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)10.7.248.0/21
network10.7.248.0/21
broadcast10.7.255.255
first host10.7.248.1
last host10.7.255.254
subnet mask255.255.248.0
wildcard0.0.7.255
addresses2,048
usable hosts2,046
classA
ipcalc 10.7.248.0/21
address00001010.00000111.11111000.00000000
subnet mask11111111.11111111.11111000.00000000
network00001010.00000111.11111000.00000000
broadcast00001010.00000111.11111111.11111111
green = network part, grey = host part
hex0x0a07f800
decimal168294400
reverse dns0.248.7.10.in-addr.arpa
ipv4-mapped::ffff:a07:f800

/21 split into /29 · 256 subnets

close ×
#networkhost rangebroadcast
110.7.248.0/2910.7.248.1 – 10.7.248.610.7.248.7
210.7.248.8/2910.7.248.9 – 10.7.248.1410.7.248.15
310.7.248.16/2910.7.248.17 – 10.7.248.2210.7.248.23
410.7.248.24/2910.7.248.25 – 10.7.248.3010.7.248.31
510.7.248.32/2910.7.248.33 – 10.7.248.3810.7.248.39
610.7.248.40/2910.7.248.41 – 10.7.248.4610.7.248.47
710.7.248.48/2910.7.248.49 – 10.7.248.5410.7.248.55
810.7.248.56/2910.7.248.57 – 10.7.248.6210.7.248.63
910.7.248.64/2910.7.248.65 – 10.7.248.7010.7.248.71
1010.7.248.72/2910.7.248.73 – 10.7.248.7810.7.248.79
1110.7.248.80/2910.7.248.81 – 10.7.248.8610.7.248.87
1210.7.248.88/2910.7.248.89 – 10.7.248.9410.7.248.95
1310.7.248.96/2910.7.248.97 – 10.7.248.10210.7.248.103
1410.7.248.104/2910.7.248.105 – 10.7.248.11010.7.248.111
1510.7.248.112/2910.7.248.113 – 10.7.248.11810.7.248.119
1610.7.248.120/2910.7.248.121 – 10.7.248.12610.7.248.127
1710.7.248.128/2910.7.248.129 – 10.7.248.13410.7.248.135
1810.7.248.136/2910.7.248.137 – 10.7.248.14210.7.248.143
1910.7.248.144/2910.7.248.145 – 10.7.248.15010.7.248.151
2010.7.248.152/2910.7.248.153 – 10.7.248.15810.7.248.159
2110.7.248.160/2910.7.248.161 – 10.7.248.16610.7.248.167
2210.7.248.168/2910.7.248.169 – 10.7.248.17410.7.248.175
2310.7.248.176/2910.7.248.177 – 10.7.248.18210.7.248.183
2410.7.248.184/2910.7.248.185 – 10.7.248.19010.7.248.191
2510.7.248.192/2910.7.248.193 – 10.7.248.19810.7.248.199
2610.7.248.200/2910.7.248.201 – 10.7.248.20610.7.248.207
2710.7.248.208/2910.7.248.209 – 10.7.248.21410.7.248.215
2810.7.248.216/2910.7.248.217 – 10.7.248.22210.7.248.223
2910.7.248.224/2910.7.248.225 – 10.7.248.23010.7.248.231
3010.7.248.232/2910.7.248.233 – 10.7.248.23810.7.248.239
3110.7.248.240/2910.7.248.241 – 10.7.248.24610.7.248.247
3210.7.248.248/2910.7.248.249 – 10.7.248.25410.7.248.255
3310.7.249.0/2910.7.249.1 – 10.7.249.610.7.249.7
3410.7.249.8/2910.7.249.9 – 10.7.249.1410.7.249.15
