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)10.7.144.0/21
network10.7.144.0/21
broadcast10.7.151.255
first host10.7.144.1
last host10.7.151.254
subnet mask255.255.248.0
wildcard0.0.7.255
addresses2,048
usable hosts2,046
classA
ipcalc 10.7.144.0/21
address00001010.00000111.10010000.00000000
subnet mask11111111.11111111.11111000.00000000
network00001010.00000111.10010000.00000000
broadcast00001010.00000111.10010111.11111111
green = network part, grey = host part
hex0x0a079000
decimal168267776
reverse dns0.144.7.10.in-addr.arpa
ipv4-mapped::ffff:a07:9000

/21 split into /29 · 256 subnets

close ×
#networkhost rangebroadcast
110.7.144.0/2910.7.144.1 – 10.7.144.610.7.144.7
210.7.144.8/2910.7.144.9 – 10.7.144.1410.7.144.15
310.7.144.16/2910.7.144.17 – 10.7.144.2210.7.144.23
410.7.144.24/2910.7.144.25 – 10.7.144.3010.7.144.31
510.7.144.32/2910.7.144.33 – 10.7.144.3810.7.144.39
610.7.144.40/2910.7.144.41 – 10.7.144.4610.7.144.47
710.7.144.48/2910.7.144.49 – 10.7.144.5410.7.144.55
810.7.144.56/2910.7.144.57 – 10.7.144.6210.7.144.63
910.7.144.64/2910.7.144.65 – 10.7.144.7010.7.144.71
1010.7.144.72/2910.7.144.73 – 10.7.144.7810.7.144.79
1110.7.144.80/2910.7.144.81 – 10.7.144.8610.7.144.87
1210.7.144.88/2910.7.144.89 – 10.7.144.9410.7.144.95
1310.7.144.96/2910.7.144.97 – 10.7.144.10210.7.144.103
1410.7.144.104/2910.7.144.105 – 10.7.144.11010.7.144.111
1510.7.144.112/2910.7.144.113 – 10.7.144.11810.7.144.119
1610.7.144.120/2910.7.144.121 – 10.7.144.12610.7.144.127
1710.7.144.128/2910.7.144.129 – 10.7.144.13410.7.144.135
1810.7.144.136/2910.7.144.137 – 10.7.144.14210.7.144.143
1910.7.144.144/2910.7.144.145 – 10.7.144.15010.7.144.151
2010.7.144.152/2910.7.144.153 – 10.7.144.15810.7.144.159
2110.7.144.160/2910.7.144.161 – 10.7.144.16610.7.144.167
2210.7.144.168/2910.7.144.169 – 10.7.144.17410.7.144.175
2310.7.144.176/2910.7.144.177 – 10.7.144.18210.7.144.183
2410.7.144.184/2910.7.144.185 – 10.7.144.19010.7.144.191
2510.7.144.192/2910.7.144.193 – 10.7.144.19810.7.144.199
2610.7.144.200/2910.7.144.201 – 10.7.144.20610.7.144.207
2710.7.144.208/2910.7.144.209 – 10.7.144.21410.7.144.215
2810.7.144.216/2910.7.144.217 – 10.7.144.22210.7.144.223
2910.7.144.224/2910.7.144.225 – 10.7.144.23010.7.144.231
3010.7.144.232/2910.7.144.233 – 10.7.144.23810.7.144.239
3110.7.144.240/2910.7.144.241 – 10.7.144.24610.7.144.247
3210.7.144.248/2910.7.144.249 – 10.7.144.25410.7.144.255
3310.7.145.0/2910.7.145.1 – 10.7.145.610.7.145.7
3410.7.145.8/2910.7.145.9 – 10.7.145.1410.7.145.15
