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
private IP (RFC 1918)10.86.0.0/17
network10.86.0.0/17
broadcast10.86.127.255
first host10.86.0.1
last host10.86.127.254
subnet mask255.255.128.0
wildcard0.0.127.255
addresses32,768
usable hosts32,766
classA
ipcalc 10.86.0.0/17
address00001010.01010110.00000000.00000000
subnet mask11111111.11111111.10000000.00000000
network00001010.01010110.00000000.00000000
broadcast00001010.01010110.01111111.11111111
green = network part, grey = host part
hex0x0a560000
decimal173408256
reverse dns0.0.86.10.in-addr.arpa
ipv4-mapped::ffff:a56:0

/17 split into /29 · 4,096 subnets

close ×
#networkhost rangebroadcast
110.86.0.0/2910.86.0.1 – 10.86.0.610.86.0.7
210.86.0.8/2910.86.0.9 – 10.86.0.1410.86.0.15
310.86.0.16/2910.86.0.17 – 10.86.0.2210.86.0.23
410.86.0.24/2910.86.0.25 – 10.86.0.3010.86.0.31
510.86.0.32/2910.86.0.33 – 10.86.0.3810.86.0.39
610.86.0.40/2910.86.0.41 – 10.86.0.4610.86.0.47
710.86.0.48/2910.86.0.49 – 10.86.0.5410.86.0.55
810.86.0.56/2910.86.0.57 – 10.86.0.6210.86.0.63
910.86.0.64/2910.86.0.65 – 10.86.0.7010.86.0.71
1010.86.0.72/2910.86.0.73 – 10.86.0.7810.86.0.79
1110.86.0.80/2910.86.0.81 – 10.86.0.8610.86.0.87
1210.86.0.88/2910.86.0.89 – 10.86.0.9410.86.0.95
1310.86.0.96/2910.86.0.97 – 10.86.0.10210.86.0.103
1410.86.0.104/2910.86.0.105 – 10.86.0.11010.86.0.111
1510.86.0.112/2910.86.0.113 – 10.86.0.11810.86.0.119
1610.86.0.120/2910.86.0.121 – 10.86.0.12610.86.0.127
1710.86.0.128/2910.86.0.129 – 10.86.0.13410.86.0.135
1810.86.0.136/2910.86.0.137 – 10.86.0.14210.86.0.143
1910.86.0.144/2910.86.0.145 – 10.86.0.15010.86.0.151
2010.86.0.152/2910.86.0.153 – 10.86.0.15810.86.0.159
2110.86.0.160/2910.86.0.161 – 10.86.0.16610.86.0.167
2210.86.0.168/2910.86.0.169 – 10.86.0.17410.86.0.175
2310.86.0.176/2910.86.0.177 – 10.86.0.18210.86.0.183
2410.86.0.184/2910.86.0.185 – 10.86.0.19010.86.0.191
2510.86.0.192/2910.86.0.193 – 10.86.0.19810.86.0.199
2610.86.0.200/2910.86.0.201 – 10.86.0.20610.86.0.207
2710.86.0.208/2910.86.0.209 – 10.86.0.21410.86.0.215
2810.86.0.216/2910.86.0.217 – 10.86.0.22210.86.0.223
2910.86.0.224/2910.86.0.225 – 10.86.0.23010.86.0.231
3010.86.0.232/2910.86.0.233 – 10.86.0.23810.86.0.239
3110.86.0.240/2910.86.0.241 – 10.86.0.24610.86.0.247
3210.86.0.248/2910.86.0.249 – 10.86.0.25410.86.0.255
3310.86.1.0/2910.86.1.1 – 10.86.1.610.86.1.7
3410.86.1.8/2910.86.1.9 – 10.86.1.1410.86.1.15
3510.86.1.16/2910.86.1.17 – 10.86.1.2210.86.1.23
3610.86.1.24/2910.86.1.25 – 10.86.1.3010.86.1.31
