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)10.239.0.0/16
network10.239.0.0/16
broadcast10.239.255.255
first host10.239.0.1
last host10.239.255.254
subnet mask255.255.0.0
wildcard0.0.255.255
addresses65,536
usable hosts65,534
classA
ipcalc 10.239.0.0/16
address00001010.11101111.00000000.00000000
subnet mask11111111.11111111.00000000.00000000
network00001010.11101111.00000000.00000000
broadcast00001010.11101111.11111111.11111111
green = network part, grey = host part
hex0x0aef0000
decimal183435264
reverse dns0.0.239.10.in-addr.arpa
ipv4-mapped::ffff:aef:0

/16 split into /29 · 8,192 subnets

close ×
#networkhost rangebroadcast
110.239.0.0/2910.239.0.1 – 10.239.0.610.239.0.7
210.239.0.8/2910.239.0.9 – 10.239.0.1410.239.0.15
310.239.0.16/2910.239.0.17 – 10.239.0.2210.239.0.23
410.239.0.24/2910.239.0.25 – 10.239.0.3010.239.0.31
510.239.0.32/2910.239.0.33 – 10.239.0.3810.239.0.39
610.239.0.40/2910.239.0.41 – 10.239.0.4610.239.0.47
710.239.0.48/2910.239.0.49 – 10.239.0.5410.239.0.55
810.239.0.56/2910.239.0.57 – 10.239.0.6210.239.0.63
910.239.0.64/2910.239.0.65 – 10.239.0.7010.239.0.71
1010.239.0.72/2910.239.0.73 – 10.239.0.7810.239.0.79
1110.239.0.80/2910.239.0.81 – 10.239.0.8610.239.0.87
1210.239.0.88/2910.239.0.89 – 10.239.0.9410.239.0.95
1310.239.0.96/2910.239.0.97 – 10.239.0.10210.239.0.103
1410.239.0.104/2910.239.0.105 – 10.239.0.11010.239.0.111
1510.239.0.112/2910.239.0.113 – 10.239.0.11810.239.0.119
1610.239.0.120/2910.239.0.121 – 10.239.0.12610.239.0.127
1710.239.0.128/2910.239.0.129 – 10.239.0.13410.239.0.135
1810.239.0.136/2910.239.0.137 – 10.239.0.14210.239.0.143
1910.239.0.144/2910.239.0.145 – 10.239.0.15010.239.0.151
2010.239.0.152/2910.239.0.153 – 10.239.0.15810.239.0.159
2110.239.0.160/2910.239.0.161 – 10.239.0.16610.239.0.167
2210.239.0.168/2910.239.0.169 – 10.239.0.17410.239.0.175
2310.239.0.176/2910.239.0.177 – 10.239.0.18210.239.0.183
2410.239.0.184/2910.239.0.185 – 10.239.0.19010.239.0.191
2510.239.0.192/2910.239.0.193 – 10.239.0.19810.239.0.199
2610.239.0.200/2910.239.0.201 – 10.239.0.20610.239.0.207
2710.239.0.208/2910.239.0.209 – 10.239.0.21410.239.0.215
2810.239.0.216/2910.239.0.217 – 10.239.0.22210.239.0.223
2910.239.0.224/2910.239.0.225 – 10.239.0.23010.239.0.231
3010.239.0.232/2910.239.0.233 – 10.239.0.23810.239.0.239
3110.239.0.240/2910.239.0.241 – 10.239.0.24610.239.0.247
3210.239.0.248/2910.239.0.249 – 10.239.0.25410.239.0.255
3310.239.1.0/2910.239.1.1 – 10.239.1.610.239.1.7
3410.239.1.8/2910.239.1.9 – 10.239.1.1410.239.1.15
3510.239.1.16/2910.239.1.17 – 10.239.1.2210.239.1.23
3610.239.1.24/2910.239.1.25 – 10.239.1.3010.239.1.31
