.144.22410.13.144.224
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23010.13.144.229/3210.13.144.229 – 10.13.144.22910.13.144.229
23110.13.144.230/3210.13.144.230 – 10.13.144.23010.13.144.230
23210.13.144.231/3210.13.144.231 – 10.13.144.23110.13.144.231
23310.13.144.232/3210.13.144.232 – 10.13.144.23210.13.144.232
23410.13.144.233/3210.13.144.233 – 10.13.144.23310.13.144.233
23510.13.144.234/3210.13.144.234 – 10.13.144.23410.13.144.234
23610.13.144.235/3210.13.144.235 – 10.13.144.23510.13.144.235
23710.13.144.236/3210.13.144.236 – 10.13.144.23610.13.144.236
23810.13.144.237/3210.13.144.237 – 10.13.144.23710.13.144.237
23910.13.144.238/3210.13.144.238 – 10.13.144.23810.13.144.238
24010.13.144.239/3210.13.144.239 – 10.13.144.23910.13.144.239
24110.13.144.240/3210.13.144.240 – 10.13.144.24010.13.144.240
24210.13.144.241/3210.13.144.241 – 10.13.144.24110.13.144.241
24310.13.144.242/3210.13.144.242 – 10.13.144.24210.13.144.242
24410.13.144.243/3210.13.144.243 – 10.13.144.24310.13.144.243
24510.13.144.244/3210.13.144.244 – 10.13.144.24410.13.144.244
24610.13.144.245/3210.13.144.245 – 10.13.144.24510.13.144.245
24710.13.144.246/3210.13.144.246 – 10.13.144.24610.13.144.246
24810.13.144.247/3210.13.144.247 – 10.13.144.24710.13.144.247
24910.13.144.248/3210.13.144.248 – 10.13.144.24810.13.144.248
25010.13.144.249/3210.13.144.249 – 10.13.144.24910.13.144.249
25110.13.144.250/3210.13.144.250 – 10.13.144.25010.13.144.250
25210.13.144.251/3210.13.144.251 – 10.13.144.25110.13.144.251
25310.13.144.252/3210.13.144.252 – 10.13.144.25210.13.144.252
25410.13.144.253/3210.13.144.253 – 10.13.144.25310.13.144.253
25510.13.144.254/3210.13.144.254 – 10.13.144.25410.13.144.254
25610.13.144.255/3210.13.144.255 – 10.13.144.25510.13.144.255

showing 256 of 4,096

01 / table

IPv4 CIDR prefix table.

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

prefixsubnet maskaddresseshostsin your /20
/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-
/20255.255.240.04,0964,0941
/21255.255.248.02,0482,0462 split →
/22255.255.252.01,0241,0224 split →
/23255.255.254.05125108 split →
/24255.255.255.025625416 split →
/25255.255.255.12812812632 split →
/26255.255.255.192646264 split →
/27255.255.255.2243230128 split →
/28255.255.255.2401614256 split →
/29255.255.255.24886512 split →
/30255.255.255.252421,024 split →
/31255.255.255.254222,048 split →
/32255.255.255.255114,096 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 →