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)10.7.72.0/21
network10.7.72.0/21
broadcast10.7.79.255
first host10.7.72.1
last host10.7.79.254
subnet mask255.255.248.0
wildcard0.0.7.255
addresses2,048
usable hosts2,046
classA
ipcalc 10.7.72.0/21
address00001010.00000111.01001000.00000000
subnet mask11111111.11111111.11111000.00000000
network00001010.00000111.01001000.00000000
broadcast00001010.00000111.01001111.11111111
green = network part, grey = host part
hex0x0a074800
decimal168249344
reverse dns0.72.7.10.in-addr.arpa
ipv4-mapped::ffff:a07:4800

/21 split into /29 · 256 subnets

close ×
#networkhost rangebroadcast
110.7.72.0/2910.7.72.1 – 10.7.72.610.7.72.7
210.7.72.8/2910.7.72.9 – 10.7.72.1410.7.72.15
310.7.72.16/2910.7.72.17 – 10.7.72.2210.7.72.23
410.7.72.24/2910.7.72.25 – 10.7.72.3010.7.72.31
510.7.72.32/2910.7.72.33 – 10.7.72.3810.7.72.39
610.7.72.40/2910.7.72.41 – 10.7.72.4610.7.72.47
710.7.72.48/2910.7.72.49 – 10.7.72.5410.7.72.55
810.7.72.56/2910.7.72.57 – 10.7.72.6210.7.72.63
910.7.72.64/2910.7.72.65 – 10.7.72.7010.7.72.71
1010.7.72.72/2910.7.72.73 – 10.7.72.7810.7.72.79
1110.7.72.80/2910.7.72.81 – 10.7.72.8610.7.72.87
1210.7.72.88/2910.7.72.89 – 10.7.72.9410.7.72.95
1310.7.72.96/2910.7.72.97 – 10.7.72.10210.7.72.103
1410.7.72.104/2910.7.72.105 – 10.7.72.11010.7.72.111
1510.7.72.112/2910.7.72.113 – 10.7.72.11810.7.72.119
1610.7.72.120/2910.7.72.121 – 10.7.72.12610.7.72.127
1710.7.72.128/2910.7.72.129 – 10.7.72.13410.7.72.135
1810.7.72.136/2910.7.72.137 – 10.7.72.14210.7.72.143
1910.7.72.144/2910.7.72.145 – 10.7.72.15010.7.72.151
2010.7.72.152/2910.7.72.153 – 10.7.72.15810.7.72.159
2110.7.72.160/2910.7.72.161 – 10.7.72.16610.7.72.167
2210.7.72.168/2910.7.72.169 – 10.7.72.17410.7.72.175
2310.7.72.176/2910.7.72.177 – 10.7.72.18210.7.72.183
2410.7.72.184/2910.7.72.185 – 10.7.72.19010.7.72.191
2510.7.72.192/2910.7.72.193 – 10.7.72.19810.7.72.199
2610.7.72.200/2910.7.72.201 – 10.7.72.20610.7.72.207
2710.7.72.208/2910.7.72.209 – 10.7.72.21410.7.72.215
2810.7.72.216/2910.7.72.217 – 10.7.72.22210.7.72.223
2910.7.72.224/2910.7.72.225 – 10.7.72.23010.7.72.231
3010.7.72.232/2910.7.72.233 – 10.7.72.23810.7.72.239
3110.7.72.240/2910.7.72.241 – 10.7.72.24610.7.72.247
3210.7.72.248/2910.7.72.249 – 10.7.72.25410.7.72.255
3310.7.73.0/2910.7.73.1 – 10.7.73.610.7.73.7
