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)10.7.88.0/21
network10.7.88.0/21
broadcast10.7.95.255
first host10.7.88.1
last host10.7.95.254
subnet mask255.255.248.0
wildcard0.0.7.255
addresses2,048
usable hosts2,046
classA
ipcalc 10.7.88.0/21
address00001010.00000111.01011000.00000000
subnet mask11111111.11111111.11111000.00000000
network00001010.00000111.01011000.00000000
broadcast00001010.00000111.01011111.11111111
green = network part, grey = host part
hex0x0a075800
decimal168253440
reverse dns0.88.7.10.in-addr.arpa
ipv4-mapped::ffff:a07:5800

/21 split into /29 · 256 subnets

close ×
#networkhost rangebroadcast
110.7.88.0/2910.7.88.1 – 10.7.88.610.7.88.7
210.7.88.8/2910.7.88.9 – 10.7.88.1410.7.88.15
310.7.88.16/2910.7.88.17 – 10.7.88.2210.7.88.23
410.7.88.24/2910.7.88.25 – 10.7.88.3010.7.88.31
510.7.88.32/2910.7.88.33 – 10.7.88.3810.7.88.39
610.7.88.40/2910.7.88.41 – 10.7.88.4610.7.88.47
710.7.88.48/2910.7.88.49 – 10.7.88.5410.7.88.55
810.7.88.56/2910.7.88.57 – 10.7.88.6210.7.88.63
910.7.88.64/2910.7.88.65 – 10.7.88.7010.7.88.71
1010.7.88.72/2910.7.88.73 – 10.7.88.7810.7.88.79
1110.7.88.80/2910.7.88.81 – 10.7.88.8610.7.88.87
1210.7.88.88/2910.7.88.89 – 10.7.88.9410.7.88.95
1310.7.88.96/2910.7.88.97 – 10.7.88.10210.7.88.103
1410.7.88.104/2910.7.88.105 – 10.7.88.11010.7.88.111
1510.7.88.112/2910.7.88.113 – 10.7.88.11810.7.88.119
1610.7.88.120/2910.7.88.121 – 10.7.88.12610.7.88.127
1710.7.88.128/2910.7.88.129 – 10.7.88.13410.7.88.135
1810.7.88.136/2910.7.88.137 – 10.7.88.14210.7.88.143
1910.7.88.144/2910.7.88.145 – 10.7.88.15010.7.88.151
2010.7.88.152/2910.7.88.153 – 10.7.88.15810.7.88.159
2110.7.88.160/2910.7.88.161 – 10.7.88.16610.7.88.167
2210.7.88.168/2910.7.88.169 – 10.7.88.17410.7.88.175
2310.7.88.176/2910.7.88.177 – 10.7.88.18210.7.88.183
2410.7.88.184/2910.7.88.185 – 10.7.88.19010.7.88.191
2510.7.88.192/2910.7.88.193 – 10.7.88.19810.7.88.199
2610.7.88.200/2910.7.88.201 – 10.7.88.20610.7.88.207
2710.7.88.208/2910.7.88.209 – 10.7.88.21410.7.88.215
2810.7.88.216/2910.7.88.217 – 10.7.88.22210.7.88.223
2910.7.88.224/2910.7.88.225 – 10.7.88.23010.7.88.231
3010.7.88.232/2910.7.88.233 – 10.7.88.23810.7.88.239
3110.7.88.240/2910.7.88.241 – 10.7.88.24610.7.88.247
3210.7.88.248/2910.7.88.249 – 10.7.88.25410.7.88.255
3310.7.89.0/2910.7.89.1 – 10.7.89.610.7.89.7