3510.7.249.16/2910.7.249.17 – 10.7.249.2210.7.249.23
3610.7.249.24/2910.7.249.25 – 10.7.249.3010.7.249.31
3710.7.249.32/2910.7.249.33 – 10.7.249.3810.7.249.39
3810.7.249.40/2910.7.249.41 – 10.7.249.4610.7.249.47
3910.7.249.48/2910.7.249.49 – 10.7.249.5410.7.249.55
4010.7.249.56/2910.7.249.57 – 10.7.249.6210.7.249.63
4110.7.249.64/2910.7.249.65 – 10.7.249.7010.7.249.71
4210.7.249.72/2910.7.249.73 – 10.7.249.7810.7.249.79
4310.7.249.80/2910.7.249.81 – 10.7.249.8610.7.249.87
4410.7.249.88/2910.7.249.89 – 10.7.249.9410.7.249.95
4510.7.249.96/2910.7.249.97 – 10.7.249.10210.7.249.103
4610.7.249.104/2910.7.249.105 – 10.7.249.11010.7.249.111
4710.7.249.112/2910.7.249.113 – 10.7.249.11810.7.249.119
4810.7.249.120/2910.7.249.121 – 10.7.249.12610.7.249.127
4910.7.249.128/2910.7.249.129 – 10.7.249.13410.7.249.135
5010.7.249.136/2910.7.249.137 – 10.7.249.14210.7.249.143
5110.7.249.144/2910.7.249.145 – 10.7.249.15010.7.249.151
5210.7.249.152/2910.7.249.153 – 10.7.249.15810.7.249.159
5310.7.249.160/2910.7.249.161 – 10.7.249.16610.7.249.167
5410.7.249.168/2910.7.249.169 – 10.7.249.17410.7.249.175
5510.7.249.176/2910.7.249.177 – 10.7.249.18210.7.249.183
5610.7.249.184/2910.7.249.185 – 10.7.249.19010.7.249.191
5710.7.249.192/2910.7.249.193 – 10.7.249.19810.7.249.199
5810.7.249.200/2910.7.249.201 – 10.7.249.20610.7.249.207
5910.7.249.208/2910.7.249.209 – 10.7.249.21410.7.249.215
6010.7.249.216/2910.7.249.217 – 10.7.249.22210.7.249.223
6110.7.249.224/2910.7.249.225 – 10.7.249.23010.7.249.231
6210.7.249.232/2910.7.249.233 – 10.7.249.23810.7.249.239
6310.7.249.240/2910.7.249.241 – 10.7.249.24610.7.249.247
6410.7.249.248/2910.7.249.249 – 10.7.249.25410.7.249.255
6510.7.250.0/2910.7.250.1 – 10.7.250.610.7.250.7
6610.7.250.8/2910.7.250.9 – 10.7.250.1410.7.250.15
6710.7.250.16/2910.7.250.17 – 10.7.250.2210.7.250.23
6810.7.250.24/2910.7.250.25 – 10.7.250.3010.7.250.31
6910.7.250.32/2910.7.250.33 – 10.7.250.3810.7.250.39
7010.7.250.40/2910.7.250.41 – 10.7.250.4610.7.250.47
7110.7.250.48/2910.7.250.49 – 10.7.250.5410.7.250.55
7210.7.250.56/2910.7.250.57 – 10.7.250.6210.7.250.63
7310.7.250.64/2910.7.250.65 – 10.7.250.7010.7.250.71
7410.7.250.72/2910.7.250.73 – 10.7.250.7810.7.250.79
7510.7.250.80/2910.7.250.81 – 10.7.250.8610.7.250.87
7610.7.250.88/2910.7.250.89 – 10.7.250.9410.7.250.95
7710.7.250.96/2910.7.250.97 – 10.7.250.10210.7.250.103
7810.7.250.104/2910.7.250.105 – 10.7.250.11010.7.250.111
7910.7.250.112/2910.7.250.113 – 10.7.250.11810.7.250.119
8010.7.250.120/2910.7.250.121 – 10.7.250.12610.7.250.127
