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)10.3.72.0/21
network10.3.72.0/21
broadcast10.3.79.255
first host10.3.72.1
last host10.3.79.254
subnet mask255.255.248.0
wildcard0.0.7.255
addresses2,048
usable hosts2,046
classA
ipcalc 10.3.72.0/21
address00001010.00000011.01001000.00000000
subnet mask11111111.11111111.11111000.00000000
network00001010.00000011.01001000.00000000
broadcast00001010.00000011.01001111.11111111
green = network part, grey = host part
hex0x0a034800
decimal167987200
reverse dns0.72.3.10.in-addr.arpa
ipv4-mapped::ffff:a03:4800

/21 split into /32 · 2,048 subnets

close ×
#networkhost rangebroadcast
110.3.72.0/3210.3.72.0 – 10.3.72.010.3.72.0
210.3.72.1/3210.3.72.1 – 10.3.72.110.3.72.1
310.3.72.2/3210.3.72.2 – 10.3.72.210.3.72.2
410.3.72.3/3210.3.72.3 – 10.3.72.310.3.72.3
510.3.72.4/3210.3.72.4 – 10.3.72.410.3.72.4
610.3.72.5/3210.3.72.5 – 10.3.72.510.3.72.5
710.3.72.6/3210.3.72.6 – 10.3.72.610.3.72.6
810.3.72.7/3210.3.72.7 – 10.3.72.710.3.72.7
910.3.72.8/3210.3.72.8 – 10.3.72.810.3.72.8
1010.3.72.9/3210.3.72.9 – 10.3.72.910.3.72.9
1110.3.72.10/3210.3.72.10 – 10.3.72.1010.3.72.10
1210.3.72.11/3210.3.72.11 – 10.3.72.1110.3.72.11
1310.3.72.12/3210.3.72.12 – 10.3.72.1210.3.72.12
1410.3.72.13/3210.3.72.13 – 10.3.72.1310.3.72.13
1510.3.72.14/3210.3.72.14 – 10.3.72.1410.3.72.14
1610.3.72.15/3210.3.72.15 – 10.3.72.1510.3.72.15
1710.3.72.16/3210.3.72.16 – 10.3.72.1610.3.72.16
1810.3.72.17/3210.3.72.17 – 10.3.72.1710.3.72.17
1910.3.72.18/3210.3.72.18 – 10.3.72.1810.3.72.18
2010.3.72.19/3210.3.72.19 – 10.3.72.1910.3.72.19
2110.3.72.20/3210.3.72.20 – 10.3.72.2010.3.72.20
2210.3.72.21/3210.3.72.21 – 10.3.72.2110.3.72.21
2310.3.72.22/3210.3.72.22 – 10.3.72.2210.3.72.22
2410.3.72.23/3210.3.72.23 – 10.3.72.2310.3.72.23
2510.3.72.24/3210.3.72.24 – 10.3.72.2410.3.72.24
2610.3.72.25/3210.3.72.25 – 10.3.72.2510.3.72.25
2710.3.72.26/3210.3.72.26 – 10.3.72.2610.3.72.26
2810.3.72.27/3210.3.72.27 – 10.3.72.2710.3.72.27
2910.3.72.28/3210.3.72.28 – 10.3.72.2810.3.72.28
3010.3.72.29/3210.3.72.29 – 10.3.72.2910.3.72.29
3110.3.72.30/3210.3.72.30 – 10.3.72.3010.3.72.30
3210.3.72.31/3210.3.72.31 – 10.3.72.3110.3.72.31
3310.3.72.32/3210.3.72.32 – 10.3.72.3210.3.72.32
3410.3.72.33/3210.3.72.33 – 10.3.72.3310.3.72.33
3510.3.72.34/3210.3.72.34 – 10.3.72.3410.3.72.34
3610.3.72.35/3210.3.72.35 – 10.3.72.3510.3.72.35
3710.3.72.36/3210.3.72.36 – 10.3.72.3610.3.72.36
3810.3.72.37/3210.3.72.37 – 10.3.72.3710.3.72.37
