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)10.6.64.0/21
network10.6.64.0/21
broadcast10.6.71.255
first host10.6.64.1
last host10.6.71.254
subnet mask255.255.248.0
wildcard0.0.7.255
addresses2,048
usable hosts2,046
classA
ipcalc 10.6.64.0/21
address00001010.00000110.01000000.00000000
subnet mask11111111.11111111.11111000.00000000
network00001010.00000110.01000000.00000000
broadcast00001010.00000110.01000111.11111111
green = network part, grey = host part
hex0x0a064000
decimal168181760
reverse dns0.64.6.10.in-addr.arpa
ipv4-mapped::ffff:a06:4000

/21 split into /29 · 256 subnets

close ×
#networkhost rangebroadcast
110.6.64.0/2910.6.64.1 – 10.6.64.610.6.64.7
210.6.64.8/2910.6.64.9 – 10.6.64.1410.6.64.15
310.6.64.16/2910.6.64.17 – 10.6.64.2210.6.64.23
410.6.64.24/2910.6.64.25 – 10.6.64.3010.6.64.31
510.6.64.32/2910.6.64.33 – 10.6.64.3810.6.64.39
610.6.64.40/2910.6.64.41 – 10.6.64.4610.6.64.47
710.6.64.48/2910.6.64.49 – 10.6.64.5410.6.64.55
810.6.64.56/2910.6.64.57 – 10.6.64.6210.6.64.63
910.6.64.64/2910.6.64.65 – 10.6.64.7010.6.64.71
1010.6.64.72/2910.6.64.73 – 10.6.64.7810.6.64.79
1110.6.64.80/2910.6.64.81 – 10.6.64.8610.6.64.87
1210.6.64.88/2910.6.64.89 – 10.6.64.9410.6.64.95
1310.6.64.96/2910.6.64.97 – 10.6.64.10210.6.64.103
1410.6.64.104/2910.6.64.105 – 10.6.64.11010.6.64.111
1510.6.64.112/2910.6.64.113 – 10.6.64.11810.6.64.119
1610.6.64.120/2910.6.64.121 – 10.6.64.12610.6.64.127
1710.6.64.128/2910.6.64.129 – 10.6.64.13410.6.64.135
1810.6.64.136/2910.6.64.137 – 10.6.64.14210.6.64.143
1910.6.64.144/2910.6.64.145 – 10.6.64.15010.6.64.151
2010.6.64.152/2910.6.64.153 – 10.6.64.15810.6.64.159
2110.6.64.160/2910.6.64.161 – 10.6.64.16610.6.64.167
2210.6.64.168/2910.6.64.169 – 10.6.64.17410.6.64.175
2310.6.64.176/2910.6.64.177 – 10.6.64.18210.6.64.183
2410.6.64.184/2910.6.64.185 – 10.6.64.19010.6.64.191
2510.6.64.192/2910.6.64.193 – 10.6.64.19810.6.64.199
2610.6.64.200/2910.6.64.201 – 10.6.64.20610.6.64.207
2710.6.64.208/2910.6.64.209 – 10.6.64.21410.6.64.215
2810.6.64.216/2910.6.64.217 – 10.6.64.22210.6.64.223
2910.6.64.224/2910.6.64.225 – 10.6.64.23010.6.64.231
3010.6.64.232/2910.6.64.233 – 10.6.64.23810.6.64.239
3110.6.64.240/2910.6.64.241 – 10.6.64.24610.6.64.247
3210.6.64.248/2910.6.64.249 – 10.6.64.25410.6.64.255
3310.6.65.0/2910.6.65.1 – 10.6.65.610.6.65.7
