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)10.82.0.0/17
network10.82.0.0/17
broadcast10.82.127.255
first host10.82.0.1
last host10.82.127.254
subnet mask255.255.128.0
wildcard0.0.127.255
addresses32,768
usable hosts32,766
classA
ipcalc 10.82.0.0/17
address00001010.01010010.00000000.00000000
subnet mask11111111.11111111.10000000.00000000
network00001010.01010010.00000000.00000000
broadcast00001010.01010010.01111111.11111111
green = network part, grey = host part
hex0x0a520000
decimal173146112
reverse dns0.0.82.10.in-addr.arpa
ipv4-mapped::ffff:a52:0

/17 split into /27 · 1,024 subnets

close ×
#networkhost rangebroadcast
110.82.0.0/2710.82.0.1 – 10.82.0.3010.82.0.31
210.82.0.32/2710.82.0.33 – 10.82.0.6210.82.0.63
310.82.0.64/2710.82.0.65 – 10.82.0.9410.82.0.95
410.82.0.96/2710.82.0.97 – 10.82.0.12610.82.0.127
510.82.0.128/2710.82.0.129 – 10.82.0.15810.82.0.159
610.82.0.160/2710.82.0.161 – 10.82.0.19010.82.0.191
710.82.0.192/2710.82.0.193 – 10.82.0.22210.82.0.223
810.82.0.224/2710.82.0.225 – 10.82.0.25410.82.0.255
910.82.1.0/2710.82.1.1 – 10.82.1.3010.82.1.31
1010.82.1.32/2710.82.1.33 – 10.82.1.6210.82.1.63
1110.82.1.64/2710.82.1.65 – 10.82.1.9410.82.1.95
1210.82.1.96/2710.82.1.97 – 10.82.1.12610.82.1.127
1310.82.1.128/2710.82.1.129 – 10.82.1.15810.82.1.159
1410.82.1.160/2710.82.1.161 – 10.82.1.19010.82.1.191
1510.82.1.192/2710.82.1.193 – 10.82.1.22210.82.1.223
1610.82.1.224/2710.82.1.225 – 10.82.1.25410.82.1.255
1710.82.2.0/2710.82.2.1 – 10.82.2.3010.82.2.31
1810.82.2.32/2710.82.2.33 – 10.82.2.6210.82.2.63
1910.82.2.64/2710.82.2.65 – 10.82.2.9410.82.2.95
2010.82.2.96/2710.82.2.97 – 10.82.2.12610.82.2.127
2110.82.2.128/2710.82.2.129 – 10.82.2.15810.82.2.159
2210.82.2.160/2710.82.2.161 – 10.82.2.19010.82.2.191
2310.82.2.192/2710.82.2.193 – 10.82.2.22210.82.2.223
2410.82.2.224/2710.82.2.225 – 10.82.2.25410.82.2.255
2510.82.3.0/2710.82.3.1 – 10.82.3.3010.82.3.31
2610.82.3.32/2710.82.3.33 – 10.82.3.6210.82.3.63
2710.82.3.64/2710.82.3.65 – 10.82.3.9410.82.3.95
2810.82.3.96/2710.82.3.97 – 10.82.3.12610.82.3.127
2910.82.3.128/2710.82.3.129 – 10.82.3.15810.82.3.159
3010.82.3.160/2710.82.3.161 – 10.82.3.19010.82.3.191
3110.82.3.192/2710.82.3.193 – 10.82.3.22210.82.3.223
3210.82.3.224/2710.82.3.225 – 10.82.3.25410.82.3.255
3310.82.4.0/2710.82.4.1 – 10.82.4.3010.82.4.31
3410.82.4.32/2710.82.4.33 – 10.82.4.6210.82.4.63
3510.82.4.64/2710.82.4.65 – 10.82.4.9410.82.4.95
3610.82.4.96/2710.82.4.97 – 10.82.4.12610.82.4.127
3710.82.4.128/2710.82.4.129 – 10.82.4.15810.82.4.159
3810.82.4.160/2710.82.4.161 – 10.82.4.19010.82.4.191
3910.82.4.192/2710.82.4.193 – 10.82.4.22210.82.4.223
4010.82.4.224/2710.82.4.225 – 10.82.4.25410.82.4.255
4110.82.5.0/2710.82.5.1 – 10.82.5.3010.82.5.31
4210.82.5.32/2710.82.5.33 – 10.82.5.6210.82.5.63
