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)10.6.176.0/21
network10.6.176.0/21
broadcast10.6.183.255
first host10.6.176.1
last host10.6.183.254
subnet mask255.255.248.0
wildcard0.0.7.255
addresses2,048
usable hosts2,046
classA
ipcalc 10.6.176.0/21
address00001010.00000110.10110000.00000000
subnet mask11111111.11111111.11111000.00000000
network00001010.00000110.10110000.00000000
broadcast00001010.00000110.10110111.11111111
green = network part, grey = host part
hex0x0a06b000
decimal168210432
reverse dns0.176.6.10.in-addr.arpa
ipv4-mapped::ffff:a06:b000

/21 split into /29 · 256 subnets

close ×
#networkhost rangebroadcast
110.6.176.0/2910.6.176.1 – 10.6.176.610.6.176.7
210.6.176.8/2910.6.176.9 – 10.6.176.1410.6.176.15
310.6.176.16/2910.6.176.17 – 10.6.176.2210.6.176.23
410.6.176.24/2910.6.176.25 – 10.6.176.3010.6.176.31
510.6.176.32/2910.6.176.33 – 10.6.176.3810.6.176.39
610.6.176.40/2910.6.176.41 – 10.6.176.4610.6.176.47
710.6.176.48/2910.6.176.49 – 10.6.176.5410.6.176.55
810.6.176.56/2910.6.176.57 – 10.6.176.6210.6.176.63
910.6.176.64/2910.6.176.65 – 10.6.176.7010.6.176.71
1010.6.176.72/2910.6.176.73 – 10.6.176.7810.6.176.79
1110.6.176.80/2910.6.176.81 – 10.6.176.8610.6.176.87
1210.6.176.88/2910.6.176.89 – 10.6.176.9410.6.176.95
1310.6.176.96/2910.6.176.97 – 10.6.176.10210.6.176.103
1410.6.176.104/2910.6.176.105 – 10.6.176.11010.6.176.111
1510.6.176.112/2910.6.176.113 – 10.6.176.11810.6.176.119
1610.6.176.120/2910.6.176.121 – 10.6.176.12610.6.176.127
1710.6.176.128/2910.6.176.129 – 10.6.176.13410.6.176.135
1810.6.176.136/2910.6.176.137 – 10.6.176.14210.6.176.143
1910.6.176.144/2910.6.176.145 – 10.6.176.15010.6.176.151
2010.6.176.152/2910.6.176.153 – 10.6.176.15810.6.176.159
2110.6.176.160/2910.6.176.161 – 10.6.176.16610.6.176.167
2210.6.176.168/2910.6.176.169 – 10.6.176.17410.6.176.175
2310.6.176.176/2910.6.176.177 – 10.6.176.18210.6.176.183
2410.6.176.184/2910.6.176.185 – 10.6.176.19010.6.176.191
2510.6.176.192/2910.6.176.193 – 10.6.176.19810.6.176.199
2610.6.176.200/2910.6.176.201 – 10.6.176.20610.6.176.207
2710.6.176.208/2910.6.176.209 – 10.6.176.21410.6.176.215
2810.6.176.216/2910.6.176.217 – 10.6.176.22210.6.176.223
2910.6.176.224/2910.6.176.225 – 10.6.176.23010.6.176.231
3010.6.176.232/2910.6.176.233 – 10.6.176.23810.6.176.239
3110.6.176.240/2910.6.176.241 – 10.6.176.24610.6.176.247
3210.6.176.248/2910.6.176.249 – 10.6.176.25410.6.176.255
3310.6.177.0/2910.6.177.1 – 10.6.177.610.6.177.7
3410.6.177.8/2910.6.177.9 – 10.6.177.1410.6.177.15
