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)10.69.0.0/17
network10.69.0.0/17
broadcast10.69.127.255
first host10.69.0.1
last host10.69.127.254
subnet mask255.255.128.0
wildcard0.0.127.255
addresses32,768
usable hosts32,766
classA
ipcalc 10.69.0.0/17
address00001010.01000101.00000000.00000000
subnet mask11111111.11111111.10000000.00000000
network00001010.01000101.00000000.00000000
broadcast00001010.01000101.01111111.11111111
green = network part, grey = host part
hex0x0a450000
decimal172294144
reverse dns0.0.69.10.in-addr.arpa
ipv4-mapped::ffff:a45:0

/17 split into /28 · 2,048 subnets

close ×
#networkhost rangebroadcast
110.69.0.0/2810.69.0.1 – 10.69.0.1410.69.0.15
210.69.0.16/2810.69.0.17 – 10.69.0.3010.69.0.31
310.69.0.32/2810.69.0.33 – 10.69.0.4610.69.0.47
410.69.0.48/2810.69.0.49 – 10.69.0.6210.69.0.63
510.69.0.64/2810.69.0.65 – 10.69.0.7810.69.0.79
610.69.0.80/2810.69.0.81 – 10.69.0.9410.69.0.95
710.69.0.96/2810.69.0.97 – 10.69.0.11010.69.0.111
810.69.0.112/2810.69.0.113 – 10.69.0.12610.69.0.127
910.69.0.128/2810.69.0.129 – 10.69.0.14210.69.0.143
1010.69.0.144/2810.69.0.145 – 10.69.0.15810.69.0.159
1110.69.0.160/2810.69.0.161 – 10.69.0.17410.69.0.175
1210.69.0.176/2810.69.0.177 – 10.69.0.19010.69.0.191
1310.69.0.192/2810.69.0.193 – 10.69.0.20610.69.0.207
1410.69.0.208/2810.69.0.209 – 10.69.0.22210.69.0.223
1510.69.0.224/2810.69.0.225 – 10.69.0.23810.69.0.239
1610.69.0.240/2810.69.0.241 – 10.69.0.25410.69.0.255
1710.69.1.0/2810.69.1.1 – 10.69.1.1410.69.1.15
1810.69.1.16/2810.69.1.17 – 10.69.1.3010.69.1.31
1910.69.1.32/2810.69.1.33 – 10.69.1.4610.69.1.47
2010.69.1.48/2810.69.1.49 – 10.69.1.6210.69.1.63
2110.69.1.64/2810.69.1.65 – 10.69.1.7810.69.1.79
2210.69.1.80/2810.69.1.81 – 10.69.1.9410.69.1.95
2310.69.1.96/2810.69.1.97 – 10.69.1.11010.69.1.111
2410.69.1.112/2810.69.1.113 – 10.69.1.12610.69.1.127
2510.69.1.128/2810.69.1.129 – 10.69.1.14210.69.1.143
2610.69.1.144/2810.69.1.145 – 10.69.1.15810.69.1.159
2710.69.1.160/2810.69.1.161 – 10.69.1.17410.69.1.175
2810.69.1.176/2810.69.1.177 – 10.69.1.19010.69.1.191
2910.69.1.192/2810.69.1.193 – 10.69.1.20610.69.1.207
3010.69.1.208/2810.69.1.209 – 10.69.1.22210.69.1.223
3110.69.1.224/2810.69.1.225 – 10.69.1.23810.69.1.239
3210.69.1.240/2810.69.1.241 – 10.69.1.25410.69.1.255
3310.69.2.0/2810.69.2.1 – 10.69.2.1410.69.2.15
3410.69.2.16/2810.69.2.17 – 10.69.2.3010.69.2.31
3510.69.2.32/2810.69.2.33 – 10.69.2.4610.69.2.47
