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)10.5.56.0/21
network10.5.56.0/21
broadcast10.5.63.255
first host10.5.56.1
last host10.5.63.254
subnet mask255.255.248.0
wildcard0.0.7.255
addresses2,048
usable hosts2,046
classA
ipcalc 10.5.56.0/21
address00001010.00000101.00111000.00000000
subnet mask11111111.11111111.11111000.00000000
network00001010.00000101.00111000.00000000
broadcast00001010.00000101.00111111.11111111
green = network part, grey = host part
hex0x0a053800
decimal168114176
reverse dns0.56.5.10.in-addr.arpa
ipv4-mapped::ffff:a05:3800

/21 split into /31 · 1,024 subnets

close ×
#networkhost rangebroadcast
110.5.56.0/3110.5.56.0 – 10.5.56.110.5.56.1
210.5.56.2/3110.5.56.2 – 10.5.56.310.5.56.3
310.5.56.4/3110.5.56.4 – 10.5.56.510.5.56.5
410.5.56.6/3110.5.56.6 – 10.5.56.710.5.56.7
510.5.56.8/3110.5.56.8 – 10.5.56.910.5.56.9
610.5.56.10/3110.5.56.10 – 10.5.56.1110.5.56.11
710.5.56.12/3110.5.56.12 – 10.5.56.1310.5.56.13
810.5.56.14/3110.5.56.14 – 10.5.56.1510.5.56.15
910.5.56.16/3110.5.56.16 – 10.5.56.1710.5.56.17
1010.5.56.18/3110.5.56.18 – 10.5.56.1910.5.56.19
1110.5.56.20/3110.5.56.20 – 10.5.56.2110.5.56.21
1210.5.56.22/3110.5.56.22 – 10.5.56.2310.5.56.23
1310.5.56.24/3110.5.56.24 – 10.5.56.2510.5.56.25
1410.5.56.26/3110.5.56.26 – 10.5.56.2710.5.56.27
1510.5.56.28/3110.5.56.28 – 10.5.56.2910.5.56.29
1610.5.56.30/3110.5.56.30 – 10.5.56.3110.5.56.31
1710.5.56.32/3110.5.56.32 – 10.5.56.3310.5.56.33
1810.5.56.34/3110.5.56.34 – 10.5.56.3510.5.56.35
1910.5.56.36/3110.5.56.36 – 10.5.56.3710.5.56.37
2010.5.56.38/3110.5.56.38 – 10.5.56.3910.5.56.39
2110.5.56.40/3110.5.56.40 – 10.5.56.4110.5.56.41
2210.5.56.42/3110.5.56.42 – 10.5.56.4310.5.56.43
2310.5.56.44/3110.5.56.44 – 10.5.56.4510.5.56.45
2410.5.56.46/3110.5.56.46 – 10.5.56.4710.5.56.47
2510.5.56.48/3110.5.56.48 – 10.5.56.4910.5.56.49
2610.5.56.50/3110.5.56.50 – 10.5.56.5110.5.56.51
2710.5.56.52/3110.5.56.52 – 10.5.56.5310.5.56.53
2810.5.56.54/3110.5.56.54 – 10.5.56.5510.5.56.55
2910.5.56.56/3110.5.56.56 – 10.5.56.5710.5.56.57
3010.5.56.58/3110.5.56.58 – 10.5.56.5910.5.56.59
3110.5.56.60/3110.5.56.60 – 10.5.56.6110.5.56.61
3210.5.56.62/3110.5.56.62 – 10.5.56.6310.5.56.63
3310.5.56.64/3110.5.56.64 – 10.5.56.6510.5.56.65
3410.5.56.66/3110.5.56.66 – 10.5.56.6710.5.56.67
3510.5.56.68/3110.5.56.68 – 10.5.56.6910.5.56.69