3910.3.72.38/3210.3.72.38 – 10.3.72.3810.3.72.38
4010.3.72.39/3210.3.72.39 – 10.3.72.3910.3.72.39
4110.3.72.40/3210.3.72.40 – 10.3.72.4010.3.72.40
4210.3.72.41/3210.3.72.41 – 10.3.72.4110.3.72.41
4310.3.72.42/3210.3.72.42 – 10.3.72.4210.3.72.42
4410.3.72.43/3210.3.72.43 – 10.3.72.4310.3.72.43
4510.3.72.44/3210.3.72.44 – 10.3.72.4410.3.72.44
4610.3.72.45/3210.3.72.45 – 10.3.72.4510.3.72.45
4710.3.72.46/3210.3.72.46 – 10.3.72.4610.3.72.46
4810.3.72.47/3210.3.72.47 – 10.3.72.4710.3.72.47
4910.3.72.48/3210.3.72.48 – 10.3.72.4810.3.72.48
5010.3.72.49/3210.3.72.49 – 10.3.72.4910.3.72.49
5110.3.72.50/3210.3.72.50 – 10.3.72.5010.3.72.50
5210.3.72.51/3210.3.72.51 – 10.3.72.5110.3.72.51
5310.3.72.52/3210.3.72.52 – 10.3.72.5210.3.72.52
5410.3.72.53/3210.3.72.53 – 10.3.72.5310.3.72.53
5510.3.72.54/3210.3.72.54 – 10.3.72.5410.3.72.54
5610.3.72.55/3210.3.72.55 – 10.3.72.5510.3.72.55
5710.3.72.56/3210.3.72.56 – 10.3.72.5610.3.72.56
5810.3.72.57/3210.3.72.57 – 10.3.72.5710.3.72.57
5910.3.72.58/3210.3.72.58 – 10.3.72.5810.3.72.58
6010.3.72.59/3210.3.72.59 – 10.3.72.5910.3.72.59
6110.3.72.60/3210.3.72.60 – 10.3.72.6010.3.72.60
6210.3.72.61/3210.3.72.61 – 10.3.72.6110.3.72.61
6310.3.72.62/3210.3.72.62 – 10.3.72.6210.3.72.62
6410.3.72.63/3210.3.72.63 – 10.3.72.6310.3.72.63
6510.3.72.64/3210.3.72.64 – 10.3.72.6410.3.72.64
6610.3.72.65/3210.3.72.65 – 10.3.72.6510.3.72.65
6710.3.72.66/3210.3.72.66 – 10.3.72.6610.3.72.66
6810.3.72.67/3210.3.72.67 – 10.3.72.6710.3.72.67
6910.3.72.68/3210.3.72.68 – 10.3.72.6810.3.72.68
7010.3.72.69/3210.3.72.69 – 10.3.72.6910.3.72.69
7110.3.72.70/3210.3.72.70 – 10.3.72.7010.3.72.70
7210.3.72.71/3210.3.72.71 – 10.3.72.7110.3.72.71
7310.3.72.72/3210.3.72.72 – 10.3.72.7210.3.72.72
7410.3.72.73/3210.3.72.73 – 10.3.72.7310.3.72.73
7510.3.72.74/3210.3.72.74 – 10.3.72.7410.3.72.74
7610.3.72.75/3210.3.72.75 – 10.3.72.7510.3.72.75
7710.3.72.76/3210.3.72.76 – 10.3.72.7610.3.72.76
7810.3.72.77/3210.3.72.77 – 10.3.72.7710.3.72.77
7910.3.72.78/3210.3.72.78 – 10.3.72.7810.3.72.78
8010.3.72.79/3210.3.72.79 – 10.3.72.7910.3.72.79
8110.3.72.80/3210.3.72.80 – 10.3.72.8010.3.72.80
8210.3.72.81/3210.3.72.81 – 10.3.72.8110.3.72.81
8310.3.72.82/3210.3.72.82 – 10.3.72.8210.3.72.82
8410.3.72.83/3210.3.72.83 – 10.3.72.8310.3.72.83
8510.3.72.84/3210.3.72.84 – 10.3.72.8410.3.72.84
8610.3.72.85/3210.3.72.85 – 10.3.72.8510.3.72.85
8710.3.72.86/3210.3.72.86 – 10.3.72.8610.3.72.86