3410.7.89.8/2910.7.89.9 – 10.7.89.1410.7.89.15
3510.7.89.16/2910.7.89.17 – 10.7.89.2210.7.89.23
3610.7.89.24/2910.7.89.25 – 10.7.89.3010.7.89.31
3710.7.89.32/2910.7.89.33 – 10.7.89.3810.7.89.39
3810.7.89.40/2910.7.89.41 – 10.7.89.4610.7.89.47
3910.7.89.48/2910.7.89.49 – 10.7.89.5410.7.89.55
4010.7.89.56/2910.7.89.57 – 10.7.89.6210.7.89.63
4110.7.89.64/2910.7.89.65 – 10.7.89.7010.7.89.71
4210.7.89.72/2910.7.89.73 – 10.7.89.7810.7.89.79
4310.7.89.80/2910.7.89.81 – 10.7.89.8610.7.89.87
4410.7.89.88/2910.7.89.89 – 10.7.89.9410.7.89.95
4510.7.89.96/2910.7.89.97 – 10.7.89.10210.7.89.103
4610.7.89.104/2910.7.89.105 – 10.7.89.11010.7.89.111
4710.7.89.112/2910.7.89.113 – 10.7.89.11810.7.89.119
4810.7.89.120/2910.7.89.121 – 10.7.89.12610.7.89.127
4910.7.89.128/2910.7.89.129 – 10.7.89.13410.7.89.135
5010.7.89.136/2910.7.89.137 – 10.7.89.14210.7.89.143
5110.7.89.144/2910.7.89.145 – 10.7.89.15010.7.89.151
5210.7.89.152/2910.7.89.153 – 10.7.89.15810.7.89.159
5310.7.89.160/2910.7.89.161 – 10.7.89.16610.7.89.167
5410.7.89.168/2910.7.89.169 – 10.7.89.17410.7.89.175
5510.7.89.176/2910.7.89.177 – 10.7.89.18210.7.89.183
5610.7.89.184/2910.7.89.185 – 10.7.89.19010.7.89.191
5710.7.89.192/2910.7.89.193 – 10.7.89.19810.7.89.199
5810.7.89.200/2910.7.89.201 – 10.7.89.20610.7.89.207
5910.7.89.208/2910.7.89.209 – 10.7.89.21410.7.89.215
6010.7.89.216/2910.7.89.217 – 10.7.89.22210.7.89.223
6110.7.89.224/2910.7.89.225 – 10.7.89.23010.7.89.231
6210.7.89.232/2910.7.89.233 – 10.7.89.23810.7.89.239
6310.7.89.240/2910.7.89.241 – 10.7.89.24610.7.89.247
6410.7.89.248/2910.7.89.249 – 10.7.89.25410.7.89.255
6510.7.90.0/2910.7.90.1 – 10.7.90.610.7.90.7
6610.7.90.8/2910.7.90.9 – 10.7.90.1410.7.90.15
6710.7.90.16/2910.7.90.17 – 10.7.90.2210.7.90.23
6810.7.90.24/2910.7.90.25 – 10.7.90.3010.7.90.31
6910.7.90.32/2910.7.90.33 – 10.7.90.3810.7.90.39
7010.7.90.40/2910.7.90.41 – 10.7.90.4610.7.90.47
7110.7.90.48/2910.7.90.49 – 10.7.90.5410.7.90.55
7210.7.90.56/2910.7.90.57 – 10.7.90.6210.7.90.63
7310.7.90.64/2910.7.90.65 – 10.7.90.7010.7.90.71
7410.7.90.72/2910.7.90.73 – 10.7.90.7810.7.90.79
7510.7.90.80/2910.7.90.81 – 10.7.90.8610.7.90.87
7610.7.90.88/2910.7.90.89 – 10.7.90.9410.7.90.95
7710.7.90.96/2910.7.90.97 – 10.7.90.10210.7.90.103
7810.7.90.104/2910.7.90.105 – 10.7.90.11010.7.90.111
7910.7.90.112/2910.7.90.113 – 10.7.90.11810.7.90.119