3610.5.56.70/3110.5.56.70 – 10.5.56.7110.5.56.71
3710.5.56.72/3110.5.56.72 – 10.5.56.7310.5.56.73
3810.5.56.74/3110.5.56.74 – 10.5.56.7510.5.56.75
3910.5.56.76/3110.5.56.76 – 10.5.56.7710.5.56.77
4010.5.56.78/3110.5.56.78 – 10.5.56.7910.5.56.79
4110.5.56.80/3110.5.56.80 – 10.5.56.8110.5.56.81
4210.5.56.82/3110.5.56.82 – 10.5.56.8310.5.56.83
4310.5.56.84/3110.5.56.84 – 10.5.56.8510.5.56.85
4410.5.56.86/3110.5.56.86 – 10.5.56.8710.5.56.87
4510.5.56.88/3110.5.56.88 – 10.5.56.8910.5.56.89
4610.5.56.90/3110.5.56.90 – 10.5.56.9110.5.56.91
4710.5.56.92/3110.5.56.92 – 10.5.56.9310.5.56.93
4810.5.56.94/3110.5.56.94 – 10.5.56.9510.5.56.95
4910.5.56.96/3110.5.56.96 – 10.5.56.9710.5.56.97
5010.5.56.98/3110.5.56.98 – 10.5.56.9910.5.56.99
5110.5.56.100/3110.5.56.100 – 10.5.56.10110.5.56.101
5210.5.56.102/3110.5.56.102 – 10.5.56.10310.5.56.103
5310.5.56.104/3110.5.56.104 – 10.5.56.10510.5.56.105
5410.5.56.106/3110.5.56.106 – 10.5.56.10710.5.56.107
5510.5.56.108/3110.5.56.108 – 10.5.56.10910.5.56.109
5610.5.56.110/3110.5.56.110 – 10.5.56.11110.5.56.111
5710.5.56.112/3110.5.56.112 – 10.5.56.11310.5.56.113
5810.5.56.114/3110.5.56.114 – 10.5.56.11510.5.56.115
5910.5.56.116/3110.5.56.116 – 10.5.56.11710.5.56.117
6010.5.56.118/3110.5.56.118 – 10.5.56.11910.5.56.119
6110.5.56.120/3110.5.56.120 – 10.5.56.12110.5.56.121
6210.5.56.122/3110.5.56.122 – 10.5.56.12310.5.56.123
6310.5.56.124/3110.5.56.124 – 10.5.56.12510.5.56.125
6410.5.56.126/3110.5.56.126 – 10.5.56.12710.5.56.127
6510.5.56.128/3110.5.56.128 – 10.5.56.12910.5.56.129
6610.5.56.130/3110.5.56.130 – 10.5.56.13110.5.56.131
6710.5.56.132/3110.5.56.132 – 10.5.56.13310.5.56.133
6810.5.56.134/3110.5.56.134 – 10.5.56.13510.5.56.135
6910.5.56.136/3110.5.56.136 – 10.5.56.13710.5.56.137
7010.5.56.138/3110.5.56.138 – 10.5.56.13910.5.56.139
7110.5.56.140/3110.5.56.140 – 10.5.56.14110.5.56.141
7210.5.56.142/3110.5.56.142 – 10.5.56.14310.5.56.143
7310.5.56.144/3110.5.56.144 – 10.5.56.14510.5.56.145
7410.5.56.146/3110.5.56.146 – 10.5.56.14710.5.56.147
7510.5.56.148/3110.5.56.148 – 10.5.56.14910.5.56.149
7610.5.56.150/3110.5.56.150 – 10.5.56.15110.5.56.151
7710.5.56.152/3110.5.56.152 – 10.5.56.15310.5.56.153
7810.5.56.154/3110.5.56.154 – 10.5.56.15510.5.56.155
7910.5.56.156/3110.5.56.156 – 10.5.56.15710.5.56.157
8010.5.56.158/3110.5.56.158 – 10.5.56.15910.5.56.159