8110.7.250.128/2910.7.250.129 – 10.7.250.13410.7.250.135
8210.7.250.136/2910.7.250.137 – 10.7.250.14210.7.250.143
8310.7.250.144/2910.7.250.145 – 10.7.250.15010.7.250.151
8410.7.250.152/2910.7.250.153 – 10.7.250.15810.7.250.159
8510.7.250.160/2910.7.250.161 – 10.7.250.16610.7.250.167
8610.7.250.168/2910.7.250.169 – 10.7.250.17410.7.250.175
8710.7.250.176/2910.7.250.177 – 10.7.250.18210.7.250.183
8810.7.250.184/2910.7.250.185 – 10.7.250.19010.7.250.191
8910.7.250.192/2910.7.250.193 – 10.7.250.19810.7.250.199
9010.7.250.200/2910.7.250.201 – 10.7.250.20610.7.250.207
9110.7.250.208/2910.7.250.209 – 10.7.250.21410.7.250.215
9210.7.250.216/2910.7.250.217 – 10.7.250.22210.7.250.223
9310.7.250.224/2910.7.250.225 – 10.7.250.23010.7.250.231
9410.7.250.232/2910.7.250.233 – 10.7.250.23810.7.250.239
9510.7.250.240/2910.7.250.241 – 10.7.250.24610.7.250.247
9610.7.250.248/2910.7.250.249 – 10.7.250.25410.7.250.255
9710.7.251.0/2910.7.251.1 – 10.7.251.610.7.251.7
9810.7.251.8/2910.7.251.9 – 10.7.251.1410.7.251.15
9910.7.251.16/2910.7.251.17 – 10.7.251.2210.7.251.23
10010.7.251.24/2910.7.251.25 – 10.7.251.3010.7.251.31
10110.7.251.32/2910.7.251.33 – 10.7.251.3810.7.251.39
10210.7.251.40/2910.7.251.41 – 10.7.251.4610.7.251.47
10310.7.251.48/2910.7.251.49 – 10.7.251.5410.7.251.55
10410.7.251.56/2910.7.251.57 – 10.7.251.6210.7.251.63
10510.7.251.64/2910.7.251.65 – 10.7.251.7010.7.251.71
10610.7.251.72/2910.7.251.73 – 10.7.251.7810.7.251.79
10710.7.251.80/2910.7.251.81 – 10.7.251.8610.7.251.87
10810.7.251.88/2910.7.251.89 – 10.7.251.9410.7.251.95
10910.7.251.96/2910.7.251.97 – 10.7.251.10210.7.251.103
11010.7.251.104/2910.7.251.105 – 10.7.251.11010.7.251.111
11110.7.251.112/2910.7.251.113 – 10.7.251.11810.7.251.119
11210.7.251.120/2910.7.251.121 – 10.7.251.12610.7.251.127
11310.7.251.128/2910.7.251.129 – 10.7.251.13410.7.251.135
11410.7.251.136/2910.7.251.137 – 10.7.251.14210.7.251.143
11510.7.251.144/2910.7.251.145 – 10.7.251.15010.7.251.151
11610.7.251.152/2910.7.251.153 – 10.7.251.15810.7.251.159
11710.7.251.160/2910.7.251.161 – 10.7.251.16610.7.251.167
11810.7.251.168/2910.7.251.169 – 10.7.251.17410.7.251.175
11910.7.251.176/2910.7.251.177 – 10.7.251.18210.7.251.183
12010.7.251.184/2910.7.251.185 – 10.7.251.19010.7.251.191
12110.7.251.192/2910.7.251.193 – 10.7.251.19810.7.251.199
12210.7.251.200/2910.7.251.201 – 10.7.251.20610.7.251.207
12310.7.251.208/2910.7.251.209 – 10.7.251.21410.7.251.215
12410.7.251.216/2910.7.251.217 – 10.7.251.22210.7.251.223