8010.7.90.120/2910.7.90.121 – 10.7.90.12610.7.90.127
8110.7.90.128/2910.7.90.129 – 10.7.90.13410.7.90.135
8210.7.90.136/2910.7.90.137 – 10.7.90.14210.7.90.143
8310.7.90.144/2910.7.90.145 – 10.7.90.15010.7.90.151
8410.7.90.152/2910.7.90.153 – 10.7.90.15810.7.90.159
8510.7.90.160/2910.7.90.161 – 10.7.90.16610.7.90.167
8610.7.90.168/2910.7.90.169 – 10.7.90.17410.7.90.175
8710.7.90.176/2910.7.90.177 – 10.7.90.18210.7.90.183
8810.7.90.184/2910.7.90.185 – 10.7.90.19010.7.90.191
8910.7.90.192/2910.7.90.193 – 10.7.90.19810.7.90.199
9010.7.90.200/2910.7.90.201 – 10.7.90.20610.7.90.207
9110.7.90.208/2910.7.90.209 – 10.7.90.21410.7.90.215
9210.7.90.216/2910.7.90.217 – 10.7.90.22210.7.90.223
9310.7.90.224/2910.7.90.225 – 10.7.90.23010.7.90.231
9410.7.90.232/2910.7.90.233 – 10.7.90.23810.7.90.239
9510.7.90.240/2910.7.90.241 – 10.7.90.24610.7.90.247
9610.7.90.248/2910.7.90.249 – 10.7.90.25410.7.90.255
9710.7.91.0/2910.7.91.1 – 10.7.91.610.7.91.7
9810.7.91.8/2910.7.91.9 – 10.7.91.1410.7.91.15
9910.7.91.16/2910.7.91.17 – 10.7.91.2210.7.91.23
10010.7.91.24/2910.7.91.25 – 10.7.91.3010.7.91.31
10110.7.91.32/2910.7.91.33 – 10.7.91.3810.7.91.39
10210.7.91.40/2910.7.91.41 – 10.7.91.4610.7.91.47
10310.7.91.48/2910.7.91.49 – 10.7.91.5410.7.91.55
10410.7.91.56/2910.7.91.57 – 10.7.91.6210.7.91.63
10510.7.91.64/2910.7.91.65 – 10.7.91.7010.7.91.71
10610.7.91.72/2910.7.91.73 – 10.7.91.7810.7.91.79
10710.7.91.80/2910.7.91.81 – 10.7.91.8610.7.91.87
10810.7.91.88/2910.7.91.89 – 10.7.91.9410.7.91.95
10910.7.91.96/2910.7.91.97 – 10.7.91.10210.7.91.103
11010.7.91.104/2910.7.91.105 – 10.7.91.11010.7.91.111
11110.7.91.112/2910.7.91.113 – 10.7.91.11810.7.91.119
11210.7.91.120/2910.7.91.121 – 10.7.91.12610.7.91.127
11310.7.91.128/2910.7.91.129 – 10.7.91.13410.7.91.135
11410.7.91.136/2910.7.91.137 – 10.7.91.14210.7.91.143
11510.7.91.144/2910.7.91.145 – 10.7.91.15010.7.91.151
11610.7.91.152/2910.7.91.153 – 10.7.91.15810.7.91.159
11710.7.91.160/2910.7.91.161 – 10.7.91.16610.7.91.167
11810.7.91.168/2910.7.91.169 – 10.7.91.17410.7.91.175
11910.7.91.176/2910.7.91.177 – 10.7.91.18210.7.91.183
12010.7.91.184/2910.7.91.185 – 10.7.91.19010.7.91.191
12110.7.91.192/2910.7.91.193 – 10.7.91.19810.7.91.199
12210.7.91.200/2910.7.91.201 – 10.7.91.20610.7.91.207
12310.7.91.208/2910.7.91.209 – 10.7.91.21410.7.91.215
12410.7.91.216/2910.7.91.217 – 10.7.91.22210.7.91.223