3610.69.2.48/2810.69.2.49 – 10.69.2.6210.69.2.63
3710.69.2.64/2810.69.2.65 – 10.69.2.7810.69.2.79
3810.69.2.80/2810.69.2.81 – 10.69.2.9410.69.2.95
3910.69.2.96/2810.69.2.97 – 10.69.2.11010.69.2.111
4010.69.2.112/2810.69.2.113 – 10.69.2.12610.69.2.127
4110.69.2.128/2810.69.2.129 – 10.69.2.14210.69.2.143
4210.69.2.144/2810.69.2.145 – 10.69.2.15810.69.2.159
4310.69.2.160/2810.69.2.161 – 10.69.2.17410.69.2.175
4410.69.2.176/2810.69.2.177 – 10.69.2.19010.69.2.191
4510.69.2.192/2810.69.2.193 – 10.69.2.20610.69.2.207
4610.69.2.208/2810.69.2.209 – 10.69.2.22210.69.2.223
4710.69.2.224/2810.69.2.225 – 10.69.2.23810.69.2.239
4810.69.2.240/2810.69.2.241 – 10.69.2.25410.69.2.255
4910.69.3.0/2810.69.3.1 – 10.69.3.1410.69.3.15
5010.69.3.16/2810.69.3.17 – 10.69.3.3010.69.3.31
5110.69.3.32/2810.69.3.33 – 10.69.3.4610.69.3.47
5210.69.3.48/2810.69.3.49 – 10.69.3.6210.69.3.63
5310.69.3.64/2810.69.3.65 – 10.69.3.7810.69.3.79
5410.69.3.80/2810.69.3.81 – 10.69.3.9410.69.3.95
5510.69.3.96/2810.69.3.97 – 10.69.3.11010.69.3.111
5610.69.3.112/2810.69.3.113 – 10.69.3.12610.69.3.127
5710.69.3.128/2810.69.3.129 – 10.69.3.14210.69.3.143
5810.69.3.144/2810.69.3.145 – 10.69.3.15810.69.3.159
5910.69.3.160/2810.69.3.161 – 10.69.3.17410.69.3.175
6010.69.3.176/2810.69.3.177 – 10.69.3.19010.69.3.191
6110.69.3.192/2810.69.3.193 – 10.69.3.20610.69.3.207
6210.69.3.208/2810.69.3.209 – 10.69.3.22210.69.3.223
6310.69.3.224/2810.69.3.225 – 10.69.3.23810.69.3.239
6410.69.3.240/2810.69.3.241 – 10.69.3.25410.69.3.255
6510.69.4.0/2810.69.4.1 – 10.69.4.1410.69.4.15
6610.69.4.16/2810.69.4.17 – 10.69.4.3010.69.4.31
6710.69.4.32/2810.69.4.33 – 10.69.4.4610.69.4.47
6810.69.4.48/2810.69.4.49 – 10.69.4.6210.69.4.63
6910.69.4.64/2810.69.4.65 – 10.69.4.7810.69.4.79
7010.69.4.80/2810.69.4.81 – 10.69.4.9410.69.4.95
7110.69.4.96/2810.69.4.97 – 10.69.4.11010.69.4.111
7210.69.4.112/2810.69.4.113 – 10.69.4.12610.69.4.127
7310.69.4.128/2810.69.4.129 – 10.69.4.14210.69.4.143
7410.69.4.144/2810.69.4.145 – 10.69.4.15810.69.4.159
7510.69.4.160/2810.69.4.161 – 10.69.4.17410.69.4.175
7610.69.4.176/2810.69.4.177 – 10.69.4.19010.69.4.191
7710.69.4.192/2810.69.4.193 – 10.69.4.20610.69.4.207
7810.69.4.208/2810.69.4.209 – 10.69.4.22210.69.4.223
7910.69.4.224/2810.69.4.225 – 10.69.4.23810.69.4.239
8010.69.4.240/2810.69.4.241 – 10.69.4.25410.69.4.255
8110.69.5.0/2810.69.5.1 – 10.69.5.1410.69.5.15