8810.3.72.87/3210.3.72.87 – 10.3.72.8710.3.72.87
8910.3.72.88/3210.3.72.88 – 10.3.72.8810.3.72.88
9010.3.72.89/3210.3.72.89 – 10.3.72.8910.3.72.89
9110.3.72.90/3210.3.72.90 – 10.3.72.9010.3.72.90
9210.3.72.91/3210.3.72.91 – 10.3.72.9110.3.72.91
9310.3.72.92/3210.3.72.92 – 10.3.72.9210.3.72.92
9410.3.72.93/3210.3.72.93 – 10.3.72.9310.3.72.93
9510.3.72.94/3210.3.72.94 – 10.3.72.9410.3.72.94
9610.3.72.95/3210.3.72.95 – 10.3.72.9510.3.72.95
9710.3.72.96/3210.3.72.96 – 10.3.72.9610.3.72.96
9810.3.72.97/3210.3.72.97 – 10.3.72.9710.3.72.97
9910.3.72.98/3210.3.72.98 – 10.3.72.9810.3.72.98
10010.3.72.99/3210.3.72.99 – 10.3.72.9910.3.72.99
10110.3.72.100/3210.3.72.100 – 10.3.72.10010.3.72.100
10210.3.72.101/3210.3.72.101 – 10.3.72.10110.3.72.101
10310.3.72.102/3210.3.72.102 – 10.3.72.10210.3.72.102
10410.3.72.103/3210.3.72.103 – 10.3.72.10310.3.72.103
10510.3.72.104/3210.3.72.104 – 10.3.72.10410.3.72.104
10610.3.72.105/3210.3.72.105 – 10.3.72.10510.3.72.105
10710.3.72.106/3210.3.72.106 – 10.3.72.10610.3.72.106
10810.3.72.107/3210.3.72.107 – 10.3.72.10710.3.72.107
10910.3.72.108/3210.3.72.108 – 10.3.72.10810.3.72.108
11010.3.72.109/3210.3.72.109 – 10.3.72.10910.3.72.109
11110.3.72.110/3210.3.72.110 – 10.3.72.11010.3.72.110
11210.3.72.111/3210.3.72.111 – 10.3.72.11110.3.72.111
11310.3.72.112/3210.3.72.112 – 10.3.72.11210.3.72.112
11410.3.72.113/3210.3.72.113 – 10.3.72.11310.3.72.113
11510.3.72.114/3210.3.72.114 – 10.3.72.11410.3.72.114
11610.3.72.115/3210.3.72.115 – 10.3.72.11510.3.72.115
11710.3.72.116/3210.3.72.116 – 10.3.72.11610.3.72.116
11810.3.72.117/3210.3.72.117 – 10.3.72.11710.3.72.117
11910.3.72.118/3210.3.72.118 – 10.3.72.11810.3.72.118
12010.3.72.119/3210.3.72.119 – 10.3.72.11910.3.72.119
12110.3.72.120/3210.3.72.120 – 10.3.72.12010.3.72.120
12210.3.72.121/3210.3.72.121 – 10.3.72.12110.3.72.121
12310.3.72.122/3210.3.72.122 – 10.3.72.12210.3.72.122
12410.3.72.123/3210.3.72.123 – 10.3.72.12310.3.72.123
12510.3.72.124/3210.3.72.124 – 10.3.72.12410.3.72.124
12610.3.72.125/3210.3.72.125 – 10.3.72.12510.3.72.125
12710.3.72.126/3210.3.72.126 – 10.3.72.12610.3.72.126
12810.3.72.127/3210.3.72.127 – 10.3.72.12710.3.72.127
12910.3.72.128/3210.3.72.128 – 10.3.72.12810.3.72.128
13010.3.72.129/3210.3.72.129 – 10.3.72.12910.3.72.129
13110.3.72.130/3210.3.72.130 – 10.3.72.13010.3.72.130
13210.3.72.131/3210.3.72.131 – 10.3.72.13110.3.72.131
13310.3.72.132/3210.3.72.132 – 10.3.72.13210.3.72.132