12510.7.91.224/2910.7.91.225 – 10.7.91.23010.7.91.231
12610.7.91.232/2910.7.91.233 – 10.7.91.23810.7.91.239
12710.7.91.240/2910.7.91.241 – 10.7.91.24610.7.91.247
12810.7.91.248/2910.7.91.249 – 10.7.91.25410.7.91.255
12910.7.92.0/2910.7.92.1 – 10.7.92.610.7.92.7
13010.7.92.8/2910.7.92.9 – 10.7.92.1410.7.92.15
13110.7.92.16/2910.7.92.17 – 10.7.92.2210.7.92.23
13210.7.92.24/2910.7.92.25 – 10.7.92.3010.7.92.31
13310.7.92.32/2910.7.92.33 – 10.7.92.3810.7.92.39
13410.7.92.40/2910.7.92.41 – 10.7.92.4610.7.92.47
13510.7.92.48/2910.7.92.49 – 10.7.92.5410.7.92.55
13610.7.92.56/2910.7.92.57 – 10.7.92.6210.7.92.63
13710.7.92.64/2910.7.92.65 – 10.7.92.7010.7.92.71
13810.7.92.72/2910.7.92.73 – 10.7.92.7810.7.92.79
13910.7.92.80/2910.7.92.81 – 10.7.92.8610.7.92.87
14010.7.92.88/2910.7.92.89 – 10.7.92.9410.7.92.95
14110.7.92.96/2910.7.92.97 – 10.7.92.10210.7.92.103
14210.7.92.104/2910.7.92.105 – 10.7.92.11010.7.92.111
14310.7.92.112/2910.7.92.113 – 10.7.92.11810.7.92.119
14410.7.92.120/2910.7.92.121 – 10.7.92.12610.7.92.127
14510.7.92.128/2910.7.92.129 – 10.7.92.13410.7.92.135
14610.7.92.136/2910.7.92.137 – 10.7.92.14210.7.92.143
14710.7.92.144/2910.7.92.145 – 10.7.92.15010.7.92.151
14810.7.92.152/2910.7.92.153 – 10.7.92.15810.7.92.159
14910.7.92.160/2910.7.92.161 – 10.7.92.16610.7.92.167
15010.7.92.168/2910.7.92.169 – 10.7.92.17410.7.92.175
15110.7.92.176/2910.7.92.177 – 10.7.92.18210.7.92.183
15210.7.92.184/2910.7.92.185 – 10.7.92.19010.7.92.191
15310.7.92.192/2910.7.92.193 – 10.7.92.19810.7.92.199
15410.7.92.200/2910.7.92.201 – 10.7.92.20610.7.92.207
15510.7.92.208/2910.7.92.209 – 10.7.92.21410.7.92.215
15610.7.92.216/2910.7.92.217 – 10.7.92.22210.7.92.223
15710.7.92.224/2910.7.92.225 – 10.7.92.23010.7.92.231
15810.7.92.232/2910.7.92.233 – 10.7.92.23810.7.92.239
15910.7.92.240/2910.7.92.241 – 10.7.92.24610.7.92.247
16010.7.92.248/2910.7.92.249 – 10.7.92.25410.7.92.255
16110.7.93.0/2910.7.93.1 – 10.7.93.610.7.93.7
16210.7.93.8/2910.7.93.9 – 10.7.93.1410.7.93.15
16310.7.93.16/2910.7.93.17 – 10.7.93.2210.7.93.23
16410.7.93.24/2910.7.93.25 – 10.7.93.3010.7.93.31
16510.7.93.32/2910.7.93.33 – 10.7.93.3810.7.93.39
16610.7.93.40/2910.7.93.41 – 10.7.93.4610.7.93.47
16710.7.93.48/2910.7.93.49 – 10.7.93.5410.7.93.55
16810.7.93.56/2910.7.93.57 – 10.7.93.6210.7.93.63
16910.7.93.64/2910.7.93.65 – 10.7.93.7010.7.93.71