8210.69.5.16/2810.69.5.17 – 10.69.5.3010.69.5.31
8310.69.5.32/2810.69.5.33 – 10.69.5.4610.69.5.47
8410.69.5.48/2810.69.5.49 – 10.69.5.6210.69.5.63
8510.69.5.64/2810.69.5.65 – 10.69.5.7810.69.5.79
8610.69.5.80/2810.69.5.81 – 10.69.5.9410.69.5.95
8710.69.5.96/2810.69.5.97 – 10.69.5.11010.69.5.111
8810.69.5.112/2810.69.5.113 – 10.69.5.12610.69.5.127
8910.69.5.128/2810.69.5.129 – 10.69.5.14210.69.5.143
9010.69.5.144/2810.69.5.145 – 10.69.5.15810.69.5.159
9110.69.5.160/2810.69.5.161 – 10.69.5.17410.69.5.175
9210.69.5.176/2810.69.5.177 – 10.69.5.19010.69.5.191
9310.69.5.192/2810.69.5.193 – 10.69.5.20610.69.5.207
9410.69.5.208/2810.69.5.209 – 10.69.5.22210.69.5.223
9510.69.5.224/2810.69.5.225 – 10.69.5.23810.69.5.239
9610.69.5.240/2810.69.5.241 – 10.69.5.25410.69.5.255
9710.69.6.0/2810.69.6.1 – 10.69.6.1410.69.6.15
9810.69.6.16/2810.69.6.17 – 10.69.6.3010.69.6.31
9910.69.6.32/2810.69.6.33 – 10.69.6.4610.69.6.47
10010.69.6.48/2810.69.6.49 – 10.69.6.6210.69.6.63
10110.69.6.64/2810.69.6.65 – 10.69.6.7810.69.6.79
10210.69.6.80/2810.69.6.81 – 10.69.6.9410.69.6.95
10310.69.6.96/2810.69.6.97 – 10.69.6.11010.69.6.111
10410.69.6.112/2810.69.6.113 – 10.69.6.12610.69.6.127
10510.69.6.128/2810.69.6.129 – 10.69.6.14210.69.6.143
10610.69.6.144/2810.69.6.145 – 10.69.6.15810.69.6.159
10710.69.6.160/2810.69.6.161 – 10.69.6.17410.69.6.175
10810.69.6.176/2810.69.6.177 – 10.69.6.19010.69.6.191
10910.69.6.192/2810.69.6.193 – 10.69.6.20610.69.6.207
11010.69.6.208/2810.69.6.209 – 10.69.6.22210.69.6.223
11110.69.6.224/2810.69.6.225 – 10.69.6.23810.69.6.239
11210.69.6.240/2810.69.6.241 – 10.69.6.25410.69.6.255
11310.69.7.0/2810.69.7.1 – 10.69.7.1410.69.7.15
11410.69.7.16/2810.69.7.17 – 10.69.7.3010.69.7.31
11510.69.7.32/2810.69.7.33 – 10.69.7.4610.69.7.47
11610.69.7.48/2810.69.7.49 – 10.69.7.6210.69.7.63
11710.69.7.64/2810.69.7.65 – 10.69.7.7810.69.7.79
11810.69.7.80/2810.69.7.81 – 10.69.7.9410.69.7.95
11910.69.7.96/2810.69.7.97 – 10.69.7.11010.69.7.111
12010.69.7.112/2810.69.7.113 – 10.69.7.12610.69.7.127
12110.69.7.128/2810.69.7.129 – 10.69.7.14210.69.7.143
12210.69.7.144/2810.69.7.145 – 10.69.7.15810.69.7.159
12310.69.7.160/2810.69.7.161 – 10.69.7.17410.69.7.175
12410.69.7.176/2810.69.7.177 – 10.69.7.19010.69.7.191
12510.69.7.192/2810.69.7.193 – 10.69.7.20610.69.7.207
12610.69.7.208/2810.69.7.209 – 10.69.7.22210.69.7.223
12710.69.7.224/2810.69.7.225 – 10.69.7.23810.69.7.239
