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)10.78.0.0/17
network10.78.0.0/17
broadcast10.78.127.255
first host10.78.0.1
last host10.78.127.254
subnet mask255.255.128.0
wildcard0.0.127.255
addresses32,768
usable hosts32,766
classA
ipcalc 10.78.0.0/17
address00001010.01001110.00000000.00000000
subnet mask11111111.11111111.10000000.00000000
network00001010.01001110.00000000.00000000
broadcast00001010.01001110.01111111.11111111
green = network part, grey = host part
hex0x0a4e0000
decimal172883968
reverse dns0.0.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:0

/17 split into /28 · 2,048 subnets

close ×
#networkhost rangebroadcast
110.78.0.0/2810.78.0.1 – 10.78.0.1410.78.0.15
210.78.0.16/2810.78.0.17 – 10.78.0.3010.78.0.31
310.78.0.32/2810.78.0.33 – 10.78.0.4610.78.0.47
410.78.0.48/2810.78.0.49 – 10.78.0.6210.78.0.63
510.78.0.64/2810.78.0.65 – 10.78.0.7810.78.0.79
610.78.0.80/2810.78.0.81 – 10.78.0.9410.78.0.95
710.78.0.96/2810.78.0.97 – 10.78.0.11010.78.0.111
810.78.0.112/2810.78.0.113 – 10.78.0.12610.78.0.127
910.78.0.128/2810.78.0.129 – 10.78.0.14210.78.0.143
1010.78.0.144/2810.78.0.145 – 10.78.0.15810.78.0.159
1110.78.0.160/2810.78.0.161 – 10.78.0.17410.78.0.175
1210.78.0.176/2810.78.0.177 – 10.78.0.19010.78.0.191
1310.78.0.192/2810.78.0.193 – 10.78.0.20610.78.0.207
1410.78.0.208/2810.78.0.209 – 10.78.0.22210.78.0.223
1510.78.0.224/2810.78.0.225 – 10.78.0.23810.78.0.239
1610.78.0.240/2810.78.0.241 – 10.78.0.25410.78.0.255
1710.78.1.0/2810.78.1.1 – 10.78.1.1410.78.1.15
1810.78.1.16/2810.78.1.17 – 10.78.1.3010.78.1.31
1910.78.1.32/2810.78.1.33 – 10.78.1.4610.78.1.47
2010.78.1.48/2810.78.1.49 – 10.78.1.6210.78.1.63
2110.78.1.64/2810.78.1.65 – 10.78.1.7810.78.1.79
2210.78.1.80/2810.78.1.81 – 10.78.1.9410.78.1.95
2310.78.1.96/2810.78.1.97 – 10.78.1.11010.78.1.111
2410.78.1.112/2810.78.1.113 – 10.78.1.12610.78.1.127
2510.78.1.128/2810.78.1.129 – 10.78.1.14210.78.1.143
2610.78.1.144/2810.78.1.145 – 10.78.1.15810.78.1.159
2710.78.1.160/2810.78.1.161 – 10.78.1.17410.78.1.175
2810.78.1.176/2810.78.1.177 – 10.78.1.19010.78.1.191
2910.78.1.192/2810.78.1.193 – 10.78.1.20610.78.1.207
3010.78.1.208/2810.78.1.209 – 10.78.1.22210.78.1.223
3110.78.1.224/2810.78.1.225 – 10.78.1.23810.78.1.239
3210.78.1.240/2810.78.1.241 – 10.78.1.25410.78.1.255
3310.78.2.0/2810.78.2.1 – 10.78.2.1410.78.2.15
3410.78.2.16/2810.78.2.17 – 10.78.2.3010.78.2.31