3710.239.1.32/2910.239.1.33 – 10.239.1.3810.239.1.39
3810.239.1.40/2910.239.1.41 – 10.239.1.4610.239.1.47
3910.239.1.48/2910.239.1.49 – 10.239.1.5410.239.1.55
4010.239.1.56/2910.239.1.57 – 10.239.1.6210.239.1.63
4110.239.1.64/2910.239.1.65 – 10.239.1.7010.239.1.71
4210.239.1.72/2910.239.1.73 – 10.239.1.7810.239.1.79
4310.239.1.80/2910.239.1.81 – 10.239.1.8610.239.1.87
4410.239.1.88/2910.239.1.89 – 10.239.1.9410.239.1.95
4510.239.1.96/2910.239.1.97 – 10.239.1.10210.239.1.103
4610.239.1.104/2910.239.1.105 – 10.239.1.11010.239.1.111
4710.239.1.112/2910.239.1.113 – 10.239.1.11810.239.1.119
4810.239.1.120/2910.239.1.121 – 10.239.1.12610.239.1.127
4910.239.1.128/2910.239.1.129 – 10.239.1.13410.239.1.135
5010.239.1.136/2910.239.1.137 – 10.239.1.14210.239.1.143
5110.239.1.144/2910.239.1.145 – 10.239.1.15010.239.1.151
5210.239.1.152/2910.239.1.153 – 10.239.1.15810.239.1.159
5310.239.1.160/2910.239.1.161 – 10.239.1.16610.239.1.167
5410.239.1.168/2910.239.1.169 – 10.239.1.17410.239.1.175
5510.239.1.176/2910.239.1.177 – 10.239.1.18210.239.1.183
5610.239.1.184/2910.239.1.185 – 10.239.1.19010.239.1.191
5710.239.1.192/2910.239.1.193 – 10.239.1.19810.239.1.199
5810.239.1.200/2910.239.1.201 – 10.239.1.20610.239.1.207
5910.239.1.208/2910.239.1.209 – 10.239.1.21410.239.1.215
6010.239.1.216/2910.239.1.217 – 10.239.1.22210.239.1.223
6110.239.1.224/2910.239.1.225 – 10.239.1.23010.239.1.231
6210.239.1.232/2910.239.1.233 – 10.239.1.23810.239.1.239
6310.239.1.240/2910.239.1.241 – 10.239.1.24610.239.1.247
6410.239.1.248/2910.239.1.249 – 10.239.1.25410.239.1.255
6510.239.2.0/2910.239.2.1 – 10.239.2.610.239.2.7
6610.239.2.8/2910.239.2.9 – 10.239.2.1410.239.2.15
6710.239.2.16/2910.239.2.17 – 10.239.2.2210.239.2.23
6810.239.2.24/2910.239.2.25 – 10.239.2.3010.239.2.31
6910.239.2.32/2910.239.2.33 – 10.239.2.3810.239.2.39
7010.239.2.40/2910.239.2.41 – 10.239.2.4610.239.2.47
7110.239.2.48/2910.239.2.49 – 10.239.2.5410.239.2.55
7210.239.2.56/2910.239.2.57 – 10.239.2.6210.239.2.63
7310.239.2.64/2910.239.2.65 – 10.239.2.7010.239.2.71
7410.239.2.72/2910.239.2.73 – 10.239.2.7810.239.2.79
7510.239.2.80/2910.239.2.81 – 10.239.2.8610.239.2.87
7610.239.2.88/2910.239.2.89 – 10.239.2.9410.239.2.95
7710.239.2.96/2910.239.2.97 – 10.239.2.10210.239.2.103
7810.239.2.104/2910.239.2.105 – 10.239.2.11010.239.2.111
7910.239.2.112/2910.239.2.113 – 10.239.2.11810.239.2.119
8010.239.2.120/2910.239.2.121 – 10.239.2.12610.239.2.127
8110.239.2.128/2910.239.2.129 – 10.239.2.13410.239.2.135
8210.239.2.136/2910.239.2.137 – 10.239.2.14210.239.2.143
8310.239.2.144/2910.239.2.145 – 10.239.2.15010.239.2.151
8410.239.2.152/2910.239.2.153 – 10.239.2.15810.239.2.159