3410.6.65.8/2910.6.65.9 – 10.6.65.1410.6.65.15
3510.6.65.16/2910.6.65.17 – 10.6.65.2210.6.65.23
3610.6.65.24/2910.6.65.25 – 10.6.65.3010.6.65.31
3710.6.65.32/2910.6.65.33 – 10.6.65.3810.6.65.39
3810.6.65.40/2910.6.65.41 – 10.6.65.4610.6.65.47
3910.6.65.48/2910.6.65.49 – 10.6.65.5410.6.65.55
4010.6.65.56/2910.6.65.57 – 10.6.65.6210.6.65.63
4110.6.65.64/2910.6.65.65 – 10.6.65.7010.6.65.71
4210.6.65.72/2910.6.65.73 – 10.6.65.7810.6.65.79
4310.6.65.80/2910.6.65.81 – 10.6.65.8610.6.65.87
4410.6.65.88/2910.6.65.89 – 10.6.65.9410.6.65.95
4510.6.65.96/2910.6.65.97 – 10.6.65.10210.6.65.103
4610.6.65.104/2910.6.65.105 – 10.6.65.11010.6.65.111
4710.6.65.112/2910.6.65.113 – 10.6.65.11810.6.65.119
4810.6.65.120/2910.6.65.121 – 10.6.65.12610.6.65.127
4910.6.65.128/2910.6.65.129 – 10.6.65.13410.6.65.135
5010.6.65.136/2910.6.65.137 – 10.6.65.14210.6.65.143
5110.6.65.144/2910.6.65.145 – 10.6.65.15010.6.65.151
5210.6.65.152/2910.6.65.153 – 10.6.65.15810.6.65.159
5310.6.65.160/2910.6.65.161 – 10.6.65.16610.6.65.167
5410.6.65.168/2910.6.65.169 – 10.6.65.17410.6.65.175
5510.6.65.176/2910.6.65.177 – 10.6.65.18210.6.65.183
5610.6.65.184/2910.6.65.185 – 10.6.65.19010.6.65.191
5710.6.65.192/2910.6.65.193 – 10.6.65.19810.6.65.199
5810.6.65.200/2910.6.65.201 – 10.6.65.20610.6.65.207
5910.6.65.208/2910.6.65.209 – 10.6.65.21410.6.65.215
6010.6.65.216/2910.6.65.217 – 10.6.65.22210.6.65.223
6110.6.65.224/2910.6.65.225 – 10.6.65.23010.6.65.231
6210.6.65.232/2910.6.65.233 – 10.6.65.23810.6.65.239
6310.6.65.240/2910.6.65.241 – 10.6.65.24610.6.65.247
6410.6.65.248/2910.6.65.249 – 10.6.65.25410.6.65.255
6510.6.66.0/2910.6.66.1 – 10.6.66.610.6.66.7
6610.6.66.8/2910.6.66.9 – 10.6.66.1410.6.66.15
6710.6.66.16/2910.6.66.17 – 10.6.66.2210.6.66.23
6810.6.66.24/2910.6.66.25 – 10.6.66.3010.6.66.31
6910.6.66.32/2910.6.66.33 – 10.6.66.3810.6.66.39
7010.6.66.40/2910.6.66.41 – 10.6.66.4610.6.66.47
7110.6.66.48/2910.6.66.49 – 10.6.66.5410.6.66.55
7210.6.66.56/2910.6.66.57 – 10.6.66.6210.6.66.63
7310.6.66.64/2910.6.66.65 – 10.6.66.7010.6.66.71
7410.6.66.72/2910.6.66.73 – 10.6.66.7810.6.66.79
7510.6.66.80/2910.6.66.81 – 10.6.66.8610.6.66.87
7610.6.66.88/2910.6.66.89 – 10.6.66.9410.6.66.95
7710.6.66.96/2910.6.66.97 – 10.6.66.10210.6.66.103
7810.6.66.104/2910.6.66.105 – 10.6.66.11010.6.66.111
7910.6.66.112/2910.6.66.113 – 10.6.66.11810.6.66.119
