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)10.4.224.0/21
network10.4.224.0/21
broadcast10.4.231.255
first host10.4.224.1
last host10.4.231.254
subnet mask255.255.248.0
wildcard0.0.7.255
addresses2,048
usable hosts2,046
classA
ipcalc 10.4.224.0/21
address00001010.00000100.11100000.00000000
subnet mask11111111.11111111.11111000.00000000
network00001010.00000100.11100000.00000000
broadcast00001010.00000100.11100111.11111111
green = network part, grey = host part
hex0x0a04e000
decimal168091648
reverse dns0.224.4.10.in-addr.arpa
ipv4-mapped::ffff:a04:e000

/21 split into /29 · 256 subnets

close ×
#networkhost rangebroadcast
110.4.224.0/2910.4.224.1 – 10.4.224.610.4.224.7
210.4.224.8/2910.4.224.9 – 10.4.224.1410.4.224.15
310.4.224.16/2910.4.224.17 – 10.4.224.2210.4.224.23
410.4.224.24/2910.4.224.25 – 10.4.224.3010.4.224.31
510.4.224.32/2910.4.224.33 – 10.4.224.3810.4.224.39
610.4.224.40/2910.4.224.41 – 10.4.224.4610.4.224.47
710.4.224.48/2910.4.224.49 – 10.4.224.5410.4.224.55
810.4.224.56/2910.4.224.57 – 10.4.224.6210.4.224.63
910.4.224.64/2910.4.224.65 – 10.4.224.7010.4.224.71
1010.4.224.72/2910.4.224.73 – 10.4.224.7810.4.224.79
1110.4.224.80/2910.4.224.81 – 10.4.224.8610.4.224.87
1210.4.224.88/2910.4.224.89 – 10.4.224.9410.4.224.95
1310.4.224.96/2910.4.224.97 – 10.4.224.10210.4.224.103
1410.4.224.104/2910.4.224.105 – 10.4.224.11010.4.224.111
1510.4.224.112/2910.4.224.113 – 10.4.224.11810.4.224.119
1610.4.224.120/2910.4.224.121 – 10.4.224.12610.4.224.127
1710.4.224.128/2910.4.224.129 – 10.4.224.13410.4.224.135
1810.4.224.136/2910.4.224.137 – 10.4.224.14210.4.224.143
1910.4.224.144/2910.4.224.145 – 10.4.224.15010.4.224.151
2010.4.224.152/2910.4.224.153 – 10.4.224.15810.4.224.159
2110.4.224.160/2910.4.224.161 – 10.4.224.16610.4.224.167
2210.4.224.168/2910.4.224.169 – 10.4.224.17410.4.224.175
2310.4.224.176/2910.4.224.177 – 10.4.224.18210.4.224.183
2410.4.224.184/2910.4.224.185 – 10.4.224.19010.4.224.191
2510.4.224.192/2910.4.224.193 – 10.4.224.19810.4.224.199
2610.4.224.200/2910.4.224.201 – 10.4.224.20610.4.224.207
2710.4.224.208/2910.4.224.209 – 10.4.224.21410.4.224.215
2810.4.224.216/2910.4.224.217 – 10.4.224.22210.4.224.223
2910.4.224.224/2910.4.224.225 – 10.4.224.23010.4.224.231
3010.4.224.232/2910.4.224.233 – 10.4.224.23810.4.224.239
3110.4.224.240/2910.4.224.241 – 10.4.224.24610.4.224.247
3210.4.224.248/2910.4.224.249 – 10.4.224.25410.4.224.255
3310.4.225.0/2910.4.225.1 – 10.4.225.610.4.225.7
3410.4.225.8/2910.4.225.9 – 10.4.225.1410.4.225.15