3710.86.1.32/2910.86.1.33 – 10.86.1.3810.86.1.39
3810.86.1.40/2910.86.1.41 – 10.86.1.4610.86.1.47
3910.86.1.48/2910.86.1.49 – 10.86.1.5410.86.1.55
4010.86.1.56/2910.86.1.57 – 10.86.1.6210.86.1.63
4110.86.1.64/2910.86.1.65 – 10.86.1.7010.86.1.71
4210.86.1.72/2910.86.1.73 – 10.86.1.7810.86.1.79
4310.86.1.80/2910.86.1.81 – 10.86.1.8610.86.1.87
4410.86.1.88/2910.86.1.89 – 10.86.1.9410.86.1.95
4510.86.1.96/2910.86.1.97 – 10.86.1.10210.86.1.103
4610.86.1.104/2910.86.1.105 – 10.86.1.11010.86.1.111
4710.86.1.112/2910.86.1.113 – 10.86.1.11810.86.1.119
4810.86.1.120/2910.86.1.121 – 10.86.1.12610.86.1.127
4910.86.1.128/2910.86.1.129 – 10.86.1.13410.86.1.135
5010.86.1.136/2910.86.1.137 – 10.86.1.14210.86.1.143
5110.86.1.144/2910.86.1.145 – 10.86.1.15010.86.1.151
5210.86.1.152/2910.86.1.153 – 10.86.1.15810.86.1.159
5310.86.1.160/2910.86.1.161 – 10.86.1.16610.86.1.167
5410.86.1.168/2910.86.1.169 – 10.86.1.17410.86.1.175
5510.86.1.176/2910.86.1.177 – 10.86.1.18210.86.1.183
5610.86.1.184/2910.86.1.185 – 10.86.1.19010.86.1.191
5710.86.1.192/2910.86.1.193 – 10.86.1.19810.86.1.199
5810.86.1.200/2910.86.1.201 – 10.86.1.20610.86.1.207
5910.86.1.208/2910.86.1.209 – 10.86.1.21410.86.1.215
6010.86.1.216/2910.86.1.217 – 10.86.1.22210.86.1.223
6110.86.1.224/2910.86.1.225 – 10.86.1.23010.86.1.231
6210.86.1.232/2910.86.1.233 – 10.86.1.23810.86.1.239
6310.86.1.240/2910.86.1.241 – 10.86.1.24610.86.1.247
6410.86.1.248/2910.86.1.249 – 10.86.1.25410.86.1.255
6510.86.2.0/2910.86.2.1 – 10.86.2.610.86.2.7
6610.86.2.8/2910.86.2.9 – 10.86.2.1410.86.2.15
6710.86.2.16/2910.86.2.17 – 10.86.2.2210.86.2.23
6810.86.2.24/2910.86.2.25 – 10.86.2.3010.86.2.31
6910.86.2.32/2910.86.2.33 – 10.86.2.3810.86.2.39
7010.86.2.40/2910.86.2.41 – 10.86.2.4610.86.2.47
7110.86.2.48/2910.86.2.49 – 10.86.2.5410.86.2.55
7210.86.2.56/2910.86.2.57 – 10.86.2.6210.86.2.63
7310.86.2.64/2910.86.2.65 – 10.86.2.7010.86.2.71
7410.86.2.72/2910.86.2.73 – 10.86.2.7810.86.2.79
7510.86.2.80/2910.86.2.81 – 10.86.2.8610.86.2.87
7610.86.2.88/2910.86.2.89 – 10.86.2.9410.86.2.95
7710.86.2.96/2910.86.2.97 – 10.86.2.10210.86.2.103
7810.86.2.104/2910.86.2.105 – 10.86.2.11010.86.2.111
7910.86.2.112/2910.86.2.113 – 10.86.2.11810.86.2.119
8010.86.2.120/2910.86.2.121 – 10.86.2.12610.86.2.127
8110.86.2.128/2910.86.2.129 – 10.86.2.13410.86.2.135
8210.86.2.136/2910.86.2.137 – 10.86.2.14210.86.2.143
8310.86.2.144/2910.86.2.145 – 10.86.2.15010.86.2.151
8410.86.2.152/2910.86.2.153 – 10.86.2.15810.86.2.159