3510.7.145.16/2910.7.145.17 – 10.7.145.2210.7.145.23
3610.7.145.24/2910.7.145.25 – 10.7.145.3010.7.145.31
3710.7.145.32/2910.7.145.33 – 10.7.145.3810.7.145.39
3810.7.145.40/2910.7.145.41 – 10.7.145.4610.7.145.47
3910.7.145.48/2910.7.145.49 – 10.7.145.5410.7.145.55
4010.7.145.56/2910.7.145.57 – 10.7.145.6210.7.145.63
4110.7.145.64/2910.7.145.65 – 10.7.145.7010.7.145.71
4210.7.145.72/2910.7.145.73 – 10.7.145.7810.7.145.79
4310.7.145.80/2910.7.145.81 – 10.7.145.8610.7.145.87
4410.7.145.88/2910.7.145.89 – 10.7.145.9410.7.145.95
4510.7.145.96/2910.7.145.97 – 10.7.145.10210.7.145.103
4610.7.145.104/2910.7.145.105 – 10.7.145.11010.7.145.111
4710.7.145.112/2910.7.145.113 – 10.7.145.11810.7.145.119
4810.7.145.120/2910.7.145.121 – 10.7.145.12610.7.145.127
4910.7.145.128/2910.7.145.129 – 10.7.145.13410.7.145.135
5010.7.145.136/2910.7.145.137 – 10.7.145.14210.7.145.143
5110.7.145.144/2910.7.145.145 – 10.7.145.15010.7.145.151
5210.7.145.152/2910.7.145.153 – 10.7.145.15810.7.145.159
5310.7.145.160/2910.7.145.161 – 10.7.145.16610.7.145.167
5410.7.145.168/2910.7.145.169 – 10.7.145.17410.7.145.175
5510.7.145.176/2910.7.145.177 – 10.7.145.18210.7.145.183
5610.7.145.184/2910.7.145.185 – 10.7.145.19010.7.145.191
5710.7.145.192/2910.7.145.193 – 10.7.145.19810.7.145.199
5810.7.145.200/2910.7.145.201 – 10.7.145.20610.7.145.207
5910.7.145.208/2910.7.145.209 – 10.7.145.21410.7.145.215
6010.7.145.216/2910.7.145.217 – 10.7.145.22210.7.145.223
6110.7.145.224/2910.7.145.225 – 10.7.145.23010.7.145.231
6210.7.145.232/2910.7.145.233 – 10.7.145.23810.7.145.239
6310.7.145.240/2910.7.145.241 – 10.7.145.24610.7.145.247
6410.7.145.248/2910.7.145.249 – 10.7.145.25410.7.145.255
6510.7.146.0/2910.7.146.1 – 10.7.146.610.7.146.7
6610.7.146.8/2910.7.146.9 – 10.7.146.1410.7.146.15
6710.7.146.16/2910.7.146.17 – 10.7.146.2210.7.146.23
6810.7.146.24/2910.7.146.25 – 10.7.146.3010.7.146.31
6910.7.146.32/2910.7.146.33 – 10.7.146.3810.7.146.39
7010.7.146.40/2910.7.146.41 – 10.7.146.4610.7.146.47
7110.7.146.48/2910.7.146.49 – 10.7.146.5410.7.146.55
7210.7.146.56/2910.7.146.57 – 10.7.146.6210.7.146.63
7310.7.146.64/2910.7.146.65 – 10.7.146.7010.7.146.71
7410.7.146.72/2910.7.146.73 – 10.7.146.7810.7.146.79
7510.7.146.80/2910.7.146.81 – 10.7.146.8610.7.146.87
7610.7.146.88/2910.7.146.89 – 10.7.146.9410.7.146.95
7710.7.146.96/2910.7.146.97 – 10.7.146.10210.7.146.103
7810.7.146.104/2910.7.146.105 – 10.7.146.11010.7.146.111
7910.7.146.112/2910.7.146.113 – 10.7.146.11810.7.146.119
8010.7.146.120/2910.7.146.121 – 10.7.146.12610.7.146.127