4310.82.5.64/2710.82.5.65 – 10.82.5.9410.82.5.95
4410.82.5.96/2710.82.5.97 – 10.82.5.12610.82.5.127
4510.82.5.128/2710.82.5.129 – 10.82.5.15810.82.5.159
4610.82.5.160/2710.82.5.161 – 10.82.5.19010.82.5.191
4710.82.5.192/2710.82.5.193 – 10.82.5.22210.82.5.223
4810.82.5.224/2710.82.5.225 – 10.82.5.25410.82.5.255
4910.82.6.0/2710.82.6.1 – 10.82.6.3010.82.6.31
5010.82.6.32/2710.82.6.33 – 10.82.6.6210.82.6.63
5110.82.6.64/2710.82.6.65 – 10.82.6.9410.82.6.95
5210.82.6.96/2710.82.6.97 – 10.82.6.12610.82.6.127
5310.82.6.128/2710.82.6.129 – 10.82.6.15810.82.6.159
5410.82.6.160/2710.82.6.161 – 10.82.6.19010.82.6.191
5510.82.6.192/2710.82.6.193 – 10.82.6.22210.82.6.223
5610.82.6.224/2710.82.6.225 – 10.82.6.25410.82.6.255
5710.82.7.0/2710.82.7.1 – 10.82.7.3010.82.7.31
5810.82.7.32/2710.82.7.33 – 10.82.7.6210.82.7.63
5910.82.7.64/2710.82.7.65 – 10.82.7.9410.82.7.95
6010.82.7.96/2710.82.7.97 – 10.82.7.12610.82.7.127
6110.82.7.128/2710.82.7.129 – 10.82.7.15810.82.7.159
6210.82.7.160/2710.82.7.161 – 10.82.7.19010.82.7.191
6310.82.7.192/2710.82.7.193 – 10.82.7.22210.82.7.223
6410.82.7.224/2710.82.7.225 – 10.82.7.25410.82.7.255
6510.82.8.0/2710.82.8.1 – 10.82.8.3010.82.8.31
6610.82.8.32/2710.82.8.33 – 10.82.8.6210.82.8.63
6710.82.8.64/2710.82.8.65 – 10.82.8.9410.82.8.95
6810.82.8.96/2710.82.8.97 – 10.82.8.12610.82.8.127
6910.82.8.128/2710.82.8.129 – 10.82.8.15810.82.8.159
7010.82.8.160/2710.82.8.161 – 10.82.8.19010.82.8.191
7110.82.8.192/2710.82.8.193 – 10.82.8.22210.82.8.223
7210.82.8.224/2710.82.8.225 – 10.82.8.25410.82.8.255
7310.82.9.0/2710.82.9.1 – 10.82.9.3010.82.9.31
7410.82.9.32/2710.82.9.33 – 10.82.9.6210.82.9.63
7510.82.9.64/2710.82.9.65 – 10.82.9.9410.82.9.95
7610.82.9.96/2710.82.9.97 – 10.82.9.12610.82.9.127
7710.82.9.128/2710.82.9.129 – 10.82.9.15810.82.9.159
7810.82.9.160/2710.82.9.161 – 10.82.9.19010.82.9.191
7910.82.9.192/2710.82.9.193 – 10.82.9.22210.82.9.223
8010.82.9.224/2710.82.9.225 – 10.82.9.25410.82.9.255
8110.82.10.0/2710.82.10.1 – 10.82.10.3010.82.10.31
8210.82.10.32/2710.82.10.33 – 10.82.10.6210.82.10.63
8310.82.10.64/2710.82.10.65 – 10.82.10.9410.82.10.95
8410.82.10.96/2710.82.10.97 – 10.82.10.12610.82.10.127
8510.82.10.128/2710.82.10.129 – 10.82.10.15810.82.10.159
8610.82.10.160/2710.82.10.161 – 10.82.10.19010.82.10.191
8710.82.10.192/2710.82.10.193 – 10.82.10.22210.82.10.223
8810.82.10.224/2710.82.10.225 – 10.82.10.25410.82.10.255
8910.82.11.0/2710.82.11.1 – 10.82.11.3010.82.11.31
9010.82.11.32/2710.82.11.33 – 10.82.11.6210.82.11.63
9110.82.11.64/2710.82.11.65 – 10.82.11.9410.82.11.95
9210.82.11.96/2710.82.11.97 – 10.82.11.12610.82.11.127
9310.82.11.128/2710.82.11.129 – 10.82.11.15810.82.11.159
9410.82.11.160/2710.82.11.161 – 10.82.11.19010.82.11.191
9510.82.11.192/2710.82.11.193 – 10.82.11.22210.82.11.223