3510.4.225.16/2910.4.225.17 – 10.4.225.2210.4.225.23
3610.4.225.24/2910.4.225.25 – 10.4.225.3010.4.225.31
3710.4.225.32/2910.4.225.33 – 10.4.225.3810.4.225.39
3810.4.225.40/2910.4.225.41 – 10.4.225.4610.4.225.47
3910.4.225.48/2910.4.225.49 – 10.4.225.5410.4.225.55
4010.4.225.56/2910.4.225.57 – 10.4.225.6210.4.225.63
4110.4.225.64/2910.4.225.65 – 10.4.225.7010.4.225.71
4210.4.225.72/2910.4.225.73 – 10.4.225.7810.4.225.79
4310.4.225.80/2910.4.225.81 – 10.4.225.8610.4.225.87
4410.4.225.88/2910.4.225.89 – 10.4.225.9410.4.225.95
4510.4.225.96/2910.4.225.97 – 10.4.225.10210.4.225.103
4610.4.225.104/2910.4.225.105 – 10.4.225.11010.4.225.111
4710.4.225.112/2910.4.225.113 – 10.4.225.11810.4.225.119
4810.4.225.120/2910.4.225.121 – 10.4.225.12610.4.225.127
4910.4.225.128/2910.4.225.129 – 10.4.225.13410.4.225.135
5010.4.225.136/2910.4.225.137 – 10.4.225.14210.4.225.143
5110.4.225.144/2910.4.225.145 – 10.4.225.15010.4.225.151
5210.4.225.152/2910.4.225.153 – 10.4.225.15810.4.225.159
5310.4.225.160/2910.4.225.161 – 10.4.225.16610.4.225.167
5410.4.225.168/2910.4.225.169 – 10.4.225.17410.4.225.175
5510.4.225.176/2910.4.225.177 – 10.4.225.18210.4.225.183
5610.4.225.184/2910.4.225.185 – 10.4.225.19010.4.225.191
5710.4.225.192/2910.4.225.193 – 10.4.225.19810.4.225.199
5810.4.225.200/2910.4.225.201 – 10.4.225.20610.4.225.207
5910.4.225.208/2910.4.225.209 – 10.4.225.21410.4.225.215
6010.4.225.216/2910.4.225.217 – 10.4.225.22210.4.225.223
6110.4.225.224/2910.4.225.225 – 10.4.225.23010.4.225.231
6210.4.225.232/2910.4.225.233 – 10.4.225.23810.4.225.239
6310.4.225.240/2910.4.225.241 – 10.4.225.24610.4.225.247
6410.4.225.248/2910.4.225.249 – 10.4.225.25410.4.225.255
6510.4.226.0/2910.4.226.1 – 10.4.226.610.4.226.7
6610.4.226.8/2910.4.226.9 – 10.4.226.1410.4.226.15
6710.4.226.16/2910.4.226.17 – 10.4.226.2210.4.226.23
6810.4.226.24/2910.4.226.25 – 10.4.226.3010.4.226.31
6910.4.226.32/2910.4.226.33 – 10.4.226.3810.4.226.39
7010.4.226.40/2910.4.226.41 – 10.4.226.4610.4.226.47
7110.4.226.48/2910.4.226.49 – 10.4.226.5410.4.226.55
7210.4.226.56/2910.4.226.57 – 10.4.226.6210.4.226.63
7310.4.226.64/2910.4.226.65 – 10.4.226.7010.4.226.71
7410.4.226.72/2910.4.226.73 – 10.4.226.7810.4.226.79
7510.4.226.80/2910.4.226.81 – 10.4.226.8610.4.226.87
7610.4.226.88/2910.4.226.89 – 10.4.226.9410.4.226.95
7710.4.226.96/2910.4.226.97 – 10.4.226.10210.4.226.103
7810.4.226.104/2910.4.226.105 – 10.4.226.11010.4.226.111
7910.4.226.112/2910.4.226.113 – 10.4.226.11810.4.226.119
8010.4.226.120/2910.4.226.121 – 10.4.226.12610.4.226.127