8510.86.2.160/2910.86.2.161 – 10.86.2.16610.86.2.167
8610.86.2.168/2910.86.2.169 – 10.86.2.17410.86.2.175
8710.86.2.176/2910.86.2.177 – 10.86.2.18210.86.2.183
8810.86.2.184/2910.86.2.185 – 10.86.2.19010.86.2.191
8910.86.2.192/2910.86.2.193 – 10.86.2.19810.86.2.199
9010.86.2.200/2910.86.2.201 – 10.86.2.20610.86.2.207
9110.86.2.208/2910.86.2.209 – 10.86.2.21410.86.2.215
9210.86.2.216/2910.86.2.217 – 10.86.2.22210.86.2.223
9310.86.2.224/2910.86.2.225 – 10.86.2.23010.86.2.231
9410.86.2.232/2910.86.2.233 – 10.86.2.23810.86.2.239
9510.86.2.240/2910.86.2.241 – 10.86.2.24610.86.2.247
9610.86.2.248/2910.86.2.249 – 10.86.2.25410.86.2.255
9710.86.3.0/2910.86.3.1 – 10.86.3.610.86.3.7
9810.86.3.8/2910.86.3.9 – 10.86.3.1410.86.3.15
9910.86.3.16/2910.86.3.17 – 10.86.3.2210.86.3.23
10010.86.3.24/2910.86.3.25 – 10.86.3.3010.86.3.31
10110.86.3.32/2910.86.3.33 – 10.86.3.3810.86.3.39
10210.86.3.40/2910.86.3.41 – 10.86.3.4610.86.3.47
10310.86.3.48/2910.86.3.49 – 10.86.3.5410.86.3.55
10410.86.3.56/2910.86.3.57 – 10.86.3.6210.86.3.63
10510.86.3.64/2910.86.3.65 – 10.86.3.7010.86.3.71
10610.86.3.72/2910.86.3.73 – 10.86.3.7810.86.3.79
10710.86.3.80/2910.86.3.81 – 10.86.3.8610.86.3.87
10810.86.3.88/2910.86.3.89 – 10.86.3.9410.86.3.95
10910.86.3.96/2910.86.3.97 – 10.86.3.10210.86.3.103
11010.86.3.104/2910.86.3.105 – 10.86.3.11010.86.3.111
11110.86.3.112/2910.86.3.113 – 10.86.3.11810.86.3.119
11210.86.3.120/2910.86.3.121 – 10.86.3.12610.86.3.127
11310.86.3.128/2910.86.3.129 – 10.86.3.13410.86.3.135
11410.86.3.136/2910.86.3.137 – 10.86.3.14210.86.3.143
11510.86.3.144/2910.86.3.145 – 10.86.3.15010.86.3.151
11610.86.3.152/2910.86.3.153 – 10.86.3.15810.86.3.159
11710.86.3.160/2910.86.3.161 – 10.86.3.16610.86.3.167
11810.86.3.168/2910.86.3.169 – 10.86.3.17410.86.3.175
11910.86.3.176/2910.86.3.177 – 10.86.3.18210.86.3.183
12010.86.3.184/2910.86.3.185 – 10.86.3.19010.86.3.191
12110.86.3.192/2910.86.3.193 – 10.86.3.19810.86.3.199
12210.86.3.200/2910.86.3.201 – 10.86.3.20610.86.3.207
12310.86.3.208/2910.86.3.209 – 10.86.3.21410.86.3.215
12410.86.3.216/2910.86.3.217 – 10.86.3.22210.86.3.223
12510.86.3.224/2910.86.3.225 – 10.86.3.23010.86.3.231
12610.86.3.232/2910.86.3.233 – 10.86.3.23810.86.3.239
12710.86.3.240/2910.86.3.241 – 10.86.3.24610.86.3.247
12810.86.3.248/2910.86.3.249 – 10.86.3.25410.86.3.255
12910.86.4.0/2910.86.4.1 – 10.86.4.610.86.4.7
13010.86.4.8/2910.86.4.9 – 10.86.4.1410.86.4.15
13110.86.4.16/2910.86.4.17 – 10.86.4.2210.86.4.23