8010.6.66.120/2910.6.66.121 – 10.6.66.12610.6.66.127
8110.6.66.128/2910.6.66.129 – 10.6.66.13410.6.66.135
8210.6.66.136/2910.6.66.137 – 10.6.66.14210.6.66.143
8310.6.66.144/2910.6.66.145 – 10.6.66.15010.6.66.151
8410.6.66.152/2910.6.66.153 – 10.6.66.15810.6.66.159
8510.6.66.160/2910.6.66.161 – 10.6.66.16610.6.66.167
8610.6.66.168/2910.6.66.169 – 10.6.66.17410.6.66.175
8710.6.66.176/2910.6.66.177 – 10.6.66.18210.6.66.183
8810.6.66.184/2910.6.66.185 – 10.6.66.19010.6.66.191
8910.6.66.192/2910.6.66.193 – 10.6.66.19810.6.66.199
9010.6.66.200/2910.6.66.201 – 10.6.66.20610.6.66.207
9110.6.66.208/2910.6.66.209 – 10.6.66.21410.6.66.215
9210.6.66.216/2910.6.66.217 – 10.6.66.22210.6.66.223
9310.6.66.224/2910.6.66.225 – 10.6.66.23010.6.66.231
9410.6.66.232/2910.6.66.233 – 10.6.66.23810.6.66.239
9510.6.66.240/2910.6.66.241 – 10.6.66.24610.6.66.247
9610.6.66.248/2910.6.66.249 – 10.6.66.25410.6.66.255
9710.6.67.0/2910.6.67.1 – 10.6.67.610.6.67.7
9810.6.67.8/2910.6.67.9 – 10.6.67.1410.6.67.15
9910.6.67.16/2910.6.67.17 – 10.6.67.2210.6.67.23
10010.6.67.24/2910.6.67.25 – 10.6.67.3010.6.67.31
10110.6.67.32/2910.6.67.33 – 10.6.67.3810.6.67.39
10210.6.67.40/2910.6.67.41 – 10.6.67.4610.6.67.47
10310.6.67.48/2910.6.67.49 – 10.6.67.5410.6.67.55
10410.6.67.56/2910.6.67.57 – 10.6.67.6210.6.67.63
10510.6.67.64/2910.6.67.65 – 10.6.67.7010.6.67.71
10610.6.67.72/2910.6.67.73 – 10.6.67.7810.6.67.79
10710.6.67.80/2910.6.67.81 – 10.6.67.8610.6.67.87
10810.6.67.88/2910.6.67.89 – 10.6.67.9410.6.67.95
10910.6.67.96/2910.6.67.97 – 10.6.67.10210.6.67.103
11010.6.67.104/2910.6.67.105 – 10.6.67.11010.6.67.111
11110.6.67.112/2910.6.67.113 – 10.6.67.11810.6.67.119
11210.6.67.120/2910.6.67.121 – 10.6.67.12610.6.67.127
11310.6.67.128/2910.6.67.129 – 10.6.67.13410.6.67.135
11410.6.67.136/2910.6.67.137 – 10.6.67.14210.6.67.143
11510.6.67.144/2910.6.67.145 – 10.6.67.15010.6.67.151
11610.6.67.152/2910.6.67.153 – 10.6.67.15810.6.67.159
11710.6.67.160/2910.6.67.161 – 10.6.67.16610.6.67.167
11810.6.67.168/2910.6.67.169 – 10.6.67.17410.6.67.175
11910.6.67.176/2910.6.67.177 – 10.6.67.18210.6.67.183
12010.6.67.184/2910.6.67.185 – 10.6.67.19010.6.67.191
12110.6.67.192/2910.6.67.193 – 10.6.67.19810.6.67.199
12210.6.67.200/2910.6.67.201 – 10.6.67.20610.6.67.207
12310.6.67.208/2910.6.67.209 – 10.6.67.21410.6.67.215
12410.6.67.216/2910.6.67.217 – 10.6.67.22210.6.67.223