8110.4.226.128/2910.4.226.129 – 10.4.226.13410.4.226.135
8210.4.226.136/2910.4.226.137 – 10.4.226.14210.4.226.143
8310.4.226.144/2910.4.226.145 – 10.4.226.15010.4.226.151
8410.4.226.152/2910.4.226.153 – 10.4.226.15810.4.226.159
8510.4.226.160/2910.4.226.161 – 10.4.226.16610.4.226.167
8610.4.226.168/2910.4.226.169 – 10.4.226.17410.4.226.175
8710.4.226.176/2910.4.226.177 – 10.4.226.18210.4.226.183
8810.4.226.184/2910.4.226.185 – 10.4.226.19010.4.226.191
8910.4.226.192/2910.4.226.193 – 10.4.226.19810.4.226.199
9010.4.226.200/2910.4.226.201 – 10.4.226.20610.4.226.207
9110.4.226.208/2910.4.226.209 – 10.4.226.21410.4.226.215
9210.4.226.216/2910.4.226.217 – 10.4.226.22210.4.226.223
9310.4.226.224/2910.4.226.225 – 10.4.226.23010.4.226.231
9410.4.226.232/2910.4.226.233 – 10.4.226.23810.4.226.239
9510.4.226.240/2910.4.226.241 – 10.4.226.24610.4.226.247
9610.4.226.248/2910.4.226.249 – 10.4.226.25410.4.226.255
9710.4.227.0/2910.4.227.1 – 10.4.227.610.4.227.7
9810.4.227.8/2910.4.227.9 – 10.4.227.1410.4.227.15
9910.4.227.16/2910.4.227.17 – 10.4.227.2210.4.227.23
10010.4.227.24/2910.4.227.25 – 10.4.227.3010.4.227.31
10110.4.227.32/2910.4.227.33 – 10.4.227.3810.4.227.39
10210.4.227.40/2910.4.227.41 – 10.4.227.4610.4.227.47
10310.4.227.48/2910.4.227.49 – 10.4.227.5410.4.227.55
10410.4.227.56/2910.4.227.57 – 10.4.227.6210.4.227.63
10510.4.227.64/2910.4.227.65 – 10.4.227.7010.4.227.71
10610.4.227.72/2910.4.227.73 – 10.4.227.7810.4.227.79
10710.4.227.80/2910.4.227.81 – 10.4.227.8610.4.227.87
10810.4.227.88/2910.4.227.89 – 10.4.227.9410.4.227.95
10910.4.227.96/2910.4.227.97 – 10.4.227.10210.4.227.103
11010.4.227.104/2910.4.227.105 – 10.4.227.11010.4.227.111
11110.4.227.112/2910.4.227.113 – 10.4.227.11810.4.227.119
11210.4.227.120/2910.4.227.121 – 10.4.227.12610.4.227.127
11310.4.227.128/2910.4.227.129 – 10.4.227.13410.4.227.135
11410.4.227.136/2910.4.227.137 – 10.4.227.14210.4.227.143
11510.4.227.144/2910.4.227.145 – 10.4.227.15010.4.227.151
11610.4.227.152/2910.4.227.153 – 10.4.227.15810.4.227.159
11710.4.227.160/2910.4.227.161 – 10.4.227.16610.4.227.167
11810.4.227.168/2910.4.227.169 – 10.4.227.17410.4.227.175
11910.4.227.176/2910.4.227.177 – 10.4.227.18210.4.227.183
12010.4.227.184/2910.4.227.185 – 10.4.227.19010.4.227.191
12110.4.227.192/2910.4.227.193 – 10.4.227.19810.4.227.199
12210.4.227.200/2910.4.227.201 – 10.4.227.20610.4.227.207
12310.4.227.208/2910.4.227.209 – 10.4.227.21410.4.227.215
12410.4.227.216/2910.4.227.217 – 10.4.227.22210.4.227.223