3410.7.73.8/2910.7.73.9 – 10.7.73.1410.7.73.15
3510.7.73.16/2910.7.73.17 – 10.7.73.2210.7.73.23
3610.7.73.24/2910.7.73.25 – 10.7.73.3010.7.73.31
3710.7.73.32/2910.7.73.33 – 10.7.73.3810.7.73.39
3810.7.73.40/2910.7.73.41 – 10.7.73.4610.7.73.47
3910.7.73.48/2910.7.73.49 – 10.7.73.5410.7.73.55
4010.7.73.56/2910.7.73.57 – 10.7.73.6210.7.73.63
4110.7.73.64/2910.7.73.65 – 10.7.73.7010.7.73.71
4210.7.73.72/2910.7.73.73 – 10.7.73.7810.7.73.79
4310.7.73.80/2910.7.73.81 – 10.7.73.8610.7.73.87
4410.7.73.88/2910.7.73.89 – 10.7.73.9410.7.73.95
4510.7.73.96/2910.7.73.97 – 10.7.73.10210.7.73.103
4610.7.73.104/2910.7.73.105 – 10.7.73.11010.7.73.111
4710.7.73.112/2910.7.73.113 – 10.7.73.11810.7.73.119
4810.7.73.120/2910.7.73.121 – 10.7.73.12610.7.73.127
4910.7.73.128/2910.7.73.129 – 10.7.73.13410.7.73.135
5010.7.73.136/2910.7.73.137 – 10.7.73.14210.7.73.143
5110.7.73.144/2910.7.73.145 – 10.7.73.15010.7.73.151
5210.7.73.152/2910.7.73.153 – 10.7.73.15810.7.73.159
5310.7.73.160/2910.7.73.161 – 10.7.73.16610.7.73.167
5410.7.73.168/2910.7.73.169 – 10.7.73.17410.7.73.175
5510.7.73.176/2910.7.73.177 – 10.7.73.18210.7.73.183
5610.7.73.184/2910.7.73.185 – 10.7.73.19010.7.73.191
5710.7.73.192/2910.7.73.193 – 10.7.73.19810.7.73.199
5810.7.73.200/2910.7.73.201 – 10.7.73.20610.7.73.207
5910.7.73.208/2910.7.73.209 – 10.7.73.21410.7.73.215
6010.7.73.216/2910.7.73.217 – 10.7.73.22210.7.73.223
6110.7.73.224/2910.7.73.225 – 10.7.73.23010.7.73.231
6210.7.73.232/2910.7.73.233 – 10.7.73.23810.7.73.239
6310.7.73.240/2910.7.73.241 – 10.7.73.24610.7.73.247
6410.7.73.248/2910.7.73.249 – 10.7.73.25410.7.73.255
6510.7.74.0/2910.7.74.1 – 10.7.74.610.7.74.7
6610.7.74.8/2910.7.74.9 – 10.7.74.1410.7.74.15
6710.7.74.16/2910.7.74.17 – 10.7.74.2210.7.74.23
6810.7.74.24/2910.7.74.25 – 10.7.74.3010.7.74.31
6910.7.74.32/2910.7.74.33 – 10.7.74.3810.7.74.39
7010.7.74.40/2910.7.74.41 – 10.7.74.4610.7.74.47
7110.7.74.48/2910.7.74.49 – 10.7.74.5410.7.74.55
7210.7.74.56/2910.7.74.57 – 10.7.74.6210.7.74.63
7310.7.74.64/2910.7.74.65 – 10.7.74.7010.7.74.71
7410.7.74.72/2910.7.74.73 – 10.7.74.7810.7.74.79
7510.7.74.80/2910.7.74.81 – 10.7.74.8610.7.74.87
7610.7.74.88/2910.7.74.89 – 10.7.74.9410.7.74.95
7710.7.74.96/2910.7.74.97 – 10.7.74.10210.7.74.103
7810.7.74.104/2910.7.74.105 – 10.7.74.11010.7.74.111
7910.7.74.112/2910.7.74.113 – 10.7.74.11810.7.74.119