13210.86.4.24/2910.86.4.25 – 10.86.4.3010.86.4.31
13310.86.4.32/2910.86.4.33 – 10.86.4.3810.86.4.39
13410.86.4.40/2910.86.4.41 – 10.86.4.4610.86.4.47
13510.86.4.48/2910.86.4.49 – 10.86.4.5410.86.4.55
13610.86.4.56/2910.86.4.57 – 10.86.4.6210.86.4.63
13710.86.4.64/2910.86.4.65 – 10.86.4.7010.86.4.71
13810.86.4.72/2910.86.4.73 – 10.86.4.7810.86.4.79
13910.86.4.80/2910.86.4.81 – 10.86.4.8610.86.4.87
14010.86.4.88/2910.86.4.89 – 10.86.4.9410.86.4.95
14110.86.4.96/2910.86.4.97 – 10.86.4.10210.86.4.103
14210.86.4.104/2910.86.4.105 – 10.86.4.11010.86.4.111
14310.86.4.112/2910.86.4.113 – 10.86.4.11810.86.4.119
14410.86.4.120/2910.86.4.121 – 10.86.4.12610.86.4.127
14510.86.4.128/2910.86.4.129 – 10.86.4.13410.86.4.135
14610.86.4.136/2910.86.4.137 – 10.86.4.14210.86.4.143
14710.86.4.144/2910.86.4.145 – 10.86.4.15010.86.4.151
14810.86.4.152/2910.86.4.153 – 10.86.4.15810.86.4.159
14910.86.4.160/2910.86.4.161 – 10.86.4.16610.86.4.167
15010.86.4.168/2910.86.4.169 – 10.86.4.17410.86.4.175
15110.86.4.176/2910.86.4.177 – 10.86.4.18210.86.4.183
15210.86.4.184/2910.86.4.185 – 10.86.4.19010.86.4.191
15310.86.4.192/2910.86.4.193 – 10.86.4.19810.86.4.199
15410.86.4.200/2910.86.4.201 – 10.86.4.20610.86.4.207
15510.86.4.208/2910.86.4.209 – 10.86.4.21410.86.4.215
15610.86.4.216/2910.86.4.217 – 10.86.4.22210.86.4.223
15710.86.4.224/2910.86.4.225 – 10.86.4.23010.86.4.231
15810.86.4.232/2910.86.4.233 – 10.86.4.23810.86.4.239
15910.86.4.240/2910.86.4.241 – 10.86.4.24610.86.4.247
16010.86.4.248/2910.86.4.249 – 10.86.4.25410.86.4.255
16110.86.5.0/2910.86.5.1 – 10.86.5.610.86.5.7
16210.86.5.8/2910.86.5.9 – 10.86.5.1410.86.5.15
16310.86.5.16/2910.86.5.17 – 10.86.5.2210.86.5.23
16410.86.5.24/2910.86.5.25 – 10.86.5.3010.86.5.31
16510.86.5.32/2910.86.5.33 – 10.86.5.3810.86.5.39
16610.86.5.40/2910.86.5.41 – 10.86.5.4610.86.5.47
16710.86.5.48/2910.86.5.49 – 10.86.5.5410.86.5.55
16810.86.5.56/2910.86.5.57 – 10.86.5.6210.86.5.63
16910.86.5.64/2910.86.5.65 – 10.86.5.7010.86.5.71
17010.86.5.72/2910.86.5.73 – 10.86.5.7810.86.5.79
17110.86.5.80/2910.86.5.81 – 10.86.5.8610.86.5.87
17210.86.5.88/2910.86.5.89 – 10.86.5.9410.86.5.95
17310.86.5.96/2910.86.5.97 – 10.86.5.10210.86.5.103
17410.86.5.104/2910.86.5.105 – 10.86.5.11010.86.5.111
17510.86.5.112/2910.86.5.113 – 10.86.5.11810.86.5.119
17610.86.5.120/2910.86.5.121 – 10.86.5.12610.86.5.127
17710.86.5.128/2910.86.5.129 – 10.86.5.13410.86.5.135
17810.86.5.136/2910.86.5.137 – 10.86.5.14210.86.5.143