12510.4.227.224/2910.4.227.225 – 10.4.227.23010.4.227.231
12610.4.227.232/2910.4.227.233 – 10.4.227.23810.4.227.239
12710.4.227.240/2910.4.227.241 – 10.4.227.24610.4.227.247
12810.4.227.248/2910.4.227.249 – 10.4.227.25410.4.227.255
12910.4.228.0/2910.4.228.1 – 10.4.228.610.4.228.7
13010.4.228.8/2910.4.228.9 – 10.4.228.1410.4.228.15
13110.4.228.16/2910.4.228.17 – 10.4.228.2210.4.228.23
13210.4.228.24/2910.4.228.25 – 10.4.228.3010.4.228.31
13310.4.228.32/2910.4.228.33 – 10.4.228.3810.4.228.39
13410.4.228.40/2910.4.228.41 – 10.4.228.4610.4.228.47
13510.4.228.48/2910.4.228.49 – 10.4.228.5410.4.228.55
13610.4.228.56/2910.4.228.57 – 10.4.228.6210.4.228.63
13710.4.228.64/2910.4.228.65 – 10.4.228.7010.4.228.71
13810.4.228.72/2910.4.228.73 – 10.4.228.7810.4.228.79
13910.4.228.80/2910.4.228.81 – 10.4.228.8610.4.228.87
14010.4.228.88/2910.4.228.89 – 10.4.228.9410.4.228.95
14110.4.228.96/2910.4.228.97 – 10.4.228.10210.4.228.103
14210.4.228.104/2910.4.228.105 – 10.4.228.11010.4.228.111
14310.4.228.112/2910.4.228.113 – 10.4.228.11810.4.228.119
14410.4.228.120/2910.4.228.121 – 10.4.228.12610.4.228.127
14510.4.228.128/2910.4.228.129 – 10.4.228.13410.4.228.135
14610.4.228.136/2910.4.228.137 – 10.4.228.14210.4.228.143
14710.4.228.144/2910.4.228.145 – 10.4.228.15010.4.228.151
14810.4.228.152/2910.4.228.153 – 10.4.228.15810.4.228.159
14910.4.228.160/2910.4.228.161 – 10.4.228.16610.4.228.167
15010.4.228.168/2910.4.228.169 – 10.4.228.17410.4.228.175
15110.4.228.176/2910.4.228.177 – 10.4.228.18210.4.228.183
15210.4.228.184/2910.4.228.185 – 10.4.228.19010.4.228.191
15310.4.228.192/2910.4.228.193 – 10.4.228.19810.4.228.199
15410.4.228.200/2910.4.228.201 – 10.4.228.20610.4.228.207
15510.4.228.208/2910.4.228.209 – 10.4.228.21410.4.228.215
15610.4.228.216/2910.4.228.217 – 10.4.228.22210.4.228.223
15710.4.228.224/2910.4.228.225 – 10.4.228.23010.4.228.231
15810.4.228.232/2910.4.228.233 – 10.4.228.23810.4.228.239
15910.4.228.240/2910.4.228.241 – 10.4.228.24610.4.228.247
16010.4.228.248/2910.4.228.249 – 10.4.228.25410.4.228.255
16110.4.229.0/2910.4.229.1 – 10.4.229.610.4.229.7
16210.4.229.8/2910.4.229.9 – 10.4.229.1410.4.229.15
16310.4.229.16/2910.4.229.17 – 10.4.229.2210.4.229.23
16410.4.229.24/2910.4.229.25 – 10.4.229.3010.4.229.31
16510.4.229.32/2910.4.229.33 – 10.4.229.3810.4.229.39
16610.4.229.40/2910.4.229.41 – 10.4.229.4610.4.229.47
16710.4.229.48/2910.4.229.49 – 10.4.229.5410.4.229.55
16810.4.229.56/2910.4.229.57 – 10.4.229.6210.4.229.63
16910.4.229.64/2910.4.229.65 – 10.4.229.7010.4.229.71