8110.5.56.160/3110.5.56.160 – 10.5.56.16110.5.56.161
8210.5.56.162/3110.5.56.162 – 10.5.56.16310.5.56.163
8310.5.56.164/3110.5.56.164 – 10.5.56.16510.5.56.165
8410.5.56.166/3110.5.56.166 – 10.5.56.16710.5.56.167
8510.5.56.168/3110.5.56.168 – 10.5.56.16910.5.56.169
8610.5.56.170/3110.5.56.170 – 10.5.56.17110.5.56.171
8710.5.56.172/3110.5.56.172 – 10.5.56.17310.5.56.173
8810.5.56.174/3110.5.56.174 – 10.5.56.17510.5.56.175
8910.5.56.176/3110.5.56.176 – 10.5.56.17710.5.56.177
9010.5.56.178/3110.5.56.178 – 10.5.56.17910.5.56.179
9110.5.56.180/3110.5.56.180 – 10.5.56.18110.5.56.181
9210.5.56.182/3110.5.56.182 – 10.5.56.18310.5.56.183
9310.5.56.184/3110.5.56.184 – 10.5.56.18510.5.56.185
9410.5.56.186/3110.5.56.186 – 10.5.56.18710.5.56.187
9510.5.56.188/3110.5.56.188 – 10.5.56.18910.5.56.189
9610.5.56.190/3110.5.56.190 – 10.5.56.19110.5.56.191
9710.5.56.192/3110.5.56.192 – 10.5.56.19310.5.56.193
9810.5.56.194/3110.5.56.194 – 10.5.56.19510.5.56.195
9910.5.56.196/3110.5.56.196 – 10.5.56.19710.5.56.197
10010.5.56.198/3110.5.56.198 – 10.5.56.19910.5.56.199
10110.5.56.200/3110.5.56.200 – 10.5.56.20110.5.56.201
10210.5.56.202/3110.5.56.202 – 10.5.56.20310.5.56.203
10310.5.56.204/3110.5.56.204 – 10.5.56.20510.5.56.205
10410.5.56.206/3110.5.56.206 – 10.5.56.20710.5.56.207
10510.5.56.208/3110.5.56.208 – 10.5.56.20910.5.56.209
10610.5.56.210/3110.5.56.210 – 10.5.56.21110.5.56.211
10710.5.56.212/3110.5.56.212 – 10.5.56.21310.5.56.213
10810.5.56.214/3110.5.56.214 – 10.5.56.21510.5.56.215
10910.5.56.216/3110.5.56.216 – 10.5.56.21710.5.56.217
11010.5.56.218/3110.5.56.218 – 10.5.56.21910.5.56.219
11110.5.56.220/3110.5.56.220 – 10.5.56.22110.5.56.221
11210.5.56.222/3110.5.56.222 – 10.5.56.22310.5.56.223
11310.5.56.224/3110.5.56.224 – 10.5.56.22510.5.56.225
11410.5.56.226/3110.5.56.226 – 10.5.56.22710.5.56.227
11510.5.56.228/3110.5.56.228 – 10.5.56.22910.5.56.229
11610.5.56.230/3110.5.56.230 – 10.5.56.23110.5.56.231
11710.5.56.232/3110.5.56.232 – 10.5.56.23310.5.56.233
11810.5.56.234/3110.5.56.234 – 10.5.56.23510.5.56.235
11910.5.56.236/3110.5.56.236 – 10.5.56.23710.5.56.237
12010.5.56.238/3110.5.56.238 – 10.5.56.23910.5.56.239
12110.5.56.240/3110.5.56.240 – 10.5.56.24110.5.56.241
12210.5.56.242/3110.5.56.242 – 10.5.56.24310.5.56.243
12310.5.56.244/3110.5.56.244 – 10.5.56.24510.5.56.245
12410.5.56.246/3110.5.56.246 – 10.5.56.24710.5.56.247