12510.6.67.224/2910.6.67.225 – 10.6.67.23010.6.67.231
12610.6.67.232/2910.6.67.233 – 10.6.67.23810.6.67.239
12710.6.67.240/2910.6.67.241 – 10.6.67.24610.6.67.247
12810.6.67.248/2910.6.67.249 – 10.6.67.25410.6.67.255
12910.6.68.0/2910.6.68.1 – 10.6.68.610.6.68.7
13010.6.68.8/2910.6.68.9 – 10.6.68.1410.6.68.15
13110.6.68.16/2910.6.68.17 – 10.6.68.2210.6.68.23
13210.6.68.24/2910.6.68.25 – 10.6.68.3010.6.68.31
13310.6.68.32/2910.6.68.33 – 10.6.68.3810.6.68.39
13410.6.68.40/2910.6.68.41 – 10.6.68.4610.6.68.47
13510.6.68.48/2910.6.68.49 – 10.6.68.5410.6.68.55
13610.6.68.56/2910.6.68.57 – 10.6.68.6210.6.68.63
13710.6.68.64/2910.6.68.65 – 10.6.68.7010.6.68.71
13810.6.68.72/2910.6.68.73 – 10.6.68.7810.6.68.79
13910.6.68.80/2910.6.68.81 – 10.6.68.8610.6.68.87
14010.6.68.88/2910.6.68.89 – 10.6.68.9410.6.68.95
14110.6.68.96/2910.6.68.97 – 10.6.68.10210.6.68.103
14210.6.68.104/2910.6.68.105 – 10.6.68.11010.6.68.111
14310.6.68.112/2910.6.68.113 – 10.6.68.11810.6.68.119
14410.6.68.120/2910.6.68.121 – 10.6.68.12610.6.68.127
14510.6.68.128/2910.6.68.129 – 10.6.68.13410.6.68.135
14610.6.68.136/2910.6.68.137 – 10.6.68.14210.6.68.143
14710.6.68.144/2910.6.68.145 – 10.6.68.15010.6.68.151
14810.6.68.152/2910.6.68.153 – 10.6.68.15810.6.68.159
14910.6.68.160/2910.6.68.161 – 10.6.68.16610.6.68.167
15010.6.68.168/2910.6.68.169 – 10.6.68.17410.6.68.175
15110.6.68.176/2910.6.68.177 – 10.6.68.18210.6.68.183
15210.6.68.184/2910.6.68.185 – 10.6.68.19010.6.68.191
15310.6.68.192/2910.6.68.193 – 10.6.68.19810.6.68.199
15410.6.68.200/2910.6.68.201 – 10.6.68.20610.6.68.207
15510.6.68.208/2910.6.68.209 – 10.6.68.21410.6.68.215
15610.6.68.216/2910.6.68.217 – 10.6.68.22210.6.68.223
15710.6.68.224/2910.6.68.225 – 10.6.68.23010.6.68.231
15810.6.68.232/2910.6.68.233 – 10.6.68.23810.6.68.239
15910.6.68.240/2910.6.68.241 – 10.6.68.24610.6.68.247
16010.6.68.248/2910.6.68.249 – 10.6.68.25410.6.68.255
16110.6.69.0/2910.6.69.1 – 10.6.69.610.6.69.7
16210.6.69.8/2910.6.69.9 – 10.6.69.1410.6.69.15
16310.6.69.16/2910.6.69.17 – 10.6.69.2210.6.69.23
16410.6.69.24/2910.6.69.25 – 10.6.69.3010.6.69.31
16510.6.69.32/2910.6.69.33 – 10.6.69.3810.6.69.39
16610.6.69.40/2910.6.69.41 – 10.6.69.4610.6.69.47
16710.6.69.48/2910.6.69.49 – 10.6.69.5410.6.69.55
16810.6.69.56/2910.6.69.57 – 10.6.69.6210.6.69.63
16910.6.69.64/2910.6.69.65 – 10.6.69.7010.6.69.71