17010.4.229.72/2910.4.229.73 – 10.4.229.7810.4.229.79
17110.4.229.80/2910.4.229.81 – 10.4.229.8610.4.229.87
17210.4.229.88/2910.4.229.89 – 10.4.229.9410.4.229.95
17310.4.229.96/2910.4.229.97 – 10.4.229.10210.4.229.103
17410.4.229.104/2910.4.229.105 – 10.4.229.11010.4.229.111
17510.4.229.112/2910.4.229.113 – 10.4.229.11810.4.229.119
17610.4.229.120/2910.4.229.121 – 10.4.229.12610.4.229.127
17710.4.229.128/2910.4.229.129 – 10.4.229.13410.4.229.135
17810.4.229.136/2910.4.229.137 – 10.4.229.14210.4.229.143
17910.4.229.144/2910.4.229.145 – 10.4.229.15010.4.229.151
18010.4.229.152/2910.4.229.153 – 10.4.229.15810.4.229.159
18110.4.229.160/2910.4.229.161 – 10.4.229.16610.4.229.167
18210.4.229.168/2910.4.229.169 – 10.4.229.17410.4.229.175
18310.4.229.176/2910.4.229.177 – 10.4.229.18210.4.229.183
18410.4.229.184/2910.4.229.185 – 10.4.229.19010.4.229.191
18510.4.229.192/2910.4.229.193 – 10.4.229.19810.4.229.199
18610.4.229.200/2910.4.229.201 – 10.4.229.20610.4.229.207
18710.4.229.208/2910.4.229.209 – 10.4.229.21410.4.229.215
18810.4.229.216/2910.4.229.217 – 10.4.229.22210.4.229.223
18910.4.229.224/2910.4.229.225 – 10.4.229.23010.4.229.231
19010.4.229.232/2910.4.229.233 – 10.4.229.23810.4.229.239
19110.4.229.240/2910.4.229.241 – 10.4.229.24610.4.229.247
19210.4.229.248/2910.4.229.249 – 10.4.229.25410.4.229.255
19310.4.230.0/2910.4.230.1 – 10.4.230.610.4.230.7
19410.4.230.8/2910.4.230.9 – 10.4.230.1410.4.230.15
19510.4.230.16/2910.4.230.17 – 10.4.230.2210.4.230.23
19610.4.230.24/2910.4.230.25 – 10.4.230.3010.4.230.31
19710.4.230.32/2910.4.230.33 – 10.4.230.3810.4.230.39
19810.4.230.40/2910.4.230.41 – 10.4.230.4610.4.230.47
19910.4.230.48/2910.4.230.49 – 10.4.230.5410.4.230.55
20010.4.230.56/2910.4.230.57 – 10.4.230.6210.4.230.63
20110.4.230.64/2910.4.230.65 – 10.4.230.7010.4.230.71
20210.4.230.72/2910.4.230.73 – 10.4.230.7810.4.230.79
20310.4.230.80/2910.4.230.81 – 10.4.230.8610.4.230.87
20410.4.230.88/2910.4.230.89 – 10.4.230.9410.4.230.95
20510.4.230.96/2910.4.230.97 – 10.4.230.10210.4.230.103
20610.4.230.104/2910.4.230.105 – 10.4.230.11010.4.230.111
20710.4.230.112/2910.4.230.113 – 10.4.230.11810.4.230.119
20810.4.230.120/2910.4.230.121 – 10.4.230.12610.4.230.127
20910.4.230.128/2910.4.230.129 – 10.4.230.13410.4.230.135
21010.4.230.136/2910.4.230.137 – 10.4.230.14210.4.230.143
21110.4.230.144/2910.4.230.145 – 10.4.230.15010.4.230.151
21210.4.230.152/2910.4.230.153 – 10.4.230.15810.4.230.159
21310.4.230.160/2910.4.230.161 – 10.4.230.16610.4.230.167