13410.3.72.133/3210.3.72.133 – 10.3.72.13310.3.72.133
13510.3.72.134/3210.3.72.134 – 10.3.72.13410.3.72.134
13610.3.72.135/3210.3.72.135 – 10.3.72.13510.3.72.135
13710.3.72.136/3210.3.72.136 – 10.3.72.13610.3.72.136
13810.3.72.137/3210.3.72.137 – 10.3.72.13710.3.72.137
13910.3.72.138/3210.3.72.138 – 10.3.72.13810.3.72.138
14010.3.72.139/3210.3.72.139 – 10.3.72.13910.3.72.139
14110.3.72.140/3210.3.72.140 – 10.3.72.14010.3.72.140
14210.3.72.141/3210.3.72.141 – 10.3.72.14110.3.72.141
14310.3.72.142/3210.3.72.142 – 10.3.72.14210.3.72.142
14410.3.72.143/3210.3.72.143 – 10.3.72.14310.3.72.143
14510.3.72.144/3210.3.72.144 – 10.3.72.14410.3.72.144
14610.3.72.145/3210.3.72.145 – 10.3.72.14510.3.72.145
14710.3.72.146/3210.3.72.146 – 10.3.72.14610.3.72.146
14810.3.72.147/3210.3.72.147 – 10.3.72.14710.3.72.147
14910.3.72.148/3210.3.72.148 – 10.3.72.14810.3.72.148
15010.3.72.149/3210.3.72.149 – 10.3.72.14910.3.72.149
15110.3.72.150/3210.3.72.150 – 10.3.72.15010.3.72.150
15210.3.72.151/3210.3.72.151 – 10.3.72.15110.3.72.151
15310.3.72.152/3210.3.72.152 – 10.3.72.15210.3.72.152
15410.3.72.153/3210.3.72.153 – 10.3.72.15310.3.72.153
15510.3.72.154/3210.3.72.154 – 10.3.72.15410.3.72.154
15610.3.72.155/3210.3.72.155 – 10.3.72.15510.3.72.155
15710.3.72.156/3210.3.72.156 – 10.3.72.15610.3.72.156
15810.3.72.157/3210.3.72.157 – 10.3.72.15710.3.72.157
15910.3.72.158/3210.3.72.158 – 10.3.72.15810.3.72.158
16010.3.72.159/3210.3.72.159 – 10.3.72.15910.3.72.159
16110.3.72.160/3210.3.72.160 – 10.3.72.16010.3.72.160
16210.3.72.161/3210.3.72.161 – 10.3.72.16110.3.72.161
16310.3.72.162/3210.3.72.162 – 10.3.72.16210.3.72.162
16410.3.72.163/3210.3.72.163 – 10.3.72.16310.3.72.163
16510.3.72.164/3210.3.72.164 – 10.3.72.16410.3.72.164
16610.3.72.165/3210.3.72.165 – 10.3.72.16510.3.72.165
16710.3.72.166/3210.3.72.166 – 10.3.72.16610.3.72.166
16810.3.72.167/3210.3.72.167 – 10.3.72.16710.3.72.167
16910.3.72.168/3210.3.72.168 – 10.3.72.16810.3.72.168
17010.3.72.169/3210.3.72.169 – 10.3.72.16910.3.72.169
17110.3.72.170/3210.3.72.170 – 10.3.72.17010.3.72.170
17210.3.72.171/3210.3.72.171 – 10.3.72.17110.3.72.171
17310.3.72.172/3210.3.72.172 – 10.3.72.17210.3.72.172
17410.3.72.173/3210.3.72.173 – 10.3.72.17310.3.72.173
17510.3.72.174/3210.3.72.174 – 10.3.72.17410.3.72.174
17610.3.72.175/3210.3.72.175 – 10.3.72.17510.3.72.175
17710.3.72.176/3210.3.72.176 – 10.3.72.17610.3.72.176
17810.3.72.177/3210.3.72.177 – 10.3.72.17710.3.72.177