3510.6.177.16/2910.6.177.17 – 10.6.177.2210.6.177.23
3610.6.177.24/2910.6.177.25 – 10.6.177.3010.6.177.31
3710.6.177.32/2910.6.177.33 – 10.6.177.3810.6.177.39
3810.6.177.40/2910.6.177.41 – 10.6.177.4610.6.177.47
3910.6.177.48/2910.6.177.49 – 10.6.177.5410.6.177.55
4010.6.177.56/2910.6.177.57 – 10.6.177.6210.6.177.63
4110.6.177.64/2910.6.177.65 – 10.6.177.7010.6.177.71
4210.6.177.72/2910.6.177.73 – 10.6.177.7810.6.177.79
4310.6.177.80/2910.6.177.81 – 10.6.177.8610.6.177.87
4410.6.177.88/2910.6.177.89 – 10.6.177.9410.6.177.95
4510.6.177.96/2910.6.177.97 – 10.6.177.10210.6.177.103
4610.6.177.104/2910.6.177.105 – 10.6.177.11010.6.177.111
4710.6.177.112/2910.6.177.113 – 10.6.177.11810.6.177.119
4810.6.177.120/2910.6.177.121 – 10.6.177.12610.6.177.127
4910.6.177.128/2910.6.177.129 – 10.6.177.13410.6.177.135
5010.6.177.136/2910.6.177.137 – 10.6.177.14210.6.177.143
5110.6.177.144/2910.6.177.145 – 10.6.177.15010.6.177.151
5210.6.177.152/2910.6.177.153 – 10.6.177.15810.6.177.159
5310.6.177.160/2910.6.177.161 – 10.6.177.16610.6.177.167
5410.6.177.168/2910.6.177.169 – 10.6.177.17410.6.177.175
5510.6.177.176/2910.6.177.177 – 10.6.177.18210.6.177.183
5610.6.177.184/2910.6.177.185 – 10.6.177.19010.6.177.191
5710.6.177.192/2910.6.177.193 – 10.6.177.19810.6.177.199
5810.6.177.200/2910.6.177.201 – 10.6.177.20610.6.177.207
5910.6.177.208/2910.6.177.209 – 10.6.177.21410.6.177.215
6010.6.177.216/2910.6.177.217 – 10.6.177.22210.6.177.223
6110.6.177.224/2910.6.177.225 – 10.6.177.23010.6.177.231
6210.6.177.232/2910.6.177.233 – 10.6.177.23810.6.177.239
6310.6.177.240/2910.6.177.241 – 10.6.177.24610.6.177.247
6410.6.177.248/2910.6.177.249 – 10.6.177.25410.6.177.255
6510.6.178.0/2910.6.178.1 – 10.6.178.610.6.178.7
6610.6.178.8/2910.6.178.9 – 10.6.178.1410.6.178.15
6710.6.178.16/2910.6.178.17 – 10.6.178.2210.6.178.23
6810.6.178.24/2910.6.178.25 – 10.6.178.3010.6.178.31
6910.6.178.32/2910.6.178.33 – 10.6.178.3810.6.178.39
7010.6.178.40/2910.6.178.41 – 10.6.178.4610.6.178.47
7110.6.178.48/2910.6.178.49 – 10.6.178.5410.6.178.55
7210.6.178.56/2910.6.178.57 – 10.6.178.6210.6.178.63
7310.6.178.64/2910.6.178.65 – 10.6.178.7010.6.178.71
7410.6.178.72/2910.6.178.73 – 10.6.178.7810.6.178.79
7510.6.178.80/2910.6.178.81 – 10.6.178.8610.6.178.87
7610.6.178.88/2910.6.178.89 – 10.6.178.9410.6.178.95
7710.6.178.96/2910.6.178.97 – 10.6.178.10210.6.178.103
7810.6.178.104/2910.6.178.105 – 10.6.178.11010.6.178.111
7910.6.178.112/2910.6.178.113 – 10.6.178.11810.6.178.119
8010.6.178.120/2910.6.178.121 – 10.6.178.12610.6.178.127