12510.5.56.248/3110.5.56.248 – 10.5.56.24910.5.56.249
12610.5.56.250/3110.5.56.250 – 10.5.56.25110.5.56.251
12710.5.56.252/3110.5.56.252 – 10.5.56.25310.5.56.253
12810.5.56.254/3110.5.56.254 – 10.5.56.25510.5.56.255
12910.5.57.0/3110.5.57.0 – 10.5.57.110.5.57.1
13010.5.57.2/3110.5.57.2 – 10.5.57.310.5.57.3
13110.5.57.4/3110.5.57.4 – 10.5.57.510.5.57.5
13210.5.57.6/3110.5.57.6 – 10.5.57.710.5.57.7
13310.5.57.8/3110.5.57.8 – 10.5.57.910.5.57.9
13410.5.57.10/3110.5.57.10 – 10.5.57.1110.5.57.11
13510.5.57.12/3110.5.57.12 – 10.5.57.1310.5.57.13
13610.5.57.14/3110.5.57.14 – 10.5.57.1510.5.57.15
13710.5.57.16/3110.5.57.16 – 10.5.57.1710.5.57.17
13810.5.57.18/3110.5.57.18 – 10.5.57.1910.5.57.19
13910.5.57.20/3110.5.57.20 – 10.5.57.2110.5.57.21
14010.5.57.22/3110.5.57.22 – 10.5.57.2310.5.57.23
14110.5.57.24/3110.5.57.24 – 10.5.57.2510.5.57.25
14210.5.57.26/3110.5.57.26 – 10.5.57.2710.5.57.27
14310.5.57.28/3110.5.57.28 – 10.5.57.2910.5.57.29
14410.5.57.30/3110.5.57.30 – 10.5.57.3110.5.57.31
14510.5.57.32/3110.5.57.32 – 10.5.57.3310.5.57.33
14610.5.57.34/3110.5.57.34 – 10.5.57.3510.5.57.35
14710.5.57.36/3110.5.57.36 – 10.5.57.3710.5.57.37
14810.5.57.38/3110.5.57.38 – 10.5.57.3910.5.57.39
14910.5.57.40/3110.5.57.40 – 10.5.57.4110.5.57.41
15010.5.57.42/3110.5.57.42 – 10.5.57.4310.5.57.43
15110.5.57.44/3110.5.57.44 – 10.5.57.4510.5.57.45
15210.5.57.46/3110.5.57.46 – 10.5.57.4710.5.57.47
15310.5.57.48/3110.5.57.48 – 10.5.57.4910.5.57.49
15410.5.57.50/3110.5.57.50 – 10.5.57.5110.5.57.51
15510.5.57.52/3110.5.57.52 – 10.5.57.5310.5.57.53
15610.5.57.54/3110.5.57.54 – 10.5.57.5510.5.57.55
15710.5.57.56/3110.5.57.56 – 10.5.57.5710.5.57.57
15810.5.57.58/3110.5.57.58 – 10.5.57.5910.5.57.59
15910.5.57.60/3110.5.57.60 – 10.5.57.6110.5.57.61
16010.5.57.62/3110.5.57.62 – 10.5.57.6310.5.57.63
16110.5.57.64/3110.5.57.64 – 10.5.57.6510.5.57.65
16210.5.57.66/3110.5.57.66 – 10.5.57.6710.5.57.67
16310.5.57.68/3110.5.57.68 – 10.5.57.6910.5.57.69
16410.5.57.70/3110.5.57.70 – 10.5.57.7110.5.57.71
16510.5.57.72/3110.5.57.72 – 10.5.57.7310.5.57.73
16610.5.57.74/3110.5.57.74 – 10.5.57.7510.5.57.75
16710.5.57.76/3110.5.57.76 – 10.5.57.7710.5.57.77
16810.5.57.78/3110.5.57.78 – 10.5.57.7910.5.57.79
16910.5.57.80/3110.5.57.80 – 10.5.57.8110.5.57.81
17010.5.57.82/3110.5.57.82 – 10.5.57.8310.5.57.83
17110.5.57.84/3110.5.57.84 – 10.5.57.8510.5.57.85