17910.3.72.178/3210.3.72.178 – 10.3.72.17810.3.72.178
18010.3.72.179/3210.3.72.179 – 10.3.72.17910.3.72.179
18110.3.72.180/3210.3.72.180 – 10.3.72.18010.3.72.180
18210.3.72.181/3210.3.72.181 – 10.3.72.18110.3.72.181
18310.3.72.182/3210.3.72.182 – 10.3.72.18210.3.72.182
18410.3.72.183/3210.3.72.183 – 10.3.72.18310.3.72.183
18510.3.72.184/3210.3.72.184 – 10.3.72.18410.3.72.184
18610.3.72.185/3210.3.72.185 – 10.3.72.18510.3.72.185
18710.3.72.186/3210.3.72.186 – 10.3.72.18610.3.72.186
18810.3.72.187/3210.3.72.187 – 10.3.72.18710.3.72.187
18910.3.72.188/3210.3.72.188 – 10.3.72.18810.3.72.188
19010.3.72.189/3210.3.72.189 – 10.3.72.18910.3.72.189
19110.3.72.190/3210.3.72.190 – 10.3.72.19010.3.72.190
19210.3.72.191/3210.3.72.191 – 10.3.72.19110.3.72.191
19310.3.72.192/3210.3.72.192 – 10.3.72.19210.3.72.192
19410.3.72.193/3210.3.72.193 – 10.3.72.19310.3.72.193
19510.3.72.194/3210.3.72.194 – 10.3.72.19410.3.72.194
19610.3.72.195/3210.3.72.195 – 10.3.72.19510.3.72.195
19710.3.72.196/3210.3.72.196 – 10.3.72.19610.3.72.196
19810.3.72.197/3210.3.72.197 – 10.3.72.19710.3.72.197
19910.3.72.198/3210.3.72.198 – 10.3.72.19810.3.72.198
20010.3.72.199/3210.3.72.199 – 10.3.72.19910.3.72.199
20110.3.72.200/3210.3.72.200 – 10.3.72.20010.3.72.200
20210.3.72.201/3210.3.72.201 – 10.3.72.20110.3.72.201
20310.3.72.202/3210.3.72.202 – 10.3.72.20210.3.72.202
20410.3.72.203/3210.3.72.203 – 10.3.72.20310.3.72.203
20510.3.72.204/3210.3.72.204 – 10.3.72.20410.3.72.204
20610.3.72.205/3210.3.72.205 – 10.3.72.20510.3.72.205
20710.3.72.206/3210.3.72.206 – 10.3.72.20610.3.72.206
20810.3.72.207/3210.3.72.207 – 10.3.72.20710.3.72.207
20910.3.72.208/3210.3.72.208 – 10.3.72.20810.3.72.208
21010.3.72.209/3210.3.72.209 – 10.3.72.20910.3.72.209
21110.3.72.210/3210.3.72.210 – 10.3.72.21010.3.72.210
21210.3.72.211/3210.3.72.211 – 10.3.72.21110.3.72.211
21310.3.72.212/3210.3.72.212 – 10.3.72.21210.3.72.212
21410.3.72.213/3210.3.72.213 – 10.3.72.21310.3.72.213
21510.3.72.214/3210.3.72.214 – 10.3.72.21410.3.72.214
21610.3.72.215/3210.3.72.215 – 10.3.72.21510.3.72.215
21710.3.72.216/3210.3.72.216 – 10.3.72.21610.3.72.216
21810.3.72.217/3210.3.72.217 – 10.3.72.21710.3.72.217
21910.3.72.218/3210.3.72.218 – 10.3.72.21810.3.72.218
22010.3.72.219/3210.3.72.219 – 10.3.72.21910.3.72.219
22110.3.72.220/3210.3.72.220 – 10.3.72.22010.3.72.220
22210.3.72.221/3210.3.72.221 – 10.3.72.22110.3.72.221
22310.3.72.222/3210.3.72.222 – 10.3.72.22210.3.72.222