8110.6.178.128/2910.6.178.129 – 10.6.178.13410.6.178.135
8210.6.178.136/2910.6.178.137 – 10.6.178.14210.6.178.143
8310.6.178.144/2910.6.178.145 – 10.6.178.15010.6.178.151
8410.6.178.152/2910.6.178.153 – 10.6.178.15810.6.178.159
8510.6.178.160/2910.6.178.161 – 10.6.178.16610.6.178.167
8610.6.178.168/2910.6.178.169 – 10.6.178.17410.6.178.175
8710.6.178.176/2910.6.178.177 – 10.6.178.18210.6.178.183
8810.6.178.184/2910.6.178.185 – 10.6.178.19010.6.178.191
8910.6.178.192/2910.6.178.193 – 10.6.178.19810.6.178.199
9010.6.178.200/2910.6.178.201 – 10.6.178.20610.6.178.207
9110.6.178.208/2910.6.178.209 – 10.6.178.21410.6.178.215
9210.6.178.216/2910.6.178.217 – 10.6.178.22210.6.178.223
9310.6.178.224/2910.6.178.225 – 10.6.178.23010.6.178.231
9410.6.178.232/2910.6.178.233 – 10.6.178.23810.6.178.239
9510.6.178.240/2910.6.178.241 – 10.6.178.24610.6.178.247
9610.6.178.248/2910.6.178.249 – 10.6.178.25410.6.178.255
9710.6.179.0/2910.6.179.1 – 10.6.179.610.6.179.7
9810.6.179.8/2910.6.179.9 – 10.6.179.1410.6.179.15
9910.6.179.16/2910.6.179.17 – 10.6.179.2210.6.179.23
10010.6.179.24/2910.6.179.25 – 10.6.179.3010.6.179.31
10110.6.179.32/2910.6.179.33 – 10.6.179.3810.6.179.39
10210.6.179.40/2910.6.179.41 – 10.6.179.4610.6.179.47
10310.6.179.48/2910.6.179.49 – 10.6.179.5410.6.179.55
10410.6.179.56/2910.6.179.57 – 10.6.179.6210.6.179.63
10510.6.179.64/2910.6.179.65 – 10.6.179.7010.6.179.71
10610.6.179.72/2910.6.179.73 – 10.6.179.7810.6.179.79
10710.6.179.80/2910.6.179.81 – 10.6.179.8610.6.179.87
10810.6.179.88/2910.6.179.89 – 10.6.179.9410.6.179.95
10910.6.179.96/2910.6.179.97 – 10.6.179.10210.6.179.103
11010.6.179.104/2910.6.179.105 – 10.6.179.11010.6.179.111
11110.6.179.112/2910.6.179.113 – 10.6.179.11810.6.179.119
11210.6.179.120/2910.6.179.121 – 10.6.179.12610.6.179.127
11310.6.179.128/2910.6.179.129 – 10.6.179.13410.6.179.135
11410.6.179.136/2910.6.179.137 – 10.6.179.14210.6.179.143
11510.6.179.144/2910.6.179.145 – 10.6.179.15010.6.179.151
11610.6.179.152/2910.6.179.153 – 10.6.179.15810.6.179.159
11710.6.179.160/2910.6.179.161 – 10.6.179.16610.6.179.167
11810.6.179.168/2910.6.179.169 – 10.6.179.17410.6.179.175
11910.6.179.176/2910.6.179.177 – 10.6.179.18210.6.179.183
12010.6.179.184/2910.6.179.185 – 10.6.179.19010.6.179.191
12110.6.179.192/2910.6.179.193 – 10.6.179.19810.6.179.199
12210.6.179.200/2910.6.179.201 – 10.6.179.20610.6.179.207
12310.6.179.208/2910.6.179.209 – 10.6.179.21410.6.179.215
12410.6.179.216/2910.6.179.217 – 10.6.179.22210.6.179.223