8110.7.146.128/2910.7.146.129 – 10.7.146.13410.7.146.135
8210.7.146.136/2910.7.146.137 – 10.7.146.14210.7.146.143
8310.7.146.144/2910.7.146.145 – 10.7.146.15010.7.146.151
8410.7.146.152/2910.7.146.153 – 10.7.146.15810.7.146.159
8510.7.146.160/2910.7.146.161 – 10.7.146.16610.7.146.167
8610.7.146.168/2910.7.146.169 – 10.7.146.17410.7.146.175
8710.7.146.176/2910.7.146.177 – 10.7.146.18210.7.146.183
8810.7.146.184/2910.7.146.185 – 10.7.146.19010.7.146.191
8910.7.146.192/2910.7.146.193 – 10.7.146.19810.7.146.199
9010.7.146.200/2910.7.146.201 – 10.7.146.20610.7.146.207
9110.7.146.208/2910.7.146.209 – 10.7.146.21410.7.146.215
9210.7.146.216/2910.7.146.217 – 10.7.146.22210.7.146.223
9310.7.146.224/2910.7.146.225 – 10.7.146.23010.7.146.231
9410.7.146.232/2910.7.146.233 – 10.7.146.23810.7.146.239
9510.7.146.240/2910.7.146.241 – 10.7.146.24610.7.146.247
9610.7.146.248/2910.7.146.249 – 10.7.146.25410.7.146.255
9710.7.147.0/2910.7.147.1 – 10.7.147.610.7.147.7
9810.7.147.8/2910.7.147.9 – 10.7.147.1410.7.147.15
9910.7.147.16/2910.7.147.17 – 10.7.147.2210.7.147.23
10010.7.147.24/2910.7.147.25 – 10.7.147.3010.7.147.31
10110.7.147.32/2910.7.147.33 – 10.7.147.3810.7.147.39
10210.7.147.40/2910.7.147.41 – 10.7.147.4610.7.147.47
10310.7.147.48/2910.7.147.49 – 10.7.147.5410.7.147.55
10410.7.147.56/2910.7.147.57 – 10.7.147.6210.7.147.63
10510.7.147.64/2910.7.147.65 – 10.7.147.7010.7.147.71
10610.7.147.72/2910.7.147.73 – 10.7.147.7810.7.147.79
10710.7.147.80/2910.7.147.81 – 10.7.147.8610.7.147.87
10810.7.147.88/2910.7.147.89 – 10.7.147.9410.7.147.95
10910.7.147.96/2910.7.147.97 – 10.7.147.10210.7.147.103
11010.7.147.104/2910.7.147.105 – 10.7.147.11010.7.147.111
11110.7.147.112/2910.7.147.113 – 10.7.147.11810.7.147.119
11210.7.147.120/2910.7.147.121 – 10.7.147.12610.7.147.127
11310.7.147.128/2910.7.147.129 – 10.7.147.13410.7.147.135
11410.7.147.136/2910.7.147.137 – 10.7.147.14210.7.147.143
11510.7.147.144/2910.7.147.145 – 10.7.147.15010.7.147.151
11610.7.147.152/2910.7.147.153 – 10.7.147.15810.7.147.159
11710.7.147.160/2910.7.147.161 – 10.7.147.16610.7.147.167
11810.7.147.168/2910.7.147.169 – 10.7.147.17410.7.147.175
11910.7.147.176/2910.7.147.177 – 10.7.147.18210.7.147.183
12010.7.147.184/2910.7.147.185 – 10.7.147.19010.7.147.191
12110.7.147.192/2910.7.147.193 – 10.7.147.19810.7.147.199
12210.7.147.200/2910.7.147.201 – 10.7.147.20610.7.147.207
12310.7.147.208/2910.7.147.209 – 10.7.147.21410.7.147.215
12410.7.147.216/2910.7.147.217 – 10.7.147.22210.7.147.223