8010.7.74.120/2910.7.74.121 – 10.7.74.12610.7.74.127
8110.7.74.128/2910.7.74.129 – 10.7.74.13410.7.74.135
8210.7.74.136/2910.7.74.137 – 10.7.74.14210.7.74.143
8310.7.74.144/2910.7.74.145 – 10.7.74.15010.7.74.151
8410.7.74.152/2910.7.74.153 – 10.7.74.15810.7.74.159
8510.7.74.160/2910.7.74.161 – 10.7.74.16610.7.74.167
8610.7.74.168/2910.7.74.169 – 10.7.74.17410.7.74.175
8710.7.74.176/2910.7.74.177 – 10.7.74.18210.7.74.183
8810.7.74.184/2910.7.74.185 – 10.7.74.19010.7.74.191
8910.7.74.192/2910.7.74.193 – 10.7.74.19810.7.74.199
9010.7.74.200/2910.7.74.201 – 10.7.74.20610.7.74.207
9110.7.74.208/2910.7.74.209 – 10.7.74.21410.7.74.215
9210.7.74.216/2910.7.74.217 – 10.7.74.22210.7.74.223
9310.7.74.224/2910.7.74.225 – 10.7.74.23010.7.74.231
9410.7.74.232/2910.7.74.233 – 10.7.74.23810.7.74.239
9510.7.74.240/2910.7.74.241 – 10.7.74.24610.7.74.247
9610.7.74.248/2910.7.74.249 – 10.7.74.25410.7.74.255
9710.7.75.0/2910.7.75.1 – 10.7.75.610.7.75.7
9810.7.75.8/2910.7.75.9 – 10.7.75.1410.7.75.15
9910.7.75.16/2910.7.75.17 – 10.7.75.2210.7.75.23
10010.7.75.24/2910.7.75.25 – 10.7.75.3010.7.75.31
10110.7.75.32/2910.7.75.33 – 10.7.75.3810.7.75.39
10210.7.75.40/2910.7.75.41 – 10.7.75.4610.7.75.47
10310.7.75.48/2910.7.75.49 – 10.7.75.5410.7.75.55
10410.7.75.56/2910.7.75.57 – 10.7.75.6210.7.75.63
10510.7.75.64/2910.7.75.65 – 10.7.75.7010.7.75.71
10610.7.75.72/2910.7.75.73 – 10.7.75.7810.7.75.79
10710.7.75.80/2910.7.75.81 – 10.7.75.8610.7.75.87
10810.7.75.88/2910.7.75.89 – 10.7.75.9410.7.75.95
10910.7.75.96/2910.7.75.97 – 10.7.75.10210.7.75.103
11010.7.75.104/2910.7.75.105 – 10.7.75.11010.7.75.111
11110.7.75.112/2910.7.75.113 – 10.7.75.11810.7.75.119
11210.7.75.120/2910.7.75.121 – 10.7.75.12610.7.75.127
11310.7.75.128/2910.7.75.129 – 10.7.75.13410.7.75.135
11410.7.75.136/2910.7.75.137 – 10.7.75.14210.7.75.143
11510.7.75.144/2910.7.75.145 – 10.7.75.15010.7.75.151
11610.7.75.152/2910.7.75.153 – 10.7.75.15810.7.75.159
11710.7.75.160/2910.7.75.161 – 10.7.75.16610.7.75.167
11810.7.75.168/2910.7.75.169 – 10.7.75.17410.7.75.175
11910.7.75.176/2910.7.75.177 – 10.7.75.18210.7.75.183
12010.7.75.184/2910.7.75.185 – 10.7.75.19010.7.75.191
12110.7.75.192/2910.7.75.193 – 10.7.75.19810.7.75.199
12210.7.75.200/2910.7.75.201 – 10.7.75.20610.7.75.207
12310.7.75.208/2910.7.75.209 – 10.7.75.21410.7.75.215
12410.7.75.216/2910.7.75.217 – 10.7.75.22210.7.75.223