12510.7.251.224/2910.7.251.225 – 10.7.251.23010.7.251.231
12610.7.251.232/2910.7.251.233 – 10.7.251.23810.7.251.239
12710.7.251.240/2910.7.251.241 – 10.7.251.24610.7.251.247
12810.7.251.248/2910.7.251.249 – 10.7.251.25410.7.251.255
12910.7.252.0/2910.7.252.1 – 10.7.252.610.7.252.7
13010.7.252.8/2910.7.252.9 – 10.7.252.1410.7.252.15
13110.7.252.16/2910.7.252.17 – 10.7.252.2210.7.252.23
13210.7.252.24/2910.7.252.25 – 10.7.252.3010.7.252.31
13310.7.252.32/2910.7.252.33 – 10.7.252.3810.7.252.39
13410.7.252.40/2910.7.252.41 – 10.7.252.4610.7.252.47
13510.7.252.48/2910.7.252.49 – 10.7.252.5410.7.252.55
13610.7.252.56/2910.7.252.57 – 10.7.252.6210.7.252.63
13710.7.252.64/2910.7.252.65 – 10.7.252.7010.7.252.71
13810.7.252.72/2910.7.252.73 – 10.7.252.7810.7.252.79
13910.7.252.80/2910.7.252.81 – 10.7.252.8610.7.252.87
14010.7.252.88/2910.7.252.89 – 10.7.252.9410.7.252.95
14110.7.252.96/2910.7.252.97 – 10.7.252.10210.7.252.103
14210.7.252.104/2910.7.252.105 – 10.7.252.11010.7.252.111
14310.7.252.112/2910.7.252.113 – 10.7.252.11810.7.252.119
14410.7.252.120/2910.7.252.121 – 10.7.252.12610.7.252.127
14510.7.252.128/2910.7.252.129 – 10.7.252.13410.7.252.135
14610.7.252.136/2910.7.252.137 – 10.7.252.14210.7.252.143
14710.7.252.144/2910.7.252.145 – 10.7.252.15010.7.252.151
14810.7.252.152/2910.7.252.153 – 10.7.252.15810.7.252.159
14910.7.252.160/2910.7.252.161 – 10.7.252.16610.7.252.167
15010.7.252.168/2910.7.252.169 – 10.7.252.17410.7.252.175
15110.7.252.176/2910.7.252.177 – 10.7.252.18210.7.252.183
15210.7.252.184/2910.7.252.185 – 10.7.252.19010.7.252.191
15310.7.252.192/2910.7.252.193 – 10.7.252.19810.7.252.199
15410.7.252.200/2910.7.252.201 – 10.7.252.20610.7.252.207
15510.7.252.208/2910.7.252.209 – 10.7.252.21410.7.252.215
15610.7.252.216/2910.7.252.217 – 10.7.252.22210.7.252.223
15710.7.252.224/2910.7.252.225 – 10.7.252.23010.7.252.231
15810.7.252.232/2910.7.252.233 – 10.7.252.23810.7.252.239
15910.7.252.240/2910.7.252.241 – 10.7.252.24610.7.252.247
16010.7.252.248/2910.7.252.249 – 10.7.252.25410.7.252.255
16110.7.253.0/2910.7.253.1 – 10.7.253.610.7.253.7
16210.7.253.8/2910.7.253.9 – 10.7.253.1410.7.253.15
16310.7.253.16/2910.7.253.17 – 10.7.253.2210.7.253.23
16410.7.253.24/2910.7.253.25 – 10.7.253.3010.7.253.31
16510.7.253.32/2910.7.253.33 – 10.7.253.3810.7.253.39
16610.7.253.40/2910.7.253.41 – 10.7.253.4610.7.253.47
16710.7.253.48/2910.7.253.49 – 10.7.253.5410.7.253.55
16810.7.253.56/2910.7.253.57 – 10.7.253.6210.7.253.63
16910.7.253.64/2910.7.253.65 – 10.7.253.7010.7.253.71