12510.6.179.224/2910.6.179.225 – 10.6.179.23010.6.179.231
12610.6.179.232/2910.6.179.233 – 10.6.179.23810.6.179.239
12710.6.179.240/2910.6.179.241 – 10.6.179.24610.6.179.247
12810.6.179.248/2910.6.179.249 – 10.6.179.25410.6.179.255
12910.6.180.0/2910.6.180.1 – 10.6.180.610.6.180.7
13010.6.180.8/2910.6.180.9 – 10.6.180.1410.6.180.15
13110.6.180.16/2910.6.180.17 – 10.6.180.2210.6.180.23
13210.6.180.24/2910.6.180.25 – 10.6.180.3010.6.180.31
13310.6.180.32/2910.6.180.33 – 10.6.180.3810.6.180.39
13410.6.180.40/2910.6.180.41 – 10.6.180.4610.6.180.47
13510.6.180.48/2910.6.180.49 – 10.6.180.5410.6.180.55
13610.6.180.56/2910.6.180.57 – 10.6.180.6210.6.180.63
13710.6.180.64/2910.6.180.65 – 10.6.180.7010.6.180.71
13810.6.180.72/2910.6.180.73 – 10.6.180.7810.6.180.79
13910.6.180.80/2910.6.180.81 – 10.6.180.8610.6.180.87
14010.6.180.88/2910.6.180.89 – 10.6.180.9410.6.180.95
14110.6.180.96/2910.6.180.97 – 10.6.180.10210.6.180.103
14210.6.180.104/2910.6.180.105 – 10.6.180.11010.6.180.111
14310.6.180.112/2910.6.180.113 – 10.6.180.11810.6.180.119
14410.6.180.120/2910.6.180.121 – 10.6.180.12610.6.180.127
14510.6.180.128/2910.6.180.129 – 10.6.180.13410.6.180.135
14610.6.180.136/2910.6.180.137 – 10.6.180.14210.6.180.143
14710.6.180.144/2910.6.180.145 – 10.6.180.15010.6.180.151
14810.6.180.152/2910.6.180.153 – 10.6.180.15810.6.180.159
14910.6.180.160/2910.6.180.161 – 10.6.180.16610.6.180.167
15010.6.180.168/2910.6.180.169 – 10.6.180.17410.6.180.175
15110.6.180.176/2910.6.180.177 – 10.6.180.18210.6.180.183
15210.6.180.184/2910.6.180.185 – 10.6.180.19010.6.180.191
15310.6.180.192/2910.6.180.193 – 10.6.180.19810.6.180.199
15410.6.180.200/2910.6.180.201 – 10.6.180.20610.6.180.207
15510.6.180.208/2910.6.180.209 – 10.6.180.21410.6.180.215
15610.6.180.216/2910.6.180.217 – 10.6.180.22210.6.180.223
15710.6.180.224/2910.6.180.225 – 10.6.180.23010.6.180.231
15810.6.180.232/2910.6.180.233 – 10.6.180.23810.6.180.239
15910.6.180.240/2910.6.180.241 – 10.6.180.24610.6.180.247
16010.6.180.248/2910.6.180.249 – 10.6.180.25410.6.180.255
16110.6.181.0/2910.6.181.1 – 10.6.181.610.6.181.7
16210.6.181.8/2910.6.181.9 – 10.6.181.1410.6.181.15
16310.6.181.16/2910.6.181.17 – 10.6.181.2210.6.181.23
16410.6.181.24/2910.6.181.25 – 10.6.181.3010.6.181.31
16510.6.181.32/2910.6.181.33 – 10.6.181.3810.6.181.39
16610.6.181.40/2910.6.181.41 – 10.6.181.4610.6.181.47
16710.6.181.48/2910.6.181.49 – 10.6.181.5410.6.181.55
16810.6.181.56/2910.6.181.57 – 10.6.181.6210.6.181.63
16910.6.181.64/2910.6.181.65 – 10.6.181.7010.6.181.71