9610.82.11.224/2710.82.11.225 – 10.82.11.25410.82.11.255
9710.82.12.0/2710.82.12.1 – 10.82.12.3010.82.12.31
9810.82.12.32/2710.82.12.33 – 10.82.12.6210.82.12.63
9910.82.12.64/2710.82.12.65 – 10.82.12.9410.82.12.95
10010.82.12.96/2710.82.12.97 – 10.82.12.12610.82.12.127
10110.82.12.128/2710.82.12.129 – 10.82.12.15810.82.12.159
10210.82.12.160/2710.82.12.161 – 10.82.12.19010.82.12.191
10310.82.12.192/2710.82.12.193 – 10.82.12.22210.82.12.223
10410.82.12.224/2710.82.12.225 – 10.82.12.25410.82.12.255
10510.82.13.0/2710.82.13.1 – 10.82.13.3010.82.13.31
10610.82.13.32/2710.82.13.33 – 10.82.13.6210.82.13.63
10710.82.13.64/2710.82.13.65 – 10.82.13.9410.82.13.95
10810.82.13.96/2710.82.13.97 – 10.82.13.12610.82.13.127
10910.82.13.128/2710.82.13.129 – 10.82.13.15810.82.13.159
11010.82.13.160/2710.82.13.161 – 10.82.13.19010.82.13.191
11110.82.13.192/2710.82.13.193 – 10.82.13.22210.82.13.223
11210.82.13.224/2710.82.13.225 – 10.82.13.25410.82.13.255
11310.82.14.0/2710.82.14.1 – 10.82.14.3010.82.14.31
11410.82.14.32/2710.82.14.33 – 10.82.14.6210.82.14.63
11510.82.14.64/2710.82.14.65 – 10.82.14.9410.82.14.95
11610.82.14.96/2710.82.14.97 – 10.82.14.12610.82.14.127
11710.82.14.128/2710.82.14.129 – 10.82.14.15810.82.14.159
11810.82.14.160/2710.82.14.161 – 10.82.14.19010.82.14.191
11910.82.14.192/2710.82.14.193 – 10.82.14.22210.82.14.223
12010.82.14.224/2710.82.14.225 – 10.82.14.25410.82.14.255
12110.82.15.0/2710.82.15.1 – 10.82.15.3010.82.15.31
12210.82.15.32/2710.82.15.33 – 10.82.15.6210.82.15.63
12310.82.15.64/2710.82.15.65 – 10.82.15.9410.82.15.95
12410.82.15.96/2710.82.15.97 – 10.82.15.12610.82.15.127
12510.82.15.128/2710.82.15.129 – 10.82.15.15810.82.15.159
12610.82.15.160/2710.82.15.161 – 10.82.15.19010.82.15.191
12710.82.15.192/2710.82.15.193 – 10.82.15.22210.82.15.223
12810.82.15.224/2710.82.15.225 – 10.82.15.25410.82.15.255
12910.82.16.0/2710.82.16.1 – 10.82.16.3010.82.16.31
13010.82.16.32/2710.82.16.33 – 10.82.16.6210.82.16.63
13110.82.16.64/2710.82.16.65 – 10.82.16.9410.82.16.95
13210.82.16.96/2710.82.16.97 – 10.82.16.12610.82.16.127
13310.82.16.128/2710.82.16.129 – 10.82.16.15810.82.16.159
13410.82.16.160/2710.82.16.161 – 10.82.16.19010.82.16.191
13510.82.16.192/2710.82.16.193 – 10.82.16.22210.82.16.223
13610.82.16.224/2710.82.16.225 – 10.82.16.25410.82.16.255
13710.82.17.0/2710.82.17.1 – 10.82.17.3010.82.17.31
13810.82.17.32/2710.82.17.33 – 10.82.17.6210.82.17.63
13910.82.17.64/2710.82.17.65 – 10.82.17.9410.82.17.95
14010.82.17.96/2710.82.17.97 – 10.82.17.12610.82.17.127
14110.82.17.128/2710.82.17.129 – 10.82.17.15810.82.17.159
14210.82.17.160/2710.82.17.161 – 10.82.17.19010.82.17.191
14310.82.17.192/2710.82.17.193 – 10.82.17.22210.82.17.223
14410.82.17.224/2710.82.17.225 – 10.82.17.25410.82.17.255