17010.7.253.72/2910.7.253.73 – 10.7.253.7810.7.253.79
17110.7.253.80/2910.7.253.81 – 10.7.253.8610.7.253.87
17210.7.253.88/2910.7.253.89 – 10.7.253.9410.7.253.95
17310.7.253.96/2910.7.253.97 – 10.7.253.10210.7.253.103
17410.7.253.104/2910.7.253.105 – 10.7.253.11010.7.253.111
17510.7.253.112/2910.7.253.113 – 10.7.253.11810.7.253.119
17610.7.253.120/2910.7.253.121 – 10.7.253.12610.7.253.127
17710.7.253.128/2910.7.253.129 – 10.7.253.13410.7.253.135
17810.7.253.136/2910.7.253.137 – 10.7.253.14210.7.253.143
17910.7.253.144/2910.7.253.145 – 10.7.253.15010.7.253.151
18010.7.253.152/2910.7.253.153 – 10.7.253.15810.7.253.159
18110.7.253.160/2910.7.253.161 – 10.7.253.16610.7.253.167
18210.7.253.168/2910.7.253.169 – 10.7.253.17410.7.253.175
18310.7.253.176/2910.7.253.177 – 10.7.253.18210.7.253.183
18410.7.253.184/2910.7.253.185 – 10.7.253.19010.7.253.191
18510.7.253.192/2910.7.253.193 – 10.7.253.19810.7.253.199
18610.7.253.200/2910.7.253.201 – 10.7.253.20610.7.253.207
18710.7.253.208/2910.7.253.209 – 10.7.253.21410.7.253.215
18810.7.253.216/2910.7.253.217 – 10.7.253.22210.7.253.223
18910.7.253.224/2910.7.253.225 – 10.7.253.23010.7.253.231
19010.7.253.232/2910.7.253.233 – 10.7.253.23810.7.253.239
19110.7.253.240/2910.7.253.241 – 10.7.253.24610.7.253.247
19210.7.253.248/2910.7.253.249 – 10.7.253.25410.7.253.255
19310.7.254.0/2910.7.254.1 – 10.7.254.610.7.254.7
19410.7.254.8/2910.7.254.9 – 10.7.254.1410.7.254.15
19510.7.254.16/2910.7.254.17 – 10.7.254.2210.7.254.23
19610.7.254.24/2910.7.254.25 – 10.7.254.3010.7.254.31
19710.7.254.32/2910.7.254.33 – 10.7.254.3810.7.254.39
19810.7.254.40/2910.7.254.41 – 10.7.254.4610.7.254.47
19910.7.254.48/2910.7.254.49 – 10.7.254.5410.7.254.55
20010.7.254.56/2910.7.254.57 – 10.7.254.6210.7.254.63
20110.7.254.64/2910.7.254.65 – 10.7.254.7010.7.254.71
20210.7.254.72/2910.7.254.73 – 10.7.254.7810.7.254.79
20310.7.254.80/2910.7.254.81 – 10.7.254.8610.7.254.87
20410.7.254.88/2910.7.254.89 – 10.7.254.9410.7.254.95
20510.7.254.96/2910.7.254.97 – 10.7.254.10210.7.254.103
20610.7.254.104/2910.7.254.105 – 10.7.254.11010.7.254.111
20710.7.254.112/2910.7.254.113 – 10.7.254.11810.7.254.119
20810.7.254.120/2910.7.254.121 – 10.7.254.12610.7.254.127
20910.7.254.128/2910.7.254.129 – 10.7.254.13410.7.254.135
21010.7.254.136/2910.7.254.137 – 10.7.254.14210.7.254.143
21110.7.254.144/2910.7.254.145 – 10.7.254.15010.7.254.151
21210.7.254.152/2910.7.254.153 – 10.7.254.15810.7.254.159
21310.7.254.160/2910.7.254.161 – 10.7.254.16610.7.254.167