8510.239.2.160/2910.239.2.161 – 10.239.2.16610.239.2.167
8610.239.2.168/2910.239.2.169 – 10.239.2.17410.239.2.175
8710.239.2.176/2910.239.2.177 – 10.239.2.18210.239.2.183
8810.239.2.184/2910.239.2.185 – 10.239.2.19010.239.2.191
8910.239.2.192/2910.239.2.193 – 10.239.2.19810.239.2.199
9010.239.2.200/2910.239.2.201 – 10.239.2.20610.239.2.207
9110.239.2.208/2910.239.2.209 – 10.239.2.21410.239.2.215
9210.239.2.216/2910.239.2.217 – 10.239.2.22210.239.2.223
9310.239.2.224/2910.239.2.225 – 10.239.2.23010.239.2.231
9410.239.2.232/2910.239.2.233 – 10.239.2.23810.239.2.239
9510.239.2.240/2910.239.2.241 – 10.239.2.24610.239.2.247
9610.239.2.248/2910.239.2.249 – 10.239.2.25410.239.2.255
9710.239.3.0/2910.239.3.1 – 10.239.3.610.239.3.7
9810.239.3.8/2910.239.3.9 – 10.239.3.1410.239.3.15
9910.239.3.16/2910.239.3.17 – 10.239.3.2210.239.3.23
10010.239.3.24/2910.239.3.25 – 10.239.3.3010.239.3.31
10110.239.3.32/2910.239.3.33 – 10.239.3.3810.239.3.39
10210.239.3.40/2910.239.3.41 – 10.239.3.4610.239.3.47
10310.239.3.48/2910.239.3.49 – 10.239.3.5410.239.3.55
10410.239.3.56/2910.239.3.57 – 10.239.3.6210.239.3.63
10510.239.3.64/2910.239.3.65 – 10.239.3.7010.239.3.71
10610.239.3.72/2910.239.3.73 – 10.239.3.7810.239.3.79
10710.239.3.80/2910.239.3.81 – 10.239.3.8610.239.3.87
10810.239.3.88/2910.239.3.89 – 10.239.3.9410.239.3.95
10910.239.3.96/2910.239.3.97 – 10.239.3.10210.239.3.103
11010.239.3.104/2910.239.3.105 – 10.239.3.11010.239.3.111
11110.239.3.112/2910.239.3.113 – 10.239.3.11810.239.3.119
11210.239.3.120/2910.239.3.121 – 10.239.3.12610.239.3.127
11310.239.3.128/2910.239.3.129 – 10.239.3.13410.239.3.135
11410.239.3.136/2910.239.3.137 – 10.239.3.14210.239.3.143
11510.239.3.144/2910.239.3.145 – 10.239.3.15010.239.3.151
11610.239.3.152/2910.239.3.153 – 10.239.3.15810.239.3.159
11710.239.3.160/2910.239.3.161 – 10.239.3.16610.239.3.167
11810.239.3.168/2910.239.3.169 – 10.239.3.17410.239.3.175
11910.239.3.176/2910.239.3.177 – 10.239.3.18210.239.3.183
12010.239.3.184/2910.239.3.185 – 10.239.3.19010.239.3.191
12110.239.3.192/2910.239.3.193 – 10.239.3.19810.239.3.199
12210.239.3.200/2910.239.3.201 – 10.239.3.20610.239.3.207
12310.239.3.208/2910.239.3.209 – 10.239.3.21410.239.3.215
12410.239.3.216/2910.239.3.217 – 10.239.3.22210.239.3.223
12510.239.3.224/2910.239.3.225 – 10.239.3.23010.239.3.231
12610.239.3.232/2910.239.3.233 – 10.239.3.23810.239.3.239
12710.239.3.240/2910.239.3.241 – 10.239.3.24610.239.3.247
12810.239.3.248/2910.239.3.249 – 10.239.3.25410.239.3.255
12910.239.4.0/2910.239.4.1 – 10.239.4.610.239.4.7
13010.239.4.8/2910.239.4.9 – 10.239.4.1410.239.4.15
13110.239.4.16/2910.239.4.17 – 10.239.4.2210.239.4.23