17010.7.93.72/2910.7.93.73 – 10.7.93.7810.7.93.79
17110.7.93.80/2910.7.93.81 – 10.7.93.8610.7.93.87
17210.7.93.88/2910.7.93.89 – 10.7.93.9410.7.93.95
17310.7.93.96/2910.7.93.97 – 10.7.93.10210.7.93.103
17410.7.93.104/2910.7.93.105 – 10.7.93.11010.7.93.111
17510.7.93.112/2910.7.93.113 – 10.7.93.11810.7.93.119
17610.7.93.120/2910.7.93.121 – 10.7.93.12610.7.93.127
17710.7.93.128/2910.7.93.129 – 10.7.93.13410.7.93.135
17810.7.93.136/2910.7.93.137 – 10.7.93.14210.7.93.143
17910.7.93.144/2910.7.93.145 – 10.7.93.15010.7.93.151
18010.7.93.152/2910.7.93.153 – 10.7.93.15810.7.93.159
18110.7.93.160/2910.7.93.161 – 10.7.93.16610.7.93.167
18210.7.93.168/2910.7.93.169 – 10.7.93.17410.7.93.175
18310.7.93.176/2910.7.93.177 – 10.7.93.18210.7.93.183
18410.7.93.184/2910.7.93.185 – 10.7.93.19010.7.93.191
18510.7.93.192/2910.7.93.193 – 10.7.93.19810.7.93.199
18610.7.93.200/2910.7.93.201 – 10.7.93.20610.7.93.207
18710.7.93.208/2910.7.93.209 – 10.7.93.21410.7.93.215
18810.7.93.216/2910.7.93.217 – 10.7.93.22210.7.93.223
18910.7.93.224/2910.7.93.225 – 10.7.93.23010.7.93.231
19010.7.93.232/2910.7.93.233 – 10.7.93.23810.7.93.239
19110.7.93.240/2910.7.93.241 – 10.7.93.24610.7.93.247
19210.7.93.248/2910.7.93.249 – 10.7.93.25410.7.93.255
19310.7.94.0/2910.7.94.1 – 10.7.94.610.7.94.7
19410.7.94.8/2910.7.94.9 – 10.7.94.1410.7.94.15
19510.7.94.16/2910.7.94.17 – 10.7.94.2210.7.94.23
19610.7.94.24/2910.7.94.25 – 10.7.94.3010.7.94.31
19710.7.94.32/2910.7.94.33 – 10.7.94.3810.7.94.39
19810.7.94.40/2910.7.94.41 – 10.7.94.4610.7.94.47
19910.7.94.48/2910.7.94.49 – 10.7.94.5410.7.94.55
20010.7.94.56/2910.7.94.57 – 10.7.94.6210.7.94.63
20110.7.94.64/2910.7.94.65 – 10.7.94.7010.7.94.71
20210.7.94.72/2910.7.94.73 – 10.7.94.7810.7.94.79
20310.7.94.80/2910.7.94.81 – 10.7.94.8610.7.94.87
20410.7.94.88/2910.7.94.89 – 10.7.94.9410.7.94.95
20510.7.94.96/2910.7.94.97 – 10.7.94.10210.7.94.103
20610.7.94.104/2910.7.94.105 – 10.7.94.11010.7.94.111
20710.7.94.112/2910.7.94.113 – 10.7.94.11810.7.94.119
20810.7.94.120/2910.7.94.121 – 10.7.94.12610.7.94.127
20910.7.94.128/2910.7.94.129 – 10.7.94.13410.7.94.135
21010.7.94.136/2910.7.94.137 – 10.7.94.14210.7.94.143
21110.7.94.144/2910.7.94.145 – 10.7.94.15010.7.94.151
21210.7.94.152/2910.7.94.153 – 10.7.94.15810.7.94.159
21310.7.94.160/2910.7.94.161 – 10.7.94.16610.7.94.167