12510.7.75.224/2910.7.75.225 – 10.7.75.23010.7.75.231
12610.7.75.232/2910.7.75.233 – 10.7.75.23810.7.75.239
12710.7.75.240/2910.7.75.241 – 10.7.75.24610.7.75.247
12810.7.75.248/2910.7.75.249 – 10.7.75.25410.7.75.255
12910.7.76.0/2910.7.76.1 – 10.7.76.610.7.76.7
13010.7.76.8/2910.7.76.9 – 10.7.76.1410.7.76.15
13110.7.76.16/2910.7.76.17 – 10.7.76.2210.7.76.23
13210.7.76.24/2910.7.76.25 – 10.7.76.3010.7.76.31
13310.7.76.32/2910.7.76.33 – 10.7.76.3810.7.76.39
13410.7.76.40/2910.7.76.41 – 10.7.76.4610.7.76.47
13510.7.76.48/2910.7.76.49 – 10.7.76.5410.7.76.55
13610.7.76.56/2910.7.76.57 – 10.7.76.6210.7.76.63
13710.7.76.64/2910.7.76.65 – 10.7.76.7010.7.76.71
13810.7.76.72/2910.7.76.73 – 10.7.76.7810.7.76.79
13910.7.76.80/2910.7.76.81 – 10.7.76.8610.7.76.87
14010.7.76.88/2910.7.76.89 – 10.7.76.9410.7.76.95
14110.7.76.96/2910.7.76.97 – 10.7.76.10210.7.76.103
14210.7.76.104/2910.7.76.105 – 10.7.76.11010.7.76.111
14310.7.76.112/2910.7.76.113 – 10.7.76.11810.7.76.119
14410.7.76.120/2910.7.76.121 – 10.7.76.12610.7.76.127
14510.7.76.128/2910.7.76.129 – 10.7.76.13410.7.76.135
14610.7.76.136/2910.7.76.137 – 10.7.76.14210.7.76.143
14710.7.76.144/2910.7.76.145 – 10.7.76.15010.7.76.151
14810.7.76.152/2910.7.76.153 – 10.7.76.15810.7.76.159
14910.7.76.160/2910.7.76.161 – 10.7.76.16610.7.76.167
15010.7.76.168/2910.7.76.169 – 10.7.76.17410.7.76.175
15110.7.76.176/2910.7.76.177 – 10.7.76.18210.7.76.183
15210.7.76.184/2910.7.76.185 – 10.7.76.19010.7.76.191
15310.7.76.192/2910.7.76.193 – 10.7.76.19810.7.76.199
15410.7.76.200/2910.7.76.201 – 10.7.76.20610.7.76.207
15510.7.76.208/2910.7.76.209 – 10.7.76.21410.7.76.215
15610.7.76.216/2910.7.76.217 – 10.7.76.22210.7.76.223
15710.7.76.224/2910.7.76.225 – 10.7.76.23010.7.76.231
15810.7.76.232/2910.7.76.233 – 10.7.76.23810.7.76.239
15910.7.76.240/2910.7.76.241 – 10.7.76.24610.7.76.247
16010.7.76.248/2910.7.76.249 – 10.7.76.25410.7.76.255
16110.7.77.0/2910.7.77.1 – 10.7.77.610.7.77.7
16210.7.77.8/2910.7.77.9 – 10.7.77.1410.7.77.15
16310.7.77.16/2910.7.77.17 – 10.7.77.2210.7.77.23
16410.7.77.24/2910.7.77.25 – 10.7.77.3010.7.77.31
16510.7.77.32/2910.7.77.33 – 10.7.77.3810.7.77.39
16610.7.77.40/2910.7.77.41 – 10.7.77.4610.7.77.47
16710.7.77.48/2910.7.77.49 – 10.7.77.5410.7.77.55
16810.7.77.56/2910.7.77.57 – 10.7.77.6210.7.77.63
16910.7.77.64/2910.7.77.65 – 10.7.77.7010.7.77.71