12510.7.147.224/2910.7.147.225 – 10.7.147.23010.7.147.231
12610.7.147.232/2910.7.147.233 – 10.7.147.23810.7.147.239
12710.7.147.240/2910.7.147.241 – 10.7.147.24610.7.147.247
12810.7.147.248/2910.7.147.249 – 10.7.147.25410.7.147.255
12910.7.148.0/2910.7.148.1 – 10.7.148.610.7.148.7
13010.7.148.8/2910.7.148.9 – 10.7.148.1410.7.148.15
13110.7.148.16/2910.7.148.17 – 10.7.148.2210.7.148.23
13210.7.148.24/2910.7.148.25 – 10.7.148.3010.7.148.31
13310.7.148.32/2910.7.148.33 – 10.7.148.3810.7.148.39
13410.7.148.40/2910.7.148.41 – 10.7.148.4610.7.148.47
13510.7.148.48/2910.7.148.49 – 10.7.148.5410.7.148.55
13610.7.148.56/2910.7.148.57 – 10.7.148.6210.7.148.63
13710.7.148.64/2910.7.148.65 – 10.7.148.7010.7.148.71
13810.7.148.72/2910.7.148.73 – 10.7.148.7810.7.148.79
13910.7.148.80/2910.7.148.81 – 10.7.148.8610.7.148.87
14010.7.148.88/2910.7.148.89 – 10.7.148.9410.7.148.95
14110.7.148.96/2910.7.148.97 – 10.7.148.10210.7.148.103
14210.7.148.104/2910.7.148.105 – 10.7.148.11010.7.148.111
14310.7.148.112/2910.7.148.113 – 10.7.148.11810.7.148.119
14410.7.148.120/2910.7.148.121 – 10.7.148.12610.7.148.127
14510.7.148.128/2910.7.148.129 – 10.7.148.13410.7.148.135
14610.7.148.136/2910.7.148.137 – 10.7.148.14210.7.148.143
14710.7.148.144/2910.7.148.145 – 10.7.148.15010.7.148.151
14810.7.148.152/2910.7.148.153 – 10.7.148.15810.7.148.159
14910.7.148.160/2910.7.148.161 – 10.7.148.16610.7.148.167
15010.7.148.168/2910.7.148.169 – 10.7.148.17410.7.148.175
15110.7.148.176/2910.7.148.177 – 10.7.148.18210.7.148.183
15210.7.148.184/2910.7.148.185 – 10.7.148.19010.7.148.191
15310.7.148.192/2910.7.148.193 – 10.7.148.19810.7.148.199
15410.7.148.200/2910.7.148.201 – 10.7.148.20610.7.148.207
15510.7.148.208/2910.7.148.209 – 10.7.148.21410.7.148.215
15610.7.148.216/2910.7.148.217 – 10.7.148.22210.7.148.223
15710.7.148.224/2910.7.148.225 – 10.7.148.23010.7.148.231
15810.7.148.232/2910.7.148.233 – 10.7.148.23810.7.148.239
15910.7.148.240/2910.7.148.241 – 10.7.148.24610.7.148.247
16010.7.148.248/2910.7.148.249 – 10.7.148.25410.7.148.255
16110.7.149.0/2910.7.149.1 – 10.7.149.610.7.149.7
16210.7.149.8/2910.7.149.9 – 10.7.149.1410.7.149.15
16310.7.149.16/2910.7.149.17 – 10.7.149.2210.7.149.23
16410.7.149.24/2910.7.149.25 – 10.7.149.3010.7.149.31
16510.7.149.32/2910.7.149.33 – 10.7.149.3810.7.149.39
16610.7.149.40/2910.7.149.41 – 10.7.149.4610.7.149.47
16710.7.149.48/2910.7.149.49 – 10.7.149.5410.7.149.55
16810.7.149.56/2910.7.149.57 – 10.7.149.6210.7.149.63
16910.7.149.64/2910.7.149.65 – 10.7.149.7010.7.149.71