17910.86.5.144/2910.86.5.145 – 10.86.5.15010.86.5.151
18010.86.5.152/2910.86.5.153 – 10.86.5.15810.86.5.159
18110.86.5.160/2910.86.5.161 – 10.86.5.16610.86.5.167
18210.86.5.168/2910.86.5.169 – 10.86.5.17410.86.5.175
18310.86.5.176/2910.86.5.177 – 10.86.5.18210.86.5.183
18410.86.5.184/2910.86.5.185 – 10.86.5.19010.86.5.191
18510.86.5.192/2910.86.5.193 – 10.86.5.19810.86.5.199
18610.86.5.200/2910.86.5.201 – 10.86.5.20610.86.5.207
18710.86.5.208/2910.86.5.209 – 10.86.5.21410.86.5.215
18810.86.5.216/2910.86.5.217 – 10.86.5.22210.86.5.223
18910.86.5.224/2910.86.5.225 – 10.86.5.23010.86.5.231
19010.86.5.232/2910.86.5.233 – 10.86.5.23810.86.5.239
19110.86.5.240/2910.86.5.241 – 10.86.5.24610.86.5.247
19210.86.5.248/2910.86.5.249 – 10.86.5.25410.86.5.255
19310.86.6.0/2910.86.6.1 – 10.86.6.610.86.6.7
19410.86.6.8/2910.86.6.9 – 10.86.6.1410.86.6.15
19510.86.6.16/2910.86.6.17 – 10.86.6.2210.86.6.23
19610.86.6.24/2910.86.6.25 – 10.86.6.3010.86.6.31
19710.86.6.32/2910.86.6.33 – 10.86.6.3810.86.6.39
19810.86.6.40/2910.86.6.41 – 10.86.6.4610.86.6.47
19910.86.6.48/2910.86.6.49 – 10.86.6.5410.86.6.55
20010.86.6.56/2910.86.6.57 – 10.86.6.6210.86.6.63
20110.86.6.64/2910.86.6.65 – 10.86.6.7010.86.6.71
20210.86.6.72/2910.86.6.73 – 10.86.6.7810.86.6.79
20310.86.6.80/2910.86.6.81 – 10.86.6.8610.86.6.87
20410.86.6.88/2910.86.6.89 – 10.86.6.9410.86.6.95
20510.86.6.96/2910.86.6.97 – 10.86.6.10210.86.6.103
20610.86.6.104/2910.86.6.105 – 10.86.6.11010.86.6.111
20710.86.6.112/2910.86.6.113 – 10.86.6.11810.86.6.119
20810.86.6.120/2910.86.6.121 – 10.86.6.12610.86.6.127
20910.86.6.128/2910.86.6.129 – 10.86.6.13410.86.6.135
21010.86.6.136/2910.86.6.137 – 10.86.6.14210.86.6.143
21110.86.6.144/2910.86.6.145 – 10.86.6.15010.86.6.151
21210.86.6.152/2910.86.6.153 – 10.86.6.15810.86.6.159
21310.86.6.160/2910.86.6.161 – 10.86.6.16610.86.6.167
21410.86.6.168/2910.86.6.169 – 10.86.6.17410.86.6.175
21510.86.6.176/2910.86.6.177 – 10.86.6.18210.86.6.183
21610.86.6.184/2910.86.6.185 – 10.86.6.19010.86.6.191
21710.86.6.192/2910.86.6.193 – 10.86.6.19810.86.6.199
21810.86.6.200/2910.86.6.201 – 10.86.6.20610.86.6.207
21910.86.6.208/2910.86.6.209 – 10.86.6.21410.86.6.215
22010.86.6.216/2910.86.6.217 – 10.86.6.22210.86.6.223
22110.86.6.224/2910.86.6.225 – 10.86.6.23010.86.6.231
22210.86.6.232/2910.86.6.233 – 10.86.6.23810.86.6.239
22310.86.6.240/2910.86.6.241 – 10.86.6.24610.86.6.247
22410.86.6.248/2910.86.6.249 – 10.86.6.25410.86.6.255
22510.86.7.0/2910.86.7.1 – 10.86.7.610.86.7.7