14510.82.18.0/2710.82.18.1 – 10.82.18.3010.82.18.31
14610.82.18.32/2710.82.18.33 – 10.82.18.6210.82.18.63
14710.82.18.64/2710.82.18.65 – 10.82.18.9410.82.18.95
14810.82.18.96/2710.82.18.97 – 10.82.18.12610.82.18.127
14910.82.18.128/2710.82.18.129 – 10.82.18.15810.82.18.159
15010.82.18.160/2710.82.18.161 – 10.82.18.19010.82.18.191
15110.82.18.192/2710.82.18.193 – 10.82.18.22210.82.18.223
15210.82.18.224/2710.82.18.225 – 10.82.18.25410.82.18.255
15310.82.19.0/2710.82.19.1 – 10.82.19.3010.82.19.31
15410.82.19.32/2710.82.19.33 – 10.82.19.6210.82.19.63
15510.82.19.64/2710.82.19.65 – 10.82.19.9410.82.19.95
15610.82.19.96/2710.82.19.97 – 10.82.19.12610.82.19.127
15710.82.19.128/2710.82.19.129 – 10.82.19.15810.82.19.159
15810.82.19.160/2710.82.19.161 – 10.82.19.19010.82.19.191
15910.82.19.192/2710.82.19.193 – 10.82.19.22210.82.19.223
16010.82.19.224/2710.82.19.225 – 10.82.19.25410.82.19.255
16110.82.20.0/2710.82.20.1 – 10.82.20.3010.82.20.31
16210.82.20.32/2710.82.20.33 – 10.82.20.6210.82.20.63
16310.82.20.64/2710.82.20.65 – 10.82.20.9410.82.20.95
16410.82.20.96/2710.82.20.97 – 10.82.20.12610.82.20.127
16510.82.20.128/2710.82.20.129 – 10.82.20.15810.82.20.159
16610.82.20.160/2710.82.20.161 – 10.82.20.19010.82.20.191
16710.82.20.192/2710.82.20.193 – 10.82.20.22210.82.20.223
16810.82.20.224/2710.82.20.225 – 10.82.20.25410.82.20.255
16910.82.21.0/2710.82.21.1 – 10.82.21.3010.82.21.31
17010.82.21.32/2710.82.21.33 – 10.82.21.6210.82.21.63
17110.82.21.64/2710.82.21.65 – 10.82.21.9410.82.21.95
17210.82.21.96/2710.82.21.97 – 10.82.21.12610.82.21.127
17310.82.21.128/2710.82.21.129 – 10.82.21.15810.82.21.159
17410.82.21.160/2710.82.21.161 – 10.82.21.19010.82.21.191
17510.82.21.192/2710.82.21.193 – 10.82.21.22210.82.21.223
17610.82.21.224/2710.82.21.225 – 10.82.21.25410.82.21.255
17710.82.22.0/2710.82.22.1 – 10.82.22.3010.82.22.31
17810.82.22.32/2710.82.22.33 – 10.82.22.6210.82.22.63
17910.82.22.64/2710.82.22.65 – 10.82.22.9410.82.22.95
18010.82.22.96/2710.82.22.97 – 10.82.22.12610.82.22.127
18110.82.22.128/2710.82.22.129 – 10.82.22.15810.82.22.159
18210.82.22.160/2710.82.22.161 – 10.82.22.19010.82.22.191
18310.82.22.192/2710.82.22.193 – 10.82.22.22210.82.22.223
18410.82.22.224/2710.82.22.225 – 10.82.22.25410.82.22.255
18510.82.23.0/2710.82.23.1 – 10.82.23.3010.82.23.31
18610.82.23.32/2710.82.23.33 – 10.82.23.6210.82.23.63
18710.82.23.64/2710.82.23.65 – 10.82.23.9410.82.23.95
18810.82.23.96/2710.82.23.97 – 10.82.23.12610.82.23.127
18910.82.23.128/2710.82.23.129 – 10.82.23.15810.82.23.159
19010.82.23.160/2710.82.23.161 – 10.82.23.19010.82.23.191
19110.82.23.192/2710.82.23.193 – 10.82.23.22210.82.23.223
19210.82.23.224/2710.82.23.225 – 10.82.23.25410.82.23.255
19310.82.24.0/2710.82.24.1 – 10.82.24.3010.82.24.31