12810.69.7.240/2810.69.7.241 – 10.69.7.25410.69.7.255
12910.69.8.0/2810.69.8.1 – 10.69.8.1410.69.8.15
13010.69.8.16/2810.69.8.17 – 10.69.8.3010.69.8.31
13110.69.8.32/2810.69.8.33 – 10.69.8.4610.69.8.47
13210.69.8.48/2810.69.8.49 – 10.69.8.6210.69.8.63
13310.69.8.64/2810.69.8.65 – 10.69.8.7810.69.8.79
13410.69.8.80/2810.69.8.81 – 10.69.8.9410.69.8.95
13510.69.8.96/2810.69.8.97 – 10.69.8.11010.69.8.111
13610.69.8.112/2810.69.8.113 – 10.69.8.12610.69.8.127
13710.69.8.128/2810.69.8.129 – 10.69.8.14210.69.8.143
13810.69.8.144/2810.69.8.145 – 10.69.8.15810.69.8.159
13910.69.8.160/2810.69.8.161 – 10.69.8.17410.69.8.175
14010.69.8.176/2810.69.8.177 – 10.69.8.19010.69.8.191
14110.69.8.192/2810.69.8.193 – 10.69.8.20610.69.8.207
14210.69.8.208/2810.69.8.209 – 10.69.8.22210.69.8.223
14310.69.8.224/2810.69.8.225 – 10.69.8.23810.69.8.239
14410.69.8.240/2810.69.8.241 – 10.69.8.25410.69.8.255
14510.69.9.0/2810.69.9.1 – 10.69.9.1410.69.9.15
14610.69.9.16/2810.69.9.17 – 10.69.9.3010.69.9.31
14710.69.9.32/2810.69.9.33 – 10.69.9.4610.69.9.47
14810.69.9.48/2810.69.9.49 – 10.69.9.6210.69.9.63
14910.69.9.64/2810.69.9.65 – 10.69.9.7810.69.9.79
15010.69.9.80/2810.69.9.81 – 10.69.9.9410.69.9.95
15110.69.9.96/2810.69.9.97 – 10.69.9.11010.69.9.111
15210.69.9.112/2810.69.9.113 – 10.69.9.12610.69.9.127
15310.69.9.128/2810.69.9.129 – 10.69.9.14210.69.9.143
15410.69.9.144/2810.69.9.145 – 10.69.9.15810.69.9.159
15510.69.9.160/2810.69.9.161 – 10.69.9.17410.69.9.175
15610.69.9.176/2810.69.9.177 – 10.69.9.19010.69.9.191
15710.69.9.192/2810.69.9.193 – 10.69.9.20610.69.9.207
15810.69.9.208/2810.69.9.209 – 10.69.9.22210.69.9.223
15910.69.9.224/2810.69.9.225 – 10.69.9.23810.69.9.239
16010.69.9.240/2810.69.9.241 – 10.69.9.25410.69.9.255
16110.69.10.0/2810.69.10.1 – 10.69.10.1410.69.10.15
16210.69.10.16/2810.69.10.17 – 10.69.10.3010.69.10.31
16310.69.10.32/2810.69.10.33 – 10.69.10.4610.69.10.47
16410.69.10.48/2810.69.10.49 – 10.69.10.6210.69.10.63
16510.69.10.64/2810.69.10.65 – 10.69.10.7810.69.10.79
16610.69.10.80/2810.69.10.81 – 10.69.10.9410.69.10.95
16710.69.10.96/2810.69.10.97 – 10.69.10.11010.69.10.111
16810.69.10.112/2810.69.10.113 – 10.69.10.12610.69.10.127
16910.69.10.128/2810.69.10.129 – 10.69.10.14210.69.10.143
17010.69.10.144/2810.69.10.145 – 10.69.10.15810.69.10.159
17110.69.10.160/2810.69.10.161 – 10.69.10.17410.69.10.175
17210.69.10.176/2810.69.10.177 – 10.69.10.19010.69.10.191