17210.5.57.86/3110.5.57.86 – 10.5.57.8710.5.57.87
17310.5.57.88/3110.5.57.88 – 10.5.57.8910.5.57.89
17410.5.57.90/3110.5.57.90 – 10.5.57.9110.5.57.91
17510.5.57.92/3110.5.57.92 – 10.5.57.9310.5.57.93
17610.5.57.94/3110.5.57.94 – 10.5.57.9510.5.57.95
17710.5.57.96/3110.5.57.96 – 10.5.57.9710.5.57.97
17810.5.57.98/3110.5.57.98 – 10.5.57.9910.5.57.99
17910.5.57.100/3110.5.57.100 – 10.5.57.10110.5.57.101
18010.5.57.102/3110.5.57.102 – 10.5.57.10310.5.57.103
18110.5.57.104/3110.5.57.104 – 10.5.57.10510.5.57.105
18210.5.57.106/3110.5.57.106 – 10.5.57.10710.5.57.107
18310.5.57.108/3110.5.57.108 – 10.5.57.10910.5.57.109
18410.5.57.110/3110.5.57.110 – 10.5.57.11110.5.57.111
18510.5.57.112/3110.5.57.112 – 10.5.57.11310.5.57.113
18610.5.57.114/3110.5.57.114 – 10.5.57.11510.5.57.115
18710.5.57.116/3110.5.57.116 – 10.5.57.11710.5.57.117
18810.5.57.118/3110.5.57.118 – 10.5.57.11910.5.57.119
18910.5.57.120/3110.5.57.120 – 10.5.57.12110.5.57.121
19010.5.57.122/3110.5.57.122 – 10.5.57.12310.5.57.123
19110.5.57.124/3110.5.57.124 – 10.5.57.12510.5.57.125
19210.5.57.126/3110.5.57.126 – 10.5.57.12710.5.57.127
19310.5.57.128/3110.5.57.128 – 10.5.57.12910.5.57.129
19410.5.57.130/3110.5.57.130 – 10.5.57.13110.5.57.131
19510.5.57.132/3110.5.57.132 – 10.5.57.13310.5.57.133
19610.5.57.134/3110.5.57.134 – 10.5.57.13510.5.57.135
19710.5.57.136/3110.5.57.136 – 10.5.57.13710.5.57.137
19810.5.57.138/3110.5.57.138 – 10.5.57.13910.5.57.139
19910.5.57.140/3110.5.57.140 – 10.5.57.14110.5.57.141
20010.5.57.142/3110.5.57.142 – 10.5.57.14310.5.57.143
20110.5.57.144/3110.5.57.144 – 10.5.57.14510.5.57.145
20210.5.57.146/3110.5.57.146 – 10.5.57.14710.5.57.147
20310.5.57.148/3110.5.57.148 – 10.5.57.14910.5.57.149
20410.5.57.150/3110.5.57.150 – 10.5.57.15110.5.57.151
20510.5.57.152/3110.5.57.152 – 10.5.57.15310.5.57.153
20610.5.57.154/3110.5.57.154 – 10.5.57.15510.5.57.155
20710.5.57.156/3110.5.57.156 – 10.5.57.15710.5.57.157
20810.5.57.158/3110.5.57.158 – 10.5.57.15910.5.57.159
20910.5.57.160/3110.5.57.160 – 10.5.57.16110.5.57.161
21010.5.57.162/3110.5.57.162 – 10.5.57.16310.5.57.163
21110.5.57.164/3110.5.57.164 – 10.5.57.16510.5.57.165
21210.5.57.166/3110.5.57.166 – 10.5.57.16710.5.57.167
21310.5.57.168/3110.5.57.168 – 10.5.57.16910.5.57.169
21410.5.57.170/3110.5.57.170 – 10.5.57.17110.5.57.171