13210.239.4.24/2910.239.4.25 – 10.239.4.3010.239.4.31
13310.239.4.32/2910.239.4.33 – 10.239.4.3810.239.4.39
13410.239.4.40/2910.239.4.41 – 10.239.4.4610.239.4.47
13510.239.4.48/2910.239.4.49 – 10.239.4.5410.239.4.55
13610.239.4.56/2910.239.4.57 – 10.239.4.6210.239.4.63
13710.239.4.64/2910.239.4.65 – 10.239.4.7010.239.4.71
13810.239.4.72/2910.239.4.73 – 10.239.4.7810.239.4.79
13910.239.4.80/2910.239.4.81 – 10.239.4.8610.239.4.87
14010.239.4.88/2910.239.4.89 – 10.239.4.9410.239.4.95
14110.239.4.96/2910.239.4.97 – 10.239.4.10210.239.4.103
14210.239.4.104/2910.239.4.105 – 10.239.4.11010.239.4.111
14310.239.4.112/2910.239.4.113 – 10.239.4.11810.239.4.119
14410.239.4.120/2910.239.4.121 – 10.239.4.12610.239.4.127
14510.239.4.128/2910.239.4.129 – 10.239.4.13410.239.4.135
14610.239.4.136/2910.239.4.137 – 10.239.4.14210.239.4.143
14710.239.4.144/2910.239.4.145 – 10.239.4.15010.239.4.151
14810.239.4.152/2910.239.4.153 – 10.239.4.15810.239.4.159
14910.239.4.160/2910.239.4.161 – 10.239.4.16610.239.4.167
15010.239.4.168/2910.239.4.169 – 10.239.4.17410.239.4.175
15110.239.4.176/2910.239.4.177 – 10.239.4.18210.239.4.183
15210.239.4.184/2910.239.4.185 – 10.239.4.19010.239.4.191
15310.239.4.192/2910.239.4.193 – 10.239.4.19810.239.4.199
15410.239.4.200/2910.239.4.201 – 10.239.4.20610.239.4.207
15510.239.4.208/2910.239.4.209 – 10.239.4.21410.239.4.215
15610.239.4.216/2910.239.4.217 – 10.239.4.22210.239.4.223
15710.239.4.224/2910.239.4.225 – 10.239.4.23010.239.4.231
15810.239.4.232/2910.239.4.233 – 10.239.4.23810.239.4.239
15910.239.4.240/2910.239.4.241 – 10.239.4.24610.239.4.247
16010.239.4.248/2910.239.4.249 – 10.239.4.25410.239.4.255
16110.239.5.0/2910.239.5.1 – 10.239.5.610.239.5.7
16210.239.5.8/2910.239.5.9 – 10.239.5.1410.239.5.15
16310.239.5.16/2910.239.5.17 – 10.239.5.2210.239.5.23
16410.239.5.24/2910.239.5.25 – 10.239.5.3010.239.5.31
16510.239.5.32/2910.239.5.33 – 10.239.5.3810.239.5.39
16610.239.5.40/2910.239.5.41 – 10.239.5.4610.239.5.47
16710.239.5.48/2910.239.5.49 – 10.239.5.5410.239.5.55
16810.239.5.56/2910.239.5.57 – 10.239.5.6210.239.5.63
16910.239.5.64/2910.239.5.65 – 10.239.5.7010.239.5.71
17010.239.5.72/2910.239.5.73 – 10.239.5.7810.239.5.79
17110.239.5.80/2910.239.5.81 – 10.239.5.8610.239.5.87
17210.239.5.88/2910.239.5.89 – 10.239.5.9410.239.5.95
17310.239.5.96/2910.239.5.97 – 10.239.5.10210.239.5.103
17410.239.5.104/2910.239.5.105 – 10.239.5.11010.239.5.111
17510.239.5.112/2910.239.5.113 – 10.239.5.11810.239.5.119
17610.239.5.120/2910.239.5.121 – 10.239.5.12610.239.5.127
17710.239.5.128/2910.239.5.129 – 10.239.5.13410.239.5.135
17810.239.5.136/2910.239.5.137 – 10.239.5.14210.239.5.143