3510.78.2.32/2810.78.2.33 – 10.78.2.4610.78.2.47
3610.78.2.48/2810.78.2.49 – 10.78.2.6210.78.2.63
3710.78.2.64/2810.78.2.65 – 10.78.2.7810.78.2.79
3810.78.2.80/2810.78.2.81 – 10.78.2.9410.78.2.95
3910.78.2.96/2810.78.2.97 – 10.78.2.11010.78.2.111
4010.78.2.112/2810.78.2.113 – 10.78.2.12610.78.2.127
4110.78.2.128/2810.78.2.129 – 10.78.2.14210.78.2.143
4210.78.2.144/2810.78.2.145 – 10.78.2.15810.78.2.159
4310.78.2.160/2810.78.2.161 – 10.78.2.17410.78.2.175
4410.78.2.176/2810.78.2.177 – 10.78.2.19010.78.2.191
4510.78.2.192/2810.78.2.193 – 10.78.2.20610.78.2.207
4610.78.2.208/2810.78.2.209 – 10.78.2.22210.78.2.223
4710.78.2.224/2810.78.2.225 – 10.78.2.23810.78.2.239
4810.78.2.240/2810.78.2.241 – 10.78.2.25410.78.2.255
4910.78.3.0/2810.78.3.1 – 10.78.3.1410.78.3.15
5010.78.3.16/2810.78.3.17 – 10.78.3.3010.78.3.31
5110.78.3.32/2810.78.3.33 – 10.78.3.4610.78.3.47
5210.78.3.48/2810.78.3.49 – 10.78.3.6210.78.3.63
5310.78.3.64/2810.78.3.65 – 10.78.3.7810.78.3.79
5410.78.3.80/2810.78.3.81 – 10.78.3.9410.78.3.95
5510.78.3.96/2810.78.3.97 – 10.78.3.11010.78.3.111
5610.78.3.112/2810.78.3.113 – 10.78.3.12610.78.3.127
5710.78.3.128/2810.78.3.129 – 10.78.3.14210.78.3.143
5810.78.3.144/2810.78.3.145 – 10.78.3.15810.78.3.159
5910.78.3.160/2810.78.3.161 – 10.78.3.17410.78.3.175
6010.78.3.176/2810.78.3.177 – 10.78.3.19010.78.3.191
6110.78.3.192/2810.78.3.193 – 10.78.3.20610.78.3.207
6210.78.3.208/2810.78.3.209 – 10.78.3.22210.78.3.223
6310.78.3.224/2810.78.3.225 – 10.78.3.23810.78.3.239
6410.78.3.240/2810.78.3.241 – 10.78.3.25410.78.3.255
6510.78.4.0/2810.78.4.1 – 10.78.4.1410.78.4.15
6610.78.4.16/2810.78.4.17 – 10.78.4.3010.78.4.31
6710.78.4.32/2810.78.4.33 – 10.78.4.4610.78.4.47
6810.78.4.48/2810.78.4.49 – 10.78.4.6210.78.4.63
6910.78.4.64/2810.78.4.65 – 10.78.4.7810.78.4.79
7010.78.4.80/2810.78.4.81 – 10.78.4.9410.78.4.95
7110.78.4.96/2810.78.4.97 – 10.78.4.11010.78.4.111
7210.78.4.112/2810.78.4.113 – 10.78.4.12610.78.4.127
7310.78.4.128/2810.78.4.129 – 10.78.4.14210.78.4.143
7410.78.4.144/2810.78.4.145 – 10.78.4.15810.78.4.159
7510.78.4.160/2810.78.4.161 – 10.78.4.17410.78.4.175
7610.78.4.176/2810.78.4.177 – 10.78.4.19010.78.4.191
7710.78.4.192/2810.78.4.193 – 10.78.4.20610.78.4.207
7810.78.4.208/2810.78.4.209 – 10.78.4.22210.78.4.223
7910.78.4.224/2810.78.4.225 – 10.78.4.23810.78.4.239
8010.78.4.240/2810.78.4.241 – 10.78.4.25410.78.4.255
8110.78.5.0/2810.78.5.1 – 10.78.5.1410.78.5.15