17310.69.10.192/2810.69.10.193 – 10.69.10.20610.69.10.207
17410.69.10.208/2810.69.10.209 – 10.69.10.22210.69.10.223
17510.69.10.224/2810.69.10.225 – 10.69.10.23810.69.10.239
17610.69.10.240/2810.69.10.241 – 10.69.10.25410.69.10.255
17710.69.11.0/2810.69.11.1 – 10.69.11.1410.69.11.15
17810.69.11.16/2810.69.11.17 – 10.69.11.3010.69.11.31
17910.69.11.32/2810.69.11.33 – 10.69.11.4610.69.11.47
18010.69.11.48/2810.69.11.49 – 10.69.11.6210.69.11.63
18110.69.11.64/2810.69.11.65 – 10.69.11.7810.69.11.79
18210.69.11.80/2810.69.11.81 – 10.69.11.9410.69.11.95
18310.69.11.96/2810.69.11.97 – 10.69.11.11010.69.11.111
18410.69.11.112/2810.69.11.113 – 10.69.11.12610.69.11.127
18510.69.11.128/2810.69.11.129 – 10.69.11.14210.69.11.143
18610.69.11.144/2810.69.11.145 – 10.69.11.15810.69.11.159
18710.69.11.160/2810.69.11.161 – 10.69.11.17410.69.11.175
18810.69.11.176/2810.69.11.177 – 10.69.11.19010.69.11.191
18910.69.11.192/2810.69.11.193 – 10.69.11.20610.69.11.207
19010.69.11.208/2810.69.11.209 – 10.69.11.22210.69.11.223
19110.69.11.224/2810.69.11.225 – 10.69.11.23810.69.11.239
19210.69.11.240/2810.69.11.241 – 10.69.11.25410.69.11.255
19310.69.12.0/2810.69.12.1 – 10.69.12.1410.69.12.15
19410.69.12.16/2810.69.12.17 – 10.69.12.3010.69.12.31
19510.69.12.32/2810.69.12.33 – 10.69.12.4610.69.12.47
19610.69.12.48/2810.69.12.49 – 10.69.12.6210.69.12.63
19710.69.12.64/2810.69.12.65 – 10.69.12.7810.69.12.79
19810.69.12.80/2810.69.12.81 – 10.69.12.9410.69.12.95
19910.69.12.96/2810.69.12.97 – 10.69.12.11010.69.12.111
20010.69.12.112/2810.69.12.113 – 10.69.12.12610.69.12.127
20110.69.12.128/2810.69.12.129 – 10.69.12.14210.69.12.143
20210.69.12.144/2810.69.12.145 – 10.69.12.15810.69.12.159
20310.69.12.160/2810.69.12.161 – 10.69.12.17410.69.12.175
20410.69.12.176/2810.69.12.177 – 10.69.12.19010.69.12.191
20510.69.12.192/2810.69.12.193 – 10.69.12.20610.69.12.207
20610.69.12.208/2810.69.12.209 – 10.69.12.22210.69.12.223
20710.69.12.224/2810.69.12.225 – 10.69.12.23810.69.12.239
20810.69.12.240/2810.69.12.241 – 10.69.12.25410.69.12.255
20910.69.13.0/2810.69.13.1 – 10.69.13.1410.69.13.15
21010.69.13.16/2810.69.13.17 – 10.69.13.3010.69.13.31
21110.69.13.32/2810.69.13.33 – 10.69.13.4610.69.13.47
21210.69.13.48/2810.69.13.49 – 10.69.13.6210.69.13.63
21310.69.13.64/2810.69.13.65 – 10.69.13.7810.69.13.79
21410.69.13.80/2810.69.13.81 – 10.69.13.9410.69.13.95
21510.69.13.96/2810.69.13.97 – 10.69.13.11010.69.13.111