17010.7.149.72/2910.7.149.73 – 10.7.149.7810.7.149.79
17110.7.149.80/2910.7.149.81 – 10.7.149.8610.7.149.87
17210.7.149.88/2910.7.149.89 – 10.7.149.9410.7.149.95
17310.7.149.96/2910.7.149.97 – 10.7.149.10210.7.149.103
17410.7.149.104/2910.7.149.105 – 10.7.149.11010.7.149.111
17510.7.149.112/2910.7.149.113 – 10.7.149.11810.7.149.119
17610.7.149.120/2910.7.149.121 – 10.7.149.12610.7.149.127
17710.7.149.128/2910.7.149.129 – 10.7.149.13410.7.149.135
17810.7.149.136/2910.7.149.137 – 10.7.149.14210.7.149.143
17910.7.149.144/2910.7.149.145 – 10.7.149.15010.7.149.151
18010.7.149.152/2910.7.149.153 – 10.7.149.15810.7.149.159
18110.7.149.160/2910.7.149.161 – 10.7.149.16610.7.149.167
18210.7.149.168/2910.7.149.169 – 10.7.149.17410.7.149.175
18310.7.149.176/2910.7.149.177 – 10.7.149.18210.7.149.183
18410.7.149.184/2910.7.149.185 – 10.7.149.19010.7.149.191
18510.7.149.192/2910.7.149.193 – 10.7.149.19810.7.149.199
18610.7.149.200/2910.7.149.201 – 10.7.149.20610.7.149.207
18710.7.149.208/2910.7.149.209 – 10.7.149.21410.7.149.215
18810.7.149.216/2910.7.149.217 – 10.7.149.22210.7.149.223
18910.7.149.224/2910.7.149.225 – 10.7.149.23010.7.149.231
19010.7.149.232/2910.7.149.233 – 10.7.149.23810.7.149.239
19110.7.149.240/2910.7.149.241 – 10.7.149.24610.7.149.247
19210.7.149.248/2910.7.149.249 – 10.7.149.25410.7.149.255
19310.7.150.0/2910.7.150.1 – 10.7.150.610.7.150.7
19410.7.150.8/2910.7.150.9 – 10.7.150.1410.7.150.15
19510.7.150.16/2910.7.150.17 – 10.7.150.2210.7.150.23
19610.7.150.24/2910.7.150.25 – 10.7.150.3010.7.150.31
19710.7.150.32/2910.7.150.33 – 10.7.150.3810.7.150.39
19810.7.150.40/2910.7.150.41 – 10.7.150.4610.7.150.47
19910.7.150.48/2910.7.150.49 – 10.7.150.5410.7.150.55
20010.7.150.56/2910.7.150.57 – 10.7.150.6210.7.150.63
20110.7.150.64/2910.7.150.65 – 10.7.150.7010.7.150.71
20210.7.150.72/2910.7.150.73 – 10.7.150.7810.7.150.79
20310.7.150.80/2910.7.150.81 – 10.7.150.8610.7.150.87
20410.7.150.88/2910.7.150.89 – 10.7.150.9410.7.150.95
20510.7.150.96/2910.7.150.97 – 10.7.150.10210.7.150.103
20610.7.150.104/2910.7.150.105 – 10.7.150.11010.7.150.111
20710.7.150.112/2910.7.150.113 – 10.7.150.11810.7.150.119
20810.7.150.120/2910.7.150.121 – 10.7.150.12610.7.150.127
20910.7.150.128/2910.7.150.129 – 10.7.150.13410.7.150.135
21010.7.150.136/2910.7.150.137 – 10.7.150.14210.7.150.143
21110.7.150.144/2910.7.150.145 – 10.7.150.15010.7.150.151
21210.7.150.152/2910.7.150.153 – 10.7.150.15810.7.150.159
21310.7.150.160/2910.7.150.161 – 10.7.150.16610.7.150.167