8210.78.5.16/2810.78.5.17 – 10.78.5.3010.78.5.31
8310.78.5.32/2810.78.5.33 – 10.78.5.4610.78.5.47
8410.78.5.48/2810.78.5.49 – 10.78.5.6210.78.5.63
8510.78.5.64/2810.78.5.65 – 10.78.5.7810.78.5.79
8610.78.5.80/2810.78.5.81 – 10.78.5.9410.78.5.95
8710.78.5.96/2810.78.5.97 – 10.78.5.11010.78.5.111
8810.78.5.112/2810.78.5.113 – 10.78.5.12610.78.5.127
8910.78.5.128/2810.78.5.129 – 10.78.5.14210.78.5.143
9010.78.5.144/2810.78.5.145 – 10.78.5.15810.78.5.159
9110.78.5.160/2810.78.5.161 – 10.78.5.17410.78.5.175
9210.78.5.176/2810.78.5.177 – 10.78.5.19010.78.5.191
9310.78.5.192/2810.78.5.193 – 10.78.5.20610.78.5.207
9410.78.5.208/2810.78.5.209 – 10.78.5.22210.78.5.223
9510.78.5.224/2810.78.5.225 – 10.78.5.23810.78.5.239
9610.78.5.240/2810.78.5.241 – 10.78.5.25410.78.5.255
9710.78.6.0/2810.78.6.1 – 10.78.6.1410.78.6.15
9810.78.6.16/2810.78.6.17 – 10.78.6.3010.78.6.31
9910.78.6.32/2810.78.6.33 – 10.78.6.4610.78.6.47
10010.78.6.48/2810.78.6.49 – 10.78.6.6210.78.6.63
10110.78.6.64/2810.78.6.65 – 10.78.6.7810.78.6.79
10210.78.6.80/2810.78.6.81 – 10.78.6.9410.78.6.95
10310.78.6.96/2810.78.6.97 – 10.78.6.11010.78.6.111
10410.78.6.112/2810.78.6.113 – 10.78.6.12610.78.6.127
10510.78.6.128/2810.78.6.129 – 10.78.6.14210.78.6.143
10610.78.6.144/2810.78.6.145 – 10.78.6.15810.78.6.159
10710.78.6.160/2810.78.6.161 – 10.78.6.17410.78.6.175
10810.78.6.176/2810.78.6.177 – 10.78.6.19010.78.6.191
10910.78.6.192/2810.78.6.193 – 10.78.6.20610.78.6.207
11010.78.6.208/2810.78.6.209 – 10.78.6.22210.78.6.223
11110.78.6.224/2810.78.6.225 – 10.78.6.23810.78.6.239
11210.78.6.240/2810.78.6.241 – 10.78.6.25410.78.6.255
11310.78.7.0/2810.78.7.1 – 10.78.7.1410.78.7.15
11410.78.7.16/2810.78.7.17 – 10.78.7.3010.78.7.31
11510.78.7.32/2810.78.7.33 – 10.78.7.4610.78.7.47
11610.78.7.48/2810.78.7.49 – 10.78.7.6210.78.7.63
11710.78.7.64/2810.78.7.65 – 10.78.7.7810.78.7.79
11810.78.7.80/2810.78.7.81 – 10.78.7.9410.78.7.95
11910.78.7.96/2810.78.7.97 – 10.78.7.11010.78.7.111
12010.78.7.112/2810.78.7.113 – 10.78.7.12610.78.7.127
12110.78.7.128/2810.78.7.129 – 10.78.7.14210.78.7.143
12210.78.7.144/2810.78.7.145 – 10.78.7.15810.78.7.159
12310.78.7.160/2810.78.7.161 – 10.78.7.17410.78.7.175
12410.78.7.176/2810.78.7.177 – 10.78.7.19010.78.7.191
12510.78.7.192/2810.78.7.193 – 10.78.7.20610.78.7.207
12610.78.7.208/2810.78.7.209 – 10.78.7.22210.78.7.223
12710.78.7.224/2810.78.7.225 – 10.78.7.23810.78.7.239