17910.239.5.144/2910.239.5.145 – 10.239.5.15010.239.5.151
18010.239.5.152/2910.239.5.153 – 10.239.5.15810.239.5.159
18110.239.5.160/2910.239.5.161 – 10.239.5.16610.239.5.167
18210.239.5.168/2910.239.5.169 – 10.239.5.17410.239.5.175
18310.239.5.176/2910.239.5.177 – 10.239.5.18210.239.5.183
18410.239.5.184/2910.239.5.185 – 10.239.5.19010.239.5.191
18510.239.5.192/2910.239.5.193 – 10.239.5.19810.239.5.199
18610.239.5.200/2910.239.5.201 – 10.239.5.20610.239.5.207
18710.239.5.208/2910.239.5.209 – 10.239.5.21410.239.5.215
18810.239.5.216/2910.239.5.217 – 10.239.5.22210.239.5.223
18910.239.5.224/2910.239.5.225 – 10.239.5.23010.239.5.231
19010.239.5.232/2910.239.5.233 – 10.239.5.23810.239.5.239
19110.239.5.240/2910.239.5.241 – 10.239.5.24610.239.5.247
19210.239.5.248/2910.239.5.249 – 10.239.5.25410.239.5.255
19310.239.6.0/2910.239.6.1 – 10.239.6.610.239.6.7
19410.239.6.8/2910.239.6.9 – 10.239.6.1410.239.6.15
19510.239.6.16/2910.239.6.17 – 10.239.6.2210.239.6.23
19610.239.6.24/2910.239.6.25 – 10.239.6.3010.239.6.31
19710.239.6.32/2910.239.6.33 – 10.239.6.3810.239.6.39
19810.239.6.40/2910.239.6.41 – 10.239.6.4610.239.6.47
19910.239.6.48/2910.239.6.49 – 10.239.6.5410.239.6.55
20010.239.6.56/2910.239.6.57 – 10.239.6.6210.239.6.63
20110.239.6.64/2910.239.6.65 – 10.239.6.7010.239.6.71
20210.239.6.72/2910.239.6.73 – 10.239.6.7810.239.6.79
20310.239.6.80/2910.239.6.81 – 10.239.6.8610.239.6.87
20410.239.6.88/2910.239.6.89 – 10.239.6.9410.239.6.95
20510.239.6.96/2910.239.6.97 – 10.239.6.10210.239.6.103
20610.239.6.104/2910.239.6.105 – 10.239.6.11010.239.6.111
20710.239.6.112/2910.239.6.113 – 10.239.6.11810.239.6.119
20810.239.6.120/2910.239.6.121 – 10.239.6.12610.239.6.127
20910.239.6.128/2910.239.6.129 – 10.239.6.13410.239.6.135
21010.239.6.136/2910.239.6.137 – 10.239.6.14210.239.6.143
21110.239.6.144/2910.239.6.145 – 10.239.6.15010.239.6.151
21210.239.6.152/2910.239.6.153 – 10.239.6.15810.239.6.159
21310.239.6.160/2910.239.6.161 – 10.239.6.16610.239.6.167
21410.239.6.168/2910.239.6.169 – 10.239.6.17410.239.6.175
21510.239.6.176/2910.239.6.177 – 10.239.6.18210.239.6.183
21610.239.6.184/2910.239.6.185 – 10.239.6.19010.239.6.191
21710.239.6.192/2910.239.6.193 – 10.239.6.19810.239.6.199
21810.239.6.200/2910.239.6.201 – 10.239.6.20610.239.6.207
21910.239.6.208/2910.239.6.209 – 10.239.6.21410.239.6.215
22010.239.6.216/2910.239.6.217 – 10.239.6.22210.239.6.223
22110.239.6.224/2910.239.6.225 – 10.239.6.23010.239.6.231
22210.239.6.232/2910.239.6.233 – 10.239.6.23810.239.6.239
22310.239.6.240/2910.239.6.241 – 10.239.6.24610.239.6.247
22410.239.6.248/2910.239.6.249 – 10.239.6.25410.239.6.255
22510.239.7.0/2910.239.7.1 – 10.239.7.610.239.7.7