21610.69.13.112/2810.69.13.113 – 10.69.13.12610.69.13.127
21710.69.13.128/2810.69.13.129 – 10.69.13.14210.69.13.143
21810.69.13.144/2810.69.13.145 – 10.69.13.15810.69.13.159
21910.69.13.160/2810.69.13.161 – 10.69.13.17410.69.13.175
22010.69.13.176/2810.69.13.177 – 10.69.13.19010.69.13.191
22110.69.13.192/2810.69.13.193 – 10.69.13.20610.69.13.207
22210.69.13.208/2810.69.13.209 – 10.69.13.22210.69.13.223
22310.69.13.224/2810.69.13.225 – 10.69.13.23810.69.13.239
22410.69.13.240/2810.69.13.241 – 10.69.13.25410.69.13.255
22510.69.14.0/2810.69.14.1 – 10.69.14.1410.69.14.15
22610.69.14.16/2810.69.14.17 – 10.69.14.3010.69.14.31
22710.69.14.32/2810.69.14.33 – 10.69.14.4610.69.14.47
22810.69.14.48/2810.69.14.49 – 10.69.14.6210.69.14.63
22910.69.14.64/2810.69.14.65 – 10.69.14.7810.69.14.79
23010.69.14.80/2810.69.14.81 – 10.69.14.9410.69.14.95
23110.69.14.96/2810.69.14.97 – 10.69.14.11010.69.14.111
23210.69.14.112/2810.69.14.113 – 10.69.14.12610.69.14.127
23310.69.14.128/2810.69.14.129 – 10.69.14.14210.69.14.143
23410.69.14.144/2810.69.14.145 – 10.69.14.15810.69.14.159
23510.69.14.160/2810.69.14.161 – 10.69.14.17410.69.14.175
23610.69.14.176/2810.69.14.177 – 10.69.14.19010.69.14.191
23710.69.14.192/2810.69.14.193 – 10.69.14.20610.69.14.207
23810.69.14.208/2810.69.14.209 – 10.69.14.22210.69.14.223
23910.69.14.224/2810.69.14.225 – 10.69.14.23810.69.14.239
24010.69.14.240/2810.69.14.241 – 10.69.14.25410.69.14.255
24110.69.15.0/2810.69.15.1 – 10.69.15.1410.69.15.15
24210.69.15.16/2810.69.15.17 – 10.69.15.3010.69.15.31
24310.69.15.32/2810.69.15.33 – 10.69.15.4610.69.15.47
24410.69.15.48/2810.69.15.49 – 10.69.15.6210.69.15.63
24510.69.15.64/2810.69.15.65 – 10.69.15.7810.69.15.79
24610.69.15.80/2810.69.15.81 – 10.69.15.9410.69.15.95
24710.69.15.96/2810.69.15.97 – 10.69.15.11010.69.15.111
24810.69.15.112/2810.69.15.113 – 10.69.15.12610.69.15.127
24910.69.15.128/2810.69.15.129 – 10.69.15.14210.69.15.143
25010.69.15.144/2810.69.15.145 – 10.69.15.15810.69.15.159
25110.69.15.160/2810.69.15.161 – 10.69.15.17410.69.15.175
25210.69.15.176/2810.69.15.177 – 10.69.15.19010.69.15.191
25310.69.15.192/2810.69.15.193 – 10.69.15.20610.69.15.207
25410.69.15.208/2810.69.15.209 – 10.69.15.22210.69.15.223
25510.69.15.224/2810.69.15.225 – 10.69.15.23810.69.15.239
25610.69.15.240/2810.69.15.241 – 10.69.15.25410.69.15.255

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 →