17010.7.77.72/2910.7.77.73 – 10.7.77.7810.7.77.79
17110.7.77.80/2910.7.77.81 – 10.7.77.8610.7.77.87
17210.7.77.88/2910.7.77.89 – 10.7.77.9410.7.77.95
17310.7.77.96/2910.7.77.97 – 10.7.77.10210.7.77.103
17410.7.77.104/2910.7.77.105 – 10.7.77.11010.7.77.111
17510.7.77.112/2910.7.77.113 – 10.7.77.11810.7.77.119
17610.7.77.120/2910.7.77.121 – 10.7.77.12610.7.77.127
17710.7.77.128/2910.7.77.129 – 10.7.77.13410.7.77.135
17810.7.77.136/2910.7.77.137 – 10.7.77.14210.7.77.143
17910.7.77.144/2910.7.77.145 – 10.7.77.15010.7.77.151
18010.7.77.152/2910.7.77.153 – 10.7.77.15810.7.77.159
18110.7.77.160/2910.7.77.161 – 10.7.77.16610.7.77.167
18210.7.77.168/2910.7.77.169 – 10.7.77.17410.7.77.175
18310.7.77.176/2910.7.77.177 – 10.7.77.18210.7.77.183
18410.7.77.184/2910.7.77.185 – 10.7.77.19010.7.77.191
18510.7.77.192/2910.7.77.193 – 10.7.77.19810.7.77.199
18610.7.77.200/2910.7.77.201 – 10.7.77.20610.7.77.207
18710.7.77.208/2910.7.77.209 – 10.7.77.21410.7.77.215
18810.7.77.216/2910.7.77.217 – 10.7.77.22210.7.77.223
18910.7.77.224/2910.7.77.225 – 10.7.77.23010.7.77.231
19010.7.77.232/2910.7.77.233 – 10.7.77.23810.7.77.239
19110.7.77.240/2910.7.77.241 – 10.7.77.24610.7.77.247
19210.7.77.248/2910.7.77.249 – 10.7.77.25410.7.77.255
19310.7.78.0/2910.7.78.1 – 10.7.78.610.7.78.7
19410.7.78.8/2910.7.78.9 – 10.7.78.1410.7.78.15
19510.7.78.16/2910.7.78.17 – 10.7.78.2210.7.78.23
19610.7.78.24/2910.7.78.25 – 10.7.78.3010.7.78.31
19710.7.78.32/2910.7.78.33 – 10.7.78.3810.7.78.39
19810.7.78.40/2910.7.78.41 – 10.7.78.4610.7.78.47
19910.7.78.48/2910.7.78.49 – 10.7.78.5410.7.78.55
20010.7.78.56/2910.7.78.57 – 10.7.78.6210.7.78.63
20110.7.78.64/2910.7.78.65 – 10.7.78.7010.7.78.71
20210.7.78.72/2910.7.78.73 – 10.7.78.7810.7.78.79
20310.7.78.80/2910.7.78.81 – 10.7.78.8610.7.78.87
20410.7.78.88/2910.7.78.89 – 10.7.78.9410.7.78.95
20510.7.78.96/2910.7.78.97 – 10.7.78.10210.7.78.103
20610.7.78.104/2910.7.78.105 – 10.7.78.11010.7.78.111
20710.7.78.112/2910.7.78.113 – 10.7.78.11810.7.78.119
20810.7.78.120/2910.7.78.121 – 10.7.78.12610.7.78.127
20910.7.78.128/2910.7.78.129 – 10.7.78.13410.7.78.135
21010.7.78.136/2910.7.78.137 – 10.7.78.14210.7.78.143
21110.7.78.144/2910.7.78.145 – 10.7.78.15010.7.78.151
21210.7.78.152/2910.7.78.153 – 10.7.78.15810.7.78.159
21310.7.78.160/2910.7.78.161 – 10.7.78.16610.7.78.167