22610.239.7.8/2910.239.7.9 – 10.239.7.1410.239.7.15
22710.239.7.16/2910.239.7.17 – 10.239.7.2210.239.7.23
22810.239.7.24/2910.239.7.25 – 10.239.7.3010.239.7.31
22910.239.7.32/2910.239.7.33 – 10.239.7.3810.239.7.39
23010.239.7.40/2910.239.7.41 – 10.239.7.4610.239.7.47
23110.239.7.48/2910.239.7.49 – 10.239.7.5410.239.7.55
23210.239.7.56/2910.239.7.57 – 10.239.7.6210.239.7.63
23310.239.7.64/2910.239.7.65 – 10.239.7.7010.239.7.71
23410.239.7.72/2910.239.7.73 – 10.239.7.7810.239.7.79
23510.239.7.80/2910.239.7.81 – 10.239.7.8610.239.7.87
23610.239.7.88/2910.239.7.89 – 10.239.7.9410.239.7.95
23710.239.7.96/2910.239.7.97 – 10.239.7.10210.239.7.103
23810.239.7.104/2910.239.7.105 – 10.239.7.11010.239.7.111
23910.239.7.112/2910.239.7.113 – 10.239.7.11810.239.7.119
24010.239.7.120/2910.239.7.121 – 10.239.7.12610.239.7.127
24110.239.7.128/2910.239.7.129 – 10.239.7.13410.239.7.135
24210.239.7.136/2910.239.7.137 – 10.239.7.14210.239.7.143
24310.239.7.144/2910.239.7.145 – 10.239.7.15010.239.7.151
24410.239.7.152/2910.239.7.153 – 10.239.7.15810.239.7.159
24510.239.7.160/2910.239.7.161 – 10.239.7.16610.239.7.167
24610.239.7.168/2910.239.7.169 – 10.239.7.17410.239.7.175
24710.239.7.176/2910.239.7.177 – 10.239.7.18210.239.7.183
24810.239.7.184/2910.239.7.185 – 10.239.7.19010.239.7.191
24910.239.7.192/2910.239.7.193 – 10.239.7.19810.239.7.199
25010.239.7.200/2910.239.7.201 – 10.239.7.20610.239.7.207
25110.239.7.208/2910.239.7.209 – 10.239.7.21410.239.7.215
25210.239.7.216/2910.239.7.217 – 10.239.7.22210.239.7.223
25310.239.7.224/2910.239.7.225 – 10.239.7.23010.239.7.231
25410.239.7.232/2910.239.7.233 – 10.239.7.23810.239.7.239
25510.239.7.240/2910.239.7.241 – 10.239.7.24610.239.7.247
25610.239.7.248/2910.239.7.249 – 10.239.7.25410.239.7.255

showing 256 of 8,192

01 / table

IPv4 CIDR prefix table.

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

prefixsubnet maskaddresseshostsin your /16
/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-
/16255.255.0.065,53665,5341
/17255.255.128.032,76832,7662 split →
/18255.255.192.016,38416,3824 split →
/19255.255.224.08,1928,1908 split →
/20255.255.240.04,0964,09416 split →
/21255.255.248.02,0482,04632 split →
/22255.255.252.01,0241,02264 split →
/23255.255.254.0512510128 split →
/24255.255.255.0256254256 split →
/25255.255.255.128128126512 split →
/26255.255.255.19264621,024 split →
/27255.255.255.22432302,048 split →
/28255.255.255.24016144,096 split →
/29255.255.255.248868,192 split →
/30255.255.255.2524216,384 split →
/31255.255.255.2542232,768 split →
/32255.255.255.2551165,536 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 →