12810.78.7.240/2810.78.7.241 – 10.78.7.25410.78.7.255
12910.78.8.0/2810.78.8.1 – 10.78.8.1410.78.8.15
13010.78.8.16/2810.78.8.17 – 10.78.8.3010.78.8.31
13110.78.8.32/2810.78.8.33 – 10.78.8.4610.78.8.47
13210.78.8.48/2810.78.8.49 – 10.78.8.6210.78.8.63
13310.78.8.64/2810.78.8.65 – 10.78.8.7810.78.8.79
13410.78.8.80/2810.78.8.81 – 10.78.8.9410.78.8.95
13510.78.8.96/2810.78.8.97 – 10.78.8.11010.78.8.111
13610.78.8.112/2810.78.8.113 – 10.78.8.12610.78.8.127
13710.78.8.128/2810.78.8.129 – 10.78.8.14210.78.8.143
13810.78.8.144/2810.78.8.145 – 10.78.8.15810.78.8.159
13910.78.8.160/2810.78.8.161 – 10.78.8.17410.78.8.175
14010.78.8.176/2810.78.8.177 – 10.78.8.19010.78.8.191
14110.78.8.192/2810.78.8.193 – 10.78.8.20610.78.8.207
14210.78.8.208/2810.78.8.209 – 10.78.8.22210.78.8.223
14310.78.8.224/2810.78.8.225 – 10.78.8.23810.78.8.239
14410.78.8.240/2810.78.8.241 – 10.78.8.25410.78.8.255
14510.78.9.0/2810.78.9.1 – 10.78.9.1410.78.9.15
14610.78.9.16/2810.78.9.17 – 10.78.9.3010.78.9.31
14710.78.9.32/2810.78.9.33 – 10.78.9.4610.78.9.47
14810.78.9.48/2810.78.9.49 – 10.78.9.6210.78.9.63
14910.78.9.64/2810.78.9.65 – 10.78.9.7810.78.9.79
15010.78.9.80/2810.78.9.81 – 10.78.9.9410.78.9.95
15110.78.9.96/2810.78.9.97 – 10.78.9.11010.78.9.111
15210.78.9.112/2810.78.9.113 – 10.78.9.12610.78.9.127
15310.78.9.128/2810.78.9.129 – 10.78.9.14210.78.9.143
15410.78.9.144/2810.78.9.145 – 10.78.9.15810.78.9.159
15510.78.9.160/2810.78.9.161 – 10.78.9.17410.78.9.175
15610.78.9.176/2810.78.9.177 – 10.78.9.19010.78.9.191
15710.78.9.192/2810.78.9.193 – 10.78.9.20610.78.9.207
15810.78.9.208/2810.78.9.209 – 10.78.9.22210.78.9.223
15910.78.9.224/2810.78.9.225 – 10.78.9.23810.78.9.239
16010.78.9.240/2810.78.9.241 – 10.78.9.25410.78.9.255
16110.78.10.0/2810.78.10.1 – 10.78.10.1410.78.10.15
16210.78.10.16/2810.78.10.17 – 10.78.10.3010.78.10.31
16310.78.10.32/2810.78.10.33 – 10.78.10.4610.78.10.47
16410.78.10.48/2810.78.10.49 – 10.78.10.6210.78.10.63
16510.78.10.64/2810.78.10.65 – 10.78.10.7810.78.10.79
16610.78.10.80/2810.78.10.81 – 10.78.10.9410.78.10.95
16710.78.10.96/2810.78.10.97 – 10.78.10.11010.78.10.111
16810.78.10.112/2810.78.10.113 – 10.78.10.12610.78.10.127
16910.78.10.128/2810.78.10.129 – 10.78.10.14210.78.10.143
17010.78.10.144/2810.78.10.145 – 10.78.10.15810.78.10.159
17110.78.10.160/2810.78.10.161 – 10.78.10.17410.78.10.175
17210.78.10.176/2810.78.10.177 – 10.78.10.19010.78.10.191