17010.6.181.72/2910.6.181.73 – 10.6.181.7810.6.181.79
17110.6.181.80/2910.6.181.81 – 10.6.181.8610.6.181.87
17210.6.181.88/2910.6.181.89 – 10.6.181.9410.6.181.95
17310.6.181.96/2910.6.181.97 – 10.6.181.10210.6.181.103
17410.6.181.104/2910.6.181.105 – 10.6.181.11010.6.181.111
17510.6.181.112/2910.6.181.113 – 10.6.181.11810.6.181.119
17610.6.181.120/2910.6.181.121 – 10.6.181.12610.6.181.127
17710.6.181.128/2910.6.181.129 – 10.6.181.13410.6.181.135
17810.6.181.136/2910.6.181.137 – 10.6.181.14210.6.181.143
17910.6.181.144/2910.6.181.145 – 10.6.181.15010.6.181.151
18010.6.181.152/2910.6.181.153 – 10.6.181.15810.6.181.159
18110.6.181.160/2910.6.181.161 – 10.6.181.16610.6.181.167
18210.6.181.168/2910.6.181.169 – 10.6.181.17410.6.181.175
18310.6.181.176/2910.6.181.177 – 10.6.181.18210.6.181.183
18410.6.181.184/2910.6.181.185 – 10.6.181.19010.6.181.191
18510.6.181.192/2910.6.181.193 – 10.6.181.19810.6.181.199
18610.6.181.200/2910.6.181.201 – 10.6.181.20610.6.181.207
18710.6.181.208/2910.6.181.209 – 10.6.181.21410.6.181.215
18810.6.181.216/2910.6.181.217 – 10.6.181.22210.6.181.223
18910.6.181.224/2910.6.181.225 – 10.6.181.23010.6.181.231
19010.6.181.232/2910.6.181.233 – 10.6.181.23810.6.181.239
19110.6.181.240/2910.6.181.241 – 10.6.181.24610.6.181.247
19210.6.181.248/2910.6.181.249 – 10.6.181.25410.6.181.255
19310.6.182.0/2910.6.182.1 – 10.6.182.610.6.182.7
19410.6.182.8/2910.6.182.9 – 10.6.182.1410.6.182.15
19510.6.182.16/2910.6.182.17 – 10.6.182.2210.6.182.23
19610.6.182.24/2910.6.182.25 – 10.6.182.3010.6.182.31
19710.6.182.32/2910.6.182.33 – 10.6.182.3810.6.182.39
19810.6.182.40/2910.6.182.41 – 10.6.182.4610.6.182.47
19910.6.182.48/2910.6.182.49 – 10.6.182.5410.6.182.55
20010.6.182.56/2910.6.182.57 – 10.6.182.6210.6.182.63
20110.6.182.64/2910.6.182.65 – 10.6.182.7010.6.182.71
20210.6.182.72/2910.6.182.73 – 10.6.182.7810.6.182.79
20310.6.182.80/2910.6.182.81 – 10.6.182.8610.6.182.87
20410.6.182.88/2910.6.182.89 – 10.6.182.9410.6.182.95
20510.6.182.96/2910.6.182.97 – 10.6.182.10210.6.182.103
20610.6.182.104/2910.6.182.105 – 10.6.182.11010.6.182.111
20710.6.182.112/2910.6.182.113 – 10.6.182.11810.6.182.119
20810.6.182.120/2910.6.182.121 – 10.6.182.12610.6.182.127
20910.6.182.128/2910.6.182.129 – 10.6.182.13410.6.182.135
21010.6.182.136/2910.6.182.137 – 10.6.182.14210.6.182.143
21110.6.182.144/2910.6.182.145 – 10.6.182.15010.6.182.151
21210.6.182.152/2910.6.182.153 – 10.6.182.15810.6.182.159
21310.6.182.160/2910.6.182.161 – 10.6.182.16610.6.182.167