21410.7.78.168/2910.7.78.169 – 10.7.78.17410.7.78.175
21510.7.78.176/2910.7.78.177 – 10.7.78.18210.7.78.183
21610.7.78.184/2910.7.78.185 – 10.7.78.19010.7.78.191
21710.7.78.192/2910.7.78.193 – 10.7.78.19810.7.78.199
21810.7.78.200/2910.7.78.201 – 10.7.78.20610.7.78.207
21910.7.78.208/2910.7.78.209 – 10.7.78.21410.7.78.215
22010.7.78.216/2910.7.78.217 – 10.7.78.22210.7.78.223
22110.7.78.224/2910.7.78.225 – 10.7.78.23010.7.78.231
22210.7.78.232/2910.7.78.233 – 10.7.78.23810.7.78.239
22310.7.78.240/2910.7.78.241 – 10.7.78.24610.7.78.247
22410.7.78.248/2910.7.78.249 – 10.7.78.25410.7.78.255
22510.7.79.0/2910.7.79.1 – 10.7.79.610.7.79.7
22610.7.79.8/2910.7.79.9 – 10.7.79.1410.7.79.15
22710.7.79.16/2910.7.79.17 – 10.7.79.2210.7.79.23
22810.7.79.24/2910.7.79.25 – 10.7.79.3010.7.79.31
22910.7.79.32/2910.7.79.33 – 10.7.79.3810.7.79.39
23010.7.79.40/2910.7.79.41 – 10.7.79.4610.7.79.47
23110.7.79.48/2910.7.79.49 – 10.7.79.5410.7.79.55
23210.7.79.56/2910.7.79.57 – 10.7.79.6210.7.79.63
23310.7.79.64/2910.7.79.65 – 10.7.79.7010.7.79.71
23410.7.79.72/2910.7.79.73 – 10.7.79.7810.7.79.79
23510.7.79.80/2910.7.79.81 – 10.7.79.8610.7.79.87
23610.7.79.88/2910.7.79.89 – 10.7.79.9410.7.79.95
23710.7.79.96/2910.7.79.97 – 10.7.79.10210.7.79.103
23810.7.79.104/2910.7.79.105 – 10.7.79.11010.7.79.111
23910.7.79.112/2910.7.79.113 – 10.7.79.11810.7.79.119
24010.7.79.120/2910.7.79.121 – 10.7.79.12610.7.79.127
24110.7.79.128/2910.7.79.129 – 10.7.79.13410.7.79.135
24210.7.79.136/2910.7.79.137 – 10.7.79.14210.7.79.143
24310.7.79.144/2910.7.79.145 – 10.7.79.15010.7.79.151
24410.7.79.152/2910.7.79.153 – 10.7.79.15810.7.79.159
24510.7.79.160/2910.7.79.161 – 10.7.79.16610.7.79.167
24610.7.79.168/2910.7.79.169 – 10.7.79.17410.7.79.175
24710.7.79.176/2910.7.79.177 – 10.7.79.18210.7.79.183
24810.7.79.184/2910.7.79.185 – 10.7.79.19010.7.79.191
24910.7.79.192/2910.7.79.193 – 10.7.79.19810.7.79.199
25010.7.79.200/2910.7.79.201 – 10.7.79.20610.7.79.207
25110.7.79.208/2910.7.79.209 – 10.7.79.21410.7.79.215
25210.7.79.216/2910.7.79.217 – 10.7.79.22210.7.79.223
25310.7.79.224/2910.7.79.225 – 10.7.79.23010.7.79.231
25410.7.79.232/2910.7.79.233 – 10.7.79.23810.7.79.239
25510.7.79.240/2910.7.79.241 – 10.7.79.24610.7.79.247
25610.7.79.248/2910.7.79.249 – 10.7.79.25410.7.79.255
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 →