17310.78.10.192/2810.78.10.193 – 10.78.10.20610.78.10.207
17410.78.10.208/2810.78.10.209 – 10.78.10.22210.78.10.223
17510.78.10.224/2810.78.10.225 – 10.78.10.23810.78.10.239
17610.78.10.240/2810.78.10.241 – 10.78.10.25410.78.10.255
17710.78.11.0/2810.78.11.1 – 10.78.11.1410.78.11.15
17810.78.11.16/2810.78.11.17 – 10.78.11.3010.78.11.31
17910.78.11.32/2810.78.11.33 – 10.78.11.4610.78.11.47
18010.78.11.48/2810.78.11.49 – 10.78.11.6210.78.11.63
18110.78.11.64/2810.78.11.65 – 10.78.11.7810.78.11.79
18210.78.11.80/2810.78.11.81 – 10.78.11.9410.78.11.95
18310.78.11.96/2810.78.11.97 – 10.78.11.11010.78.11.111
18410.78.11.112/2810.78.11.113 – 10.78.11.12610.78.11.127
18510.78.11.128/2810.78.11.129 – 10.78.11.14210.78.11.143
18610.78.11.144/2810.78.11.145 – 10.78.11.15810.78.11.159
18710.78.11.160/2810.78.11.161 – 10.78.11.17410.78.11.175
18810.78.11.176/2810.78.11.177 – 10.78.11.19010.78.11.191
18910.78.11.192/2810.78.11.193 – 10.78.11.20610.78.11.207
19010.78.11.208/2810.78.11.209 – 10.78.11.22210.78.11.223
19110.78.11.224/2810.78.11.225 – 10.78.11.23810.78.11.239
19210.78.11.240/2810.78.11.241 – 10.78.11.25410.78.11.255
19310.78.12.0/2810.78.12.1 – 10.78.12.1410.78.12.15
19410.78.12.16/2810.78.12.17 – 10.78.12.3010.78.12.31
19510.78.12.32/2810.78.12.33 – 10.78.12.4610.78.12.47
19610.78.12.48/2810.78.12.49 – 10.78.12.6210.78.12.63
19710.78.12.64/2810.78.12.65 – 10.78.12.7810.78.12.79
19810.78.12.80/2810.78.12.81 – 10.78.12.9410.78.12.95
19910.78.12.96/2810.78.12.97 – 10.78.12.11010.78.12.111
20010.78.12.112/2810.78.12.113 – 10.78.12.12610.78.12.127
20110.78.12.128/2810.78.12.129 – 10.78.12.14210.78.12.143
20210.78.12.144/2810.78.12.145 – 10.78.12.15810.78.12.159
20310.78.12.160/2810.78.12.161 – 10.78.12.17410.78.12.175
20410.78.12.176/2810.78.12.177 – 10.78.12.19010.78.12.191
20510.78.12.192/2810.78.12.193 – 10.78.12.20610.78.12.207
20610.78.12.208/2810.78.12.209 – 10.78.12.22210.78.12.223
20710.78.12.224/2810.78.12.225 – 10.78.12.23810.78.12.239
20810.78.12.240/2810.78.12.241 – 10.78.12.25410.78.12.255
20910.78.13.0/2810.78.13.1 – 10.78.13.1410.78.13.15
21010.78.13.16/2810.78.13.17 – 10.78.13.3010.78.13.31
21110.78.13.32/2810.78.13.33 – 10.78.13.4610.78.13.47
21210.78.13.48/2810.78.13.49 – 10.78.13.6210.78.13.63
21310.78.13.64/2810.78.13.65 – 10.78.13.7810.78.13.79
21410.78.13.80/2810.78.13.81 – 10.78.13.9410.78.13.95
21510.78.13.96/2810.78.13.97 – 10.78.13.11010.78.13.111