21410.7.150.168/2910.7.150.169 – 10.7.150.17410.7.150.175
21510.7.150.176/2910.7.150.177 – 10.7.150.18210.7.150.183
21610.7.150.184/2910.7.150.185 – 10.7.150.19010.7.150.191
21710.7.150.192/2910.7.150.193 – 10.7.150.19810.7.150.199
21810.7.150.200/2910.7.150.201 – 10.7.150.20610.7.150.207
21910.7.150.208/2910.7.150.209 – 10.7.150.21410.7.150.215
22010.7.150.216/2910.7.150.217 – 10.7.150.22210.7.150.223
22110.7.150.224/2910.7.150.225 – 10.7.150.23010.7.150.231
22210.7.150.232/2910.7.150.233 – 10.7.150.23810.7.150.239
22310.7.150.240/2910.7.150.241 – 10.7.150.24610.7.150.247
22410.7.150.248/2910.7.150.249 – 10.7.150.25410.7.150.255
22510.7.151.0/2910.7.151.1 – 10.7.151.610.7.151.7
22610.7.151.8/2910.7.151.9 – 10.7.151.1410.7.151.15
22710.7.151.16/2910.7.151.17 – 10.7.151.2210.7.151.23
22810.7.151.24/2910.7.151.25 – 10.7.151.3010.7.151.31
22910.7.151.32/2910.7.151.33 – 10.7.151.3810.7.151.39
23010.7.151.40/2910.7.151.41 – 10.7.151.4610.7.151.47
23110.7.151.48/2910.7.151.49 – 10.7.151.5410.7.151.55
23210.7.151.56/2910.7.151.57 – 10.7.151.6210.7.151.63
23310.7.151.64/2910.7.151.65 – 10.7.151.7010.7.151.71
23410.7.151.72/2910.7.151.73 – 10.7.151.7810.7.151.79
23510.7.151.80/2910.7.151.81 – 10.7.151.8610.7.151.87
23610.7.151.88/2910.7.151.89 – 10.7.151.9410.7.151.95
23710.7.151.96/2910.7.151.97 – 10.7.151.10210.7.151.103
23810.7.151.104/2910.7.151.105 – 10.7.151.11010.7.151.111
23910.7.151.112/2910.7.151.113 – 10.7.151.11810.7.151.119
24010.7.151.120/2910.7.151.121 – 10.7.151.12610.7.151.127
24110.7.151.128/2910.7.151.129 – 10.7.151.13410.7.151.135
24210.7.151.136/2910.7.151.137 – 10.7.151.14210.7.151.143
24310.7.151.144/2910.7.151.145 – 10.7.151.15010.7.151.151
24410.7.151.152/2910.7.151.153 – 10.7.151.15810.7.151.159
24510.7.151.160/2910.7.151.161 – 10.7.151.16610.7.151.167
24610.7.151.168/2910.7.151.169 – 10.7.151.17410.7.151.175
24710.7.151.176/2910.7.151.177 – 10.7.151.18210.7.151.183
24810.7.151.184/2910.7.151.185 – 10.7.151.19010.7.151.191
24910.7.151.192/2910.7.151.193 – 10.7.151.19810.7.151.199
25010.7.151.200/2910.7.151.201 – 10.7.151.20610.7.151.207
25110.7.151.208/2910.7.151.209 – 10.7.151.21410.7.151.215
25210.7.151.216/2910.7.151.217 – 10.7.151.22210.7.151.223
25310.7.151.224/2910.7.151.225 – 10.7.151.23010.7.151.231
25410.7.151.232/2910.7.151.233 – 10.7.151.23810.7.151.239
25510.7.151.240/2910.7.151.241 – 10.7.151.24610.7.151.247
25610.7.151.248/2910.7.151.249 – 10.7.151.25410.7.151.255
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 →