21410.7.254.168/2910.7.254.169 – 10.7.254.17410.7.254.175
21510.7.254.176/2910.7.254.177 – 10.7.254.18210.7.254.183
21610.7.254.184/2910.7.254.185 – 10.7.254.19010.7.254.191
21710.7.254.192/2910.7.254.193 – 10.7.254.19810.7.254.199
21810.7.254.200/2910.7.254.201 – 10.7.254.20610.7.254.207
21910.7.254.208/2910.7.254.209 – 10.7.254.21410.7.254.215
22010.7.254.216/2910.7.254.217 – 10.7.254.22210.7.254.223
22110.7.254.224/2910.7.254.225 – 10.7.254.23010.7.254.231
22210.7.254.232/2910.7.254.233 – 10.7.254.23810.7.254.239
22310.7.254.240/2910.7.254.241 – 10.7.254.24610.7.254.247
22410.7.254.248/2910.7.254.249 – 10.7.254.25410.7.254.255
22510.7.255.0/2910.7.255.1 – 10.7.255.610.7.255.7
22610.7.255.8/2910.7.255.9 – 10.7.255.1410.7.255.15
22710.7.255.16/2910.7.255.17 – 10.7.255.2210.7.255.23
22810.7.255.24/2910.7.255.25 – 10.7.255.3010.7.255.31
22910.7.255.32/2910.7.255.33 – 10.7.255.3810.7.255.39
23010.7.255.40/2910.7.255.41 – 10.7.255.4610.7.255.47
23110.7.255.48/2910.7.255.49 – 10.7.255.5410.7.255.55
23210.7.255.56/2910.7.255.57 – 10.7.255.6210.7.255.63
23310.7.255.64/2910.7.255.65 – 10.7.255.7010.7.255.71
23410.7.255.72/2910.7.255.73 – 10.7.255.7810.7.255.79
23510.7.255.80/2910.7.255.81 – 10.7.255.8610.7.255.87
23610.7.255.88/2910.7.255.89 – 10.7.255.9410.7.255.95
23710.7.255.96/2910.7.255.97 – 10.7.255.10210.7.255.103
23810.7.255.104/2910.7.255.105 – 10.7.255.11010.7.255.111
23910.7.255.112/2910.7.255.113 – 10.7.255.11810.7.255.119
24010.7.255.120/2910.7.255.121 – 10.7.255.12610.7.255.127
24110.7.255.128/2910.7.255.129 – 10.7.255.13410.7.255.135
24210.7.255.136/2910.7.255.137 – 10.7.255.14210.7.255.143
24310.7.255.144/2910.7.255.145 – 10.7.255.15010.7.255.151
24410.7.255.152/2910.7.255.153 – 10.7.255.15810.7.255.159
24510.7.255.160/2910.7.255.161 – 10.7.255.16610.7.255.167
24610.7.255.168/2910.7.255.169 – 10.7.255.17410.7.255.175
24710.7.255.176/2910.7.255.177 – 10.7.255.18210.7.255.183
24810.7.255.184/2910.7.255.185 – 10.7.255.19010.7.255.191
24910.7.255.192/2910.7.255.193 – 10.7.255.19810.7.255.199
25010.7.255.200/2910.7.255.201 – 10.7.255.20610.7.255.207
25110.7.255.208/2910.7.255.209 – 10.7.255.21410.7.255.215
25210.7.255.216/2910.7.255.217 – 10.7.255.22210.7.255.223
25310.7.255.224/2910.7.255.225 – 10.7.255.23010.7.255.231
25410.7.255.232/2910.7.255.233 – 10.7.255.23810.7.255.239
25510.7.255.240/2910.7.255.241 – 10.7.255.24610.7.255.247
25610.7.255.248/2910.7.255.249 – 10.7.255.25410.7.255.255
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 →