22410.3.72.223/3210.3.72.223 – 10.3.72.22310.3.72.223
22510.3.72.224/3210.3.72.224 – 10.3.72.22410.3.72.224
22610.3.72.225/3210.3.72.225 – 10.3.72.22510.3.72.225
22710.3.72.226/3210.3.72.226 – 10.3.72.22610.3.72.226
22810.3.72.227/3210.3.72.227 – 10.3.72.22710.3.72.227
22910.3.72.228/3210.3.72.228 – 10.3.72.22810.3.72.228
23010.3.72.229/3210.3.72.229 – 10.3.72.22910.3.72.229
23110.3.72.230/3210.3.72.230 – 10.3.72.23010.3.72.230
23210.3.72.231/3210.3.72.231 – 10.3.72.23110.3.72.231
23310.3.72.232/3210.3.72.232 – 10.3.72.23210.3.72.232
23410.3.72.233/3210.3.72.233 – 10.3.72.23310.3.72.233
23510.3.72.234/3210.3.72.234 – 10.3.72.23410.3.72.234
23610.3.72.235/3210.3.72.235 – 10.3.72.23510.3.72.235
23710.3.72.236/3210.3.72.236 – 10.3.72.23610.3.72.236
23810.3.72.237/3210.3.72.237 – 10.3.72.23710.3.72.237
23910.3.72.238/3210.3.72.238 – 10.3.72.23810.3.72.238
24010.3.72.239/3210.3.72.239 – 10.3.72.23910.3.72.239
24110.3.72.240/3210.3.72.240 – 10.3.72.24010.3.72.240
24210.3.72.241/3210.3.72.241 – 10.3.72.24110.3.72.241
24310.3.72.242/3210.3.72.242 – 10.3.72.24210.3.72.242
24410.3.72.243/3210.3.72.243 – 10.3.72.24310.3.72.243
24510.3.72.244/3210.3.72.244 – 10.3.72.24410.3.72.244
24610.3.72.245/3210.3.72.245 – 10.3.72.24510.3.72.245
24710.3.72.246/3210.3.72.246 – 10.3.72.24610.3.72.246
24810.3.72.247/3210.3.72.247 – 10.3.72.24710.3.72.247
24910.3.72.248/3210.3.72.248 – 10.3.72.24810.3.72.248
25010.3.72.249/3210.3.72.249 – 10.3.72.24910.3.72.249
25110.3.72.250/3210.3.72.250 – 10.3.72.25010.3.72.250
25210.3.72.251/3210.3.72.251 – 10.3.72.25110.3.72.251
25310.3.72.252/3210.3.72.252 – 10.3.72.25210.3.72.252
25410.3.72.253/3210.3.72.253 – 10.3.72.25310.3.72.253
25510.3.72.254/3210.3.72.254 – 10.3.72.25410.3.72.254
25610.3.72.255/3210.3.72.255 – 10.3.72.25510.3.72.255

showing 256 of 2,048

01 / table

IPv4 CIDR prefix table.

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

prefixsubnet maskaddresseshostsin your /21
/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-
/21255.255.248.02,0482,0461
/22255.255.252.01,0241,0222 split →
/23255.255.254.05125104 split →
/24255.255.255.02562548 split →
/25255.255.255.12812812616 split →
/26255.255.255.192646232 split →
/27255.255.255.224323064 split →
/28255.255.255.2401614128 split →
/29255.255.255.24886256 split →
/30255.255.255.25242512 split →
/31255.255.255.254221,024 split →
/32255.255.255.255112,048 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 →