17010.6.69.72/2910.6.69.73 – 10.6.69.7810.6.69.79
17110.6.69.80/2910.6.69.81 – 10.6.69.8610.6.69.87
17210.6.69.88/2910.6.69.89 – 10.6.69.9410.6.69.95
17310.6.69.96/2910.6.69.97 – 10.6.69.10210.6.69.103
17410.6.69.104/2910.6.69.105 – 10.6.69.11010.6.69.111
17510.6.69.112/2910.6.69.113 – 10.6.69.11810.6.69.119
17610.6.69.120/2910.6.69.121 – 10.6.69.12610.6.69.127
17710.6.69.128/2910.6.69.129 – 10.6.69.13410.6.69.135
17810.6.69.136/2910.6.69.137 – 10.6.69.14210.6.69.143
17910.6.69.144/2910.6.69.145 – 10.6.69.15010.6.69.151
18010.6.69.152/2910.6.69.153 – 10.6.69.15810.6.69.159
18110.6.69.160/2910.6.69.161 – 10.6.69.16610.6.69.167
18210.6.69.168/2910.6.69.169 – 10.6.69.17410.6.69.175
18310.6.69.176/2910.6.69.177 – 10.6.69.18210.6.69.183
18410.6.69.184/2910.6.69.185 – 10.6.69.19010.6.69.191
18510.6.69.192/2910.6.69.193 – 10.6.69.19810.6.69.199
18610.6.69.200/2910.6.69.201 – 10.6.69.20610.6.69.207
18710.6.69.208/2910.6.69.209 – 10.6.69.21410.6.69.215
18810.6.69.216/2910.6.69.217 – 10.6.69.22210.6.69.223
18910.6.69.224/2910.6.69.225 – 10.6.69.23010.6.69.231
19010.6.69.232/2910.6.69.233 – 10.6.69.23810.6.69.239
19110.6.69.240/2910.6.69.241 – 10.6.69.24610.6.69.247
19210.6.69.248/2910.6.69.249 – 10.6.69.25410.6.69.255
19310.6.70.0/2910.6.70.1 – 10.6.70.610.6.70.7
19410.6.70.8/2910.6.70.9 – 10.6.70.1410.6.70.15
19510.6.70.16/2910.6.70.17 – 10.6.70.2210.6.70.23
19610.6.70.24/2910.6.70.25 – 10.6.70.3010.6.70.31
19710.6.70.32/2910.6.70.33 – 10.6.70.3810.6.70.39
19810.6.70.40/2910.6.70.41 – 10.6.70.4610.6.70.47
19910.6.70.48/2910.6.70.49 – 10.6.70.5410.6.70.55
20010.6.70.56/2910.6.70.57 – 10.6.70.6210.6.70.63
20110.6.70.64/2910.6.70.65 – 10.6.70.7010.6.70.71
20210.6.70.72/2910.6.70.73 – 10.6.70.7810.6.70.79
20310.6.70.80/2910.6.70.81 – 10.6.70.8610.6.70.87
20410.6.70.88/2910.6.70.89 – 10.6.70.9410.6.70.95
20510.6.70.96/2910.6.70.97 – 10.6.70.10210.6.70.103
20610.6.70.104/2910.6.70.105 – 10.6.70.11010.6.70.111
20710.6.70.112/2910.6.70.113 – 10.6.70.11810.6.70.119
20810.6.70.120/2910.6.70.121 – 10.6.70.12610.6.70.127
20910.6.70.128/2910.6.70.129 – 10.6.70.13410.6.70.135
21010.6.70.136/2910.6.70.137 – 10.6.70.14210.6.70.143
21110.6.70.144/2910.6.70.145 – 10.6.70.15010.6.70.151
21210.6.70.152/2910.6.70.153 – 10.6.70.15810.6.70.159
21310.6.70.160/2910.6.70.161 – 10.6.70.16610.6.70.167