21410.4.230.168/2910.4.230.169 – 10.4.230.17410.4.230.175
21510.4.230.176/2910.4.230.177 – 10.4.230.18210.4.230.183
21610.4.230.184/2910.4.230.185 – 10.4.230.19010.4.230.191
21710.4.230.192/2910.4.230.193 – 10.4.230.19810.4.230.199
21810.4.230.200/2910.4.230.201 – 10.4.230.20610.4.230.207
21910.4.230.208/2910.4.230.209 – 10.4.230.21410.4.230.215
22010.4.230.216/2910.4.230.217 – 10.4.230.22210.4.230.223
22110.4.230.224/2910.4.230.225 – 10.4.230.23010.4.230.231
22210.4.230.232/2910.4.230.233 – 10.4.230.23810.4.230.239
22310.4.230.240/2910.4.230.241 – 10.4.230.24610.4.230.247
22410.4.230.248/2910.4.230.249 – 10.4.230.25410.4.230.255
22510.4.231.0/2910.4.231.1 – 10.4.231.610.4.231.7
22610.4.231.8/2910.4.231.9 – 10.4.231.1410.4.231.15
22710.4.231.16/2910.4.231.17 – 10.4.231.2210.4.231.23
22810.4.231.24/2910.4.231.25 – 10.4.231.3010.4.231.31
22910.4.231.32/2910.4.231.33 – 10.4.231.3810.4.231.39
23010.4.231.40/2910.4.231.41 – 10.4.231.4610.4.231.47
23110.4.231.48/2910.4.231.49 – 10.4.231.5410.4.231.55
23210.4.231.56/2910.4.231.57 – 10.4.231.6210.4.231.63
23310.4.231.64/2910.4.231.65 – 10.4.231.7010.4.231.71
23410.4.231.72/2910.4.231.73 – 10.4.231.7810.4.231.79
23510.4.231.80/2910.4.231.81 – 10.4.231.8610.4.231.87
23610.4.231.88/2910.4.231.89 – 10.4.231.9410.4.231.95
23710.4.231.96/2910.4.231.97 – 10.4.231.10210.4.231.103
23810.4.231.104/2910.4.231.105 – 10.4.231.11010.4.231.111
23910.4.231.112/2910.4.231.113 – 10.4.231.11810.4.231.119
24010.4.231.120/2910.4.231.121 – 10.4.231.12610.4.231.127
24110.4.231.128/2910.4.231.129 – 10.4.231.13410.4.231.135
24210.4.231.136/2910.4.231.137 – 10.4.231.14210.4.231.143
24310.4.231.144/2910.4.231.145 – 10.4.231.15010.4.231.151
24410.4.231.152/2910.4.231.153 – 10.4.231.15810.4.231.159
24510.4.231.160/2910.4.231.161 – 10.4.231.16610.4.231.167
24610.4.231.168/2910.4.231.169 – 10.4.231.17410.4.231.175
24710.4.231.176/2910.4.231.177 – 10.4.231.18210.4.231.183
24810.4.231.184/2910.4.231.185 – 10.4.231.19010.4.231.191
24910.4.231.192/2910.4.231.193 – 10.4.231.19810.4.231.199
25010.4.231.200/2910.4.231.201 – 10.4.231.20610.4.231.207
25110.4.231.208/2910.4.231.209 – 10.4.231.21410.4.231.215
25210.4.231.216/2910.4.231.217 – 10.4.231.22210.4.231.223
25310.4.231.224/2910.4.231.225 – 10.4.231.23010.4.231.231
25410.4.231.232/2910.4.231.233 – 10.4.231.23810.4.231.239
25510.4.231.240/2910.4.231.241 – 10.4.231.24610.4.231.247
25610.4.231.248/2910.4.231.249 – 10.4.231.25410.4.231.255
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 →