21410.7.94.168/2910.7.94.169 – 10.7.94.17410.7.94.175
21510.7.94.176/2910.7.94.177 – 10.7.94.18210.7.94.183
21610.7.94.184/2910.7.94.185 – 10.7.94.19010.7.94.191
21710.7.94.192/2910.7.94.193 – 10.7.94.19810.7.94.199
21810.7.94.200/2910.7.94.201 – 10.7.94.20610.7.94.207
21910.7.94.208/2910.7.94.209 – 10.7.94.21410.7.94.215
22010.7.94.216/2910.7.94.217 – 10.7.94.22210.7.94.223
22110.7.94.224/2910.7.94.225 – 10.7.94.23010.7.94.231
22210.7.94.232/2910.7.94.233 – 10.7.94.23810.7.94.239
22310.7.94.240/2910.7.94.241 – 10.7.94.24610.7.94.247
22410.7.94.248/2910.7.94.249 – 10.7.94.25410.7.94.255
22510.7.95.0/2910.7.95.1 – 10.7.95.610.7.95.7
22610.7.95.8/2910.7.95.9 – 10.7.95.1410.7.95.15
22710.7.95.16/2910.7.95.17 – 10.7.95.2210.7.95.23
22810.7.95.24/2910.7.95.25 – 10.7.95.3010.7.95.31
22910.7.95.32/2910.7.95.33 – 10.7.95.3810.7.95.39
23010.7.95.40/2910.7.95.41 – 10.7.95.4610.7.95.47
23110.7.95.48/2910.7.95.49 – 10.7.95.5410.7.95.55
23210.7.95.56/2910.7.95.57 – 10.7.95.6210.7.95.63
23310.7.95.64/2910.7.95.65 – 10.7.95.7010.7.95.71
23410.7.95.72/2910.7.95.73 – 10.7.95.7810.7.95.79
23510.7.95.80/2910.7.95.81 – 10.7.95.8610.7.95.87
23610.7.95.88/2910.7.95.89 – 10.7.95.9410.7.95.95
23710.7.95.96/2910.7.95.97 – 10.7.95.10210.7.95.103
23810.7.95.104/2910.7.95.105 – 10.7.95.11010.7.95.111
23910.7.95.112/2910.7.95.113 – 10.7.95.11810.7.95.119
24010.7.95.120/2910.7.95.121 – 10.7.95.12610.7.95.127
24110.7.95.128/2910.7.95.129 – 10.7.95.13410.7.95.135
24210.7.95.136/2910.7.95.137 – 10.7.95.14210.7.95.143
24310.7.95.144/2910.7.95.145 – 10.7.95.15010.7.95.151
24410.7.95.152/2910.7.95.153 – 10.7.95.15810.7.95.159
24510.7.95.160/2910.7.95.161 – 10.7.95.16610.7.95.167
24610.7.95.168/2910.7.95.169 – 10.7.95.17410.7.95.175
24710.7.95.176/2910.7.95.177 – 10.7.95.18210.7.95.183
24810.7.95.184/2910.7.95.185 – 10.7.95.19010.7.95.191
24910.7.95.192/2910.7.95.193 – 10.7.95.19810.7.95.199
25010.7.95.200/2910.7.95.201 – 10.7.95.20610.7.95.207
25110.7.95.208/2910.7.95.209 – 10.7.95.21410.7.95.215
25210.7.95.216/2910.7.95.217 – 10.7.95.22210.7.95.223
25310.7.95.224/2910.7.95.225 – 10.7.95.23010.7.95.231
25410.7.95.232/2910.7.95.233 – 10.7.95.23810.7.95.239
25510.7.95.240/2910.7.95.241 – 10.7.95.24610.7.95.247
25610.7.95.248/2910.7.95.249 – 10.7.95.25410.7.95.255
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 →