21610.78.13.112/2810.78.13.113 – 10.78.13.12610.78.13.127
21710.78.13.128/2810.78.13.129 – 10.78.13.14210.78.13.143
21810.78.13.144/2810.78.13.145 – 10.78.13.15810.78.13.159
21910.78.13.160/2810.78.13.161 – 10.78.13.17410.78.13.175
22010.78.13.176/2810.78.13.177 – 10.78.13.19010.78.13.191
22110.78.13.192/2810.78.13.193 – 10.78.13.20610.78.13.207
22210.78.13.208/2810.78.13.209 – 10.78.13.22210.78.13.223
22310.78.13.224/2810.78.13.225 – 10.78.13.23810.78.13.239
22410.78.13.240/2810.78.13.241 – 10.78.13.25410.78.13.255
22510.78.14.0/2810.78.14.1 – 10.78.14.1410.78.14.15
22610.78.14.16/2810.78.14.17 – 10.78.14.3010.78.14.31
22710.78.14.32/2810.78.14.33 – 10.78.14.4610.78.14.47
22810.78.14.48/2810.78.14.49 – 10.78.14.6210.78.14.63
22910.78.14.64/2810.78.14.65 – 10.78.14.7810.78.14.79
23010.78.14.80/2810.78.14.81 – 10.78.14.9410.78.14.95
23110.78.14.96/2810.78.14.97 – 10.78.14.11010.78.14.111
23210.78.14.112/2810.78.14.113 – 10.78.14.12610.78.14.127
23310.78.14.128/2810.78.14.129 – 10.78.14.14210.78.14.143
23410.78.14.144/2810.78.14.145 – 10.78.14.15810.78.14.159
23510.78.14.160/2810.78.14.161 – 10.78.14.17410.78.14.175
23610.78.14.176/2810.78.14.177 – 10.78.14.19010.78.14.191
23710.78.14.192/2810.78.14.193 – 10.78.14.20610.78.14.207
23810.78.14.208/2810.78.14.209 – 10.78.14.22210.78.14.223
23910.78.14.224/2810.78.14.225 – 10.78.14.23810.78.14.239
24010.78.14.240/2810.78.14.241 – 10.78.14.25410.78.14.255
24110.78.15.0/2810.78.15.1 – 10.78.15.1410.78.15.15
24210.78.15.16/2810.78.15.17 – 10.78.15.3010.78.15.31
24310.78.15.32/2810.78.15.33 – 10.78.15.4610.78.15.47
24410.78.15.48/2810.78.15.49 – 10.78.15.6210.78.15.63
24510.78.15.64/2810.78.15.65 – 10.78.15.7810.78.15.79
24610.78.15.80/2810.78.15.81 – 10.78.15.9410.78.15.95
24710.78.15.96/2810.78.15.97 – 10.78.15.11010.78.15.111
24810.78.15.112/2810.78.15.113 – 10.78.15.12610.78.15.127
24910.78.15.128/2810.78.15.129 – 10.78.15.14210.78.15.143
25010.78.15.144/2810.78.15.145 – 10.78.15.15810.78.15.159
25110.78.15.160/2810.78.15.161 – 10.78.15.17410.78.15.175
25210.78.15.176/2810.78.15.177 – 10.78.15.19010.78.15.191
25310.78.15.192/2810.78.15.193 – 10.78.15.20610.78.15.207
25410.78.15.208/2810.78.15.209 – 10.78.15.22210.78.15.223
25510.78.15.224/2810.78.15.225 – 10.78.15.23810.78.15.239
25610.78.15.240/2810.78.15.241 – 10.78.15.25410.78.15.255

showing 256 of 2,048

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 →