21410.6.70.168/2910.6.70.169 – 10.6.70.17410.6.70.175
21510.6.70.176/2910.6.70.177 – 10.6.70.18210.6.70.183
21610.6.70.184/2910.6.70.185 – 10.6.70.19010.6.70.191
21710.6.70.192/2910.6.70.193 – 10.6.70.19810.6.70.199
21810.6.70.200/2910.6.70.201 – 10.6.70.20610.6.70.207
21910.6.70.208/2910.6.70.209 – 10.6.70.21410.6.70.215
22010.6.70.216/2910.6.70.217 – 10.6.70.22210.6.70.223
22110.6.70.224/2910.6.70.225 – 10.6.70.23010.6.70.231
22210.6.70.232/2910.6.70.233 – 10.6.70.23810.6.70.239
22310.6.70.240/2910.6.70.241 – 10.6.70.24610.6.70.247
22410.6.70.248/2910.6.70.249 – 10.6.70.25410.6.70.255
22510.6.71.0/2910.6.71.1 – 10.6.71.610.6.71.7
22610.6.71.8/2910.6.71.9 – 10.6.71.1410.6.71.15
22710.6.71.16/2910.6.71.17 – 10.6.71.2210.6.71.23
22810.6.71.24/2910.6.71.25 – 10.6.71.3010.6.71.31
22910.6.71.32/2910.6.71.33 – 10.6.71.3810.6.71.39
23010.6.71.40/2910.6.71.41 – 10.6.71.4610.6.71.47
23110.6.71.48/2910.6.71.49 – 10.6.71.5410.6.71.55
23210.6.71.56/2910.6.71.57 – 10.6.71.6210.6.71.63
23310.6.71.64/2910.6.71.65 – 10.6.71.7010.6.71.71
23410.6.71.72/2910.6.71.73 – 10.6.71.7810.6.71.79
23510.6.71.80/2910.6.71.81 – 10.6.71.8610.6.71.87
23610.6.71.88/2910.6.71.89 – 10.6.71.9410.6.71.95
23710.6.71.96/2910.6.71.97 – 10.6.71.10210.6.71.103
23810.6.71.104/2910.6.71.105 – 10.6.71.11010.6.71.111
23910.6.71.112/2910.6.71.113 – 10.6.71.11810.6.71.119
24010.6.71.120/2910.6.71.121 – 10.6.71.12610.6.71.127
24110.6.71.128/2910.6.71.129 – 10.6.71.13410.6.71.135
24210.6.71.136/2910.6.71.137 – 10.6.71.14210.6.71.143
24310.6.71.144/2910.6.71.145 – 10.6.71.15010.6.71.151
24410.6.71.152/2910.6.71.153 – 10.6.71.15810.6.71.159
24510.6.71.160/2910.6.71.161 – 10.6.71.16610.6.71.167
24610.6.71.168/2910.6.71.169 – 10.6.71.17410.6.71.175
24710.6.71.176/2910.6.71.177 – 10.6.71.18210.6.71.183
24810.6.71.184/2910.6.71.185 – 10.6.71.19010.6.71.191
24910.6.71.192/2910.6.71.193 – 10.6.71.19810.6.71.199
25010.6.71.200/2910.6.71.201 – 10.6.71.20610.6.71.207
25110.6.71.208/2910.6.71.209 – 10.6.71.21410.6.71.215
25210.6.71.216/2910.6.71.217 – 10.6.71.22210.6.71.223
25310.6.71.224/2910.6.71.225 – 10.6.71.23010.6.71.231
25410.6.71.232/2910.6.71.233 – 10.6.71.23810.6.71.239
25510.6.71.240/2910.6.71.241 – 10.6.71.24610.6.71.247
25610.6.71.248/2910.6.71.249 – 10.6.71.25410.6.71.255
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 →