21410.6.182.168/2910.6.182.169 – 10.6.182.17410.6.182.175
21510.6.182.176/2910.6.182.177 – 10.6.182.18210.6.182.183
21610.6.182.184/2910.6.182.185 – 10.6.182.19010.6.182.191
21710.6.182.192/2910.6.182.193 – 10.6.182.19810.6.182.199
21810.6.182.200/2910.6.182.201 – 10.6.182.20610.6.182.207
21910.6.182.208/2910.6.182.209 – 10.6.182.21410.6.182.215
22010.6.182.216/2910.6.182.217 – 10.6.182.22210.6.182.223
22110.6.182.224/2910.6.182.225 – 10.6.182.23010.6.182.231
22210.6.182.232/2910.6.182.233 – 10.6.182.23810.6.182.239
22310.6.182.240/2910.6.182.241 – 10.6.182.24610.6.182.247
22410.6.182.248/2910.6.182.249 – 10.6.182.25410.6.182.255
22510.6.183.0/2910.6.183.1 – 10.6.183.610.6.183.7
22610.6.183.8/2910.6.183.9 – 10.6.183.1410.6.183.15
22710.6.183.16/2910.6.183.17 – 10.6.183.2210.6.183.23
22810.6.183.24/2910.6.183.25 – 10.6.183.3010.6.183.31
22910.6.183.32/2910.6.183.33 – 10.6.183.3810.6.183.39
23010.6.183.40/2910.6.183.41 – 10.6.183.4610.6.183.47
23110.6.183.48/2910.6.183.49 – 10.6.183.5410.6.183.55
23210.6.183.56/2910.6.183.57 – 10.6.183.6210.6.183.63
23310.6.183.64/2910.6.183.65 – 10.6.183.7010.6.183.71
23410.6.183.72/2910.6.183.73 – 10.6.183.7810.6.183.79
23510.6.183.80/2910.6.183.81 – 10.6.183.8610.6.183.87
23610.6.183.88/2910.6.183.89 – 10.6.183.9410.6.183.95
23710.6.183.96/2910.6.183.97 – 10.6.183.10210.6.183.103
23810.6.183.104/2910.6.183.105 – 10.6.183.11010.6.183.111
23910.6.183.112/2910.6.183.113 – 10.6.183.11810.6.183.119
24010.6.183.120/2910.6.183.121 – 10.6.183.12610.6.183.127
24110.6.183.128/2910.6.183.129 – 10.6.183.13410.6.183.135
24210.6.183.136/2910.6.183.137 – 10.6.183.14210.6.183.143
24310.6.183.144/2910.6.183.145 – 10.6.183.15010.6.183.151
24410.6.183.152/2910.6.183.153 – 10.6.183.15810.6.183.159
24510.6.183.160/2910.6.183.161 – 10.6.183.16610.6.183.167
24610.6.183.168/2910.6.183.169 – 10.6.183.17410.6.183.175
24710.6.183.176/2910.6.183.177 – 10.6.183.18210.6.183.183
24810.6.183.184/2910.6.183.185 – 10.6.183.19010.6.183.191
24910.6.183.192/2910.6.183.193 – 10.6.183.19810.6.183.199
25010.6.183.200/2910.6.183.201 – 10.6.183.20610.6.183.207
25110.6.183.208/2910.6.183.209 – 10.6.183.21410.6.183.215
25210.6.183.216/2910.6.183.217 – 10.6.183.22210.6.183.223
25310.6.183.224/2910.6.183.225 – 10.6.183.23010.6.183.231
25410.6.183.232/2910.6.183.233 – 10.6.183.23810.6.183.239
25510.6.183.240/2910.6.183.241 – 10.6.183.24610.6.183.247
25610.6.183.248/2910.6.183.249 – 10.6.183.25410.6.183.255
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 →