22610.86.7.8/2910.86.7.9 – 10.86.7.1410.86.7.15
22710.86.7.16/2910.86.7.17 – 10.86.7.2210.86.7.23
22810.86.7.24/2910.86.7.25 – 10.86.7.3010.86.7.31
22910.86.7.32/2910.86.7.33 – 10.86.7.3810.86.7.39
23010.86.7.40/2910.86.7.41 – 10.86.7.4610.86.7.47
23110.86.7.48/2910.86.7.49 – 10.86.7.5410.86.7.55
23210.86.7.56/2910.86.7.57 – 10.86.7.6210.86.7.63
23310.86.7.64/2910.86.7.65 – 10.86.7.7010.86.7.71
23410.86.7.72/2910.86.7.73 – 10.86.7.7810.86.7.79
23510.86.7.80/2910.86.7.81 – 10.86.7.8610.86.7.87
23610.86.7.88/2910.86.7.89 – 10.86.7.9410.86.7.95
23710.86.7.96/2910.86.7.97 – 10.86.7.10210.86.7.103
23810.86.7.104/2910.86.7.105 – 10.86.7.11010.86.7.111
23910.86.7.112/2910.86.7.113 – 10.86.7.11810.86.7.119
24010.86.7.120/2910.86.7.121 – 10.86.7.12610.86.7.127
24110.86.7.128/2910.86.7.129 – 10.86.7.13410.86.7.135
24210.86.7.136/2910.86.7.137 – 10.86.7.14210.86.7.143
24310.86.7.144/2910.86.7.145 – 10.86.7.15010.86.7.151
24410.86.7.152/2910.86.7.153 – 10.86.7.15810.86.7.159
24510.86.7.160/2910.86.7.161 – 10.86.7.16610.86.7.167
24610.86.7.168/2910.86.7.169 – 10.86.7.17410.86.7.175
24710.86.7.176/2910.86.7.177 – 10.86.7.18210.86.7.183
24810.86.7.184/2910.86.7.185 – 10.86.7.19010.86.7.191
24910.86.7.192/2910.86.7.193 – 10.86.7.19810.86.7.199
25010.86.7.200/2910.86.7.201 – 10.86.7.20610.86.7.207
25110.86.7.208/2910.86.7.209 – 10.86.7.21410.86.7.215
25210.86.7.216/2910.86.7.217 – 10.86.7.22210.86.7.223
25310.86.7.224/2910.86.7.225 – 10.86.7.23010.86.7.231
25410.86.7.232/2910.86.7.233 – 10.86.7.23810.86.7.239
25510.86.7.240/2910.86.7.241 – 10.86.7.24610.86.7.247
25610.86.7.248/2910.86.7.249 – 10.86.7.25410.86.7.255

showing 256 of 4,096

01 / table

IPv4 CIDR prefix table.

Click a prefix longer than your network to split it into subnets.

prefixsubnet maskaddresseshostsin your /17
/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-
/17255.255.128.032,76832,7661
/18255.255.192.016,38416,3822 split →
/19255.255.224.08,1928,1904 split →
/20255.255.240.04,0964,0948 split →
/21255.255.248.02,0482,04616 split →
/22255.255.252.01,0241,02232 split →
/23255.255.254.051251064 split →
/24255.255.255.0256254128 split →
/25255.255.255.128128126256 split →
/26255.255.255.1926462512 split →
/27255.255.255.22432301,024 split →
/28255.255.255.24016142,048 split →
/29255.255.255.248864,096 split →
/30255.255.255.252428,192 split →
/31255.255.255.2542216,384 split →
/32255.255.255.2551132,768 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 →