21510.5.57.172/3110.5.57.172 – 10.5.57.17310.5.57.173
21610.5.57.174/3110.5.57.174 – 10.5.57.17510.5.57.175
21710.5.57.176/3110.5.57.176 – 10.5.57.17710.5.57.177
21810.5.57.178/3110.5.57.178 – 10.5.57.17910.5.57.179
21910.5.57.180/3110.5.57.180 – 10.5.57.18110.5.57.181
22010.5.57.182/3110.5.57.182 – 10.5.57.18310.5.57.183
22110.5.57.184/3110.5.57.184 – 10.5.57.18510.5.57.185
22210.5.57.186/3110.5.57.186 – 10.5.57.18710.5.57.187
22310.5.57.188/3110.5.57.188 – 10.5.57.18910.5.57.189
22410.5.57.190/3110.5.57.190 – 10.5.57.19110.5.57.191
22510.5.57.192/3110.5.57.192 – 10.5.57.19310.5.57.193
22610.5.57.194/3110.5.57.194 – 10.5.57.19510.5.57.195
22710.5.57.196/3110.5.57.196 – 10.5.57.19710.5.57.197
22810.5.57.198/3110.5.57.198 – 10.5.57.19910.5.57.199
22910.5.57.200/3110.5.57.200 – 10.5.57.20110.5.57.201
23010.5.57.202/3110.5.57.202 – 10.5.57.20310.5.57.203
23110.5.57.204/3110.5.57.204 – 10.5.57.20510.5.57.205
23210.5.57.206/3110.5.57.206 – 10.5.57.20710.5.57.207
23310.5.57.208/3110.5.57.208 – 10.5.57.20910.5.57.209
23410.5.57.210/3110.5.57.210 – 10.5.57.21110.5.57.211
23510.5.57.212/3110.5.57.212 – 10.5.57.21310.5.57.213
23610.5.57.214/3110.5.57.214 – 10.5.57.21510.5.57.215
23710.5.57.216/3110.5.57.216 – 10.5.57.21710.5.57.217
23810.5.57.218/3110.5.57.218 – 10.5.57.21910.5.57.219
23910.5.57.220/3110.5.57.220 – 10.5.57.22110.5.57.221
24010.5.57.222/3110.5.57.222 – 10.5.57.22310.5.57.223
24110.5.57.224/3110.5.57.224 – 10.5.57.22510.5.57.225
24210.5.57.226/3110.5.57.226 – 10.5.57.22710.5.57.227
24310.5.57.228/3110.5.57.228 – 10.5.57.22910.5.57.229
24410.5.57.230/3110.5.57.230 – 10.5.57.23110.5.57.231
24510.5.57.232/3110.5.57.232 – 10.5.57.23310.5.57.233
24610.5.57.234/3110.5.57.234 – 10.5.57.23510.5.57.235
24710.5.57.236/3110.5.57.236 – 10.5.57.23710.5.57.237
24810.5.57.238/3110.5.57.238 – 10.5.57.23910.5.57.239
24910.5.57.240/3110.5.57.240 – 10.5.57.24110.5.57.241
25010.5.57.242/3110.5.57.242 – 10.5.57.24310.5.57.243
25110.5.57.244/3110.5.57.244 – 10.5.57.24510.5.57.245
25210.5.57.246/3110.5.57.246 – 10.5.57.24710.5.57.247
25310.5.57.248/3110.5.57.248 – 10.5.57.24910.5.57.249
25410.5.57.250/3110.5.57.250 – 10.5.57.25110.5.57.251
25510.5.57.252/3110.5.57.252 – 10.5.57.25310.5.57.253
25610.5.57.254/3110.5.57.254 – 10.5.57.25510.5.57.255

showing 256 of 1,024

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 →