19410.82.24.32/2710.82.24.33 – 10.82.24.6210.82.24.63
19510.82.24.64/2710.82.24.65 – 10.82.24.9410.82.24.95
19610.82.24.96/2710.82.24.97 – 10.82.24.12610.82.24.127
19710.82.24.128/2710.82.24.129 – 10.82.24.15810.82.24.159
19810.82.24.160/2710.82.24.161 – 10.82.24.19010.82.24.191
19910.82.24.192/2710.82.24.193 – 10.82.24.22210.82.24.223
20010.82.24.224/2710.82.24.225 – 10.82.24.25410.82.24.255
20110.82.25.0/2710.82.25.1 – 10.82.25.3010.82.25.31
20210.82.25.32/2710.82.25.33 – 10.82.25.6210.82.25.63
20310.82.25.64/2710.82.25.65 – 10.82.25.9410.82.25.95
20410.82.25.96/2710.82.25.97 – 10.82.25.12610.82.25.127
20510.82.25.128/2710.82.25.129 – 10.82.25.15810.82.25.159
20610.82.25.160/2710.82.25.161 – 10.82.25.19010.82.25.191
20710.82.25.192/2710.82.25.193 – 10.82.25.22210.82.25.223
20810.82.25.224/2710.82.25.225 – 10.82.25.25410.82.25.255
20910.82.26.0/2710.82.26.1 – 10.82.26.3010.82.26.31
21010.82.26.32/2710.82.26.33 – 10.82.26.6210.82.26.63
21110.82.26.64/2710.82.26.65 – 10.82.26.9410.82.26.95
21210.82.26.96/2710.82.26.97 – 10.82.26.12610.82.26.127
21310.82.26.128/2710.82.26.129 – 10.82.26.15810.82.26.159
21410.82.26.160/2710.82.26.161 – 10.82.26.19010.82.26.191
21510.82.26.192/2710.82.26.193 – 10.82.26.22210.82.26.223
21610.82.26.224/2710.82.26.225 – 10.82.26.25410.82.26.255
21710.82.27.0/2710.82.27.1 – 10.82.27.3010.82.27.31
21810.82.27.32/2710.82.27.33 – 10.82.27.6210.82.27.63
21910.82.27.64/2710.82.27.65 – 10.82.27.9410.82.27.95
22010.82.27.96/2710.82.27.97 – 10.82.27.12610.82.27.127
22110.82.27.128/2710.82.27.129 – 10.82.27.15810.82.27.159
22210.82.27.160/2710.82.27.161 – 10.82.27.19010.82.27.191
22310.82.27.192/2710.82.27.193 – 10.82.27.22210.82.27.223
22410.82.27.224/2710.82.27.225 – 10.82.27.25410.82.27.255
22510.82.28.0/2710.82.28.1 – 10.82.28.3010.82.28.31
22610.82.28.32/2710.82.28.33 – 10.82.28.6210.82.28.63
22710.82.28.64/2710.82.28.65 – 10.82.28.9410.82.28.95
22810.82.28.96/2710.82.28.97 – 10.82.28.12610.82.28.127
22910.82.28.128/2710.82.28.129 – 10.82.28.15810.82.28.159
23010.82.28.160/2710.82.28.161 – 10.82.28.19010.82.28.191
23110.82.28.192/2710.82.28.193 – 10.82.28.22210.82.28.223
23210.82.28.224/2710.82.28.225 – 10.82.28.25410.82.28.255
23310.82.29.0/2710.82.29.1 – 10.82.29.3010.82.29.31
23410.82.29.32/2710.82.29.33 – 10.82.29.6210.82.29.63
23510.82.29.64/2710.82.29.65 – 10.82.29.9410.82.29.95
23610.82.29.96/2710.82.29.97 – 10.82.29.12610.82.29.127
23710.82.29.128/2710.82.29.129 – 10.82.29.15810.82.29.159
23810.82.29.160/2710.82.29.161 – 10.82.29.19010.82.29.191
23910.82.29.192/2710.82.29.193 – 10.82.29.22210.82.29.223
24010.82.29.224/2710.82.29.225 – 10.82.29.25410.82.29.255
24110.82.30.0/2710.82.30.1 – 10.82.30.3010.82.30.31
24210.82.30.32/2710.82.30.33 – 10.82.30.6210.82.30.63
24310.82.30.64/2710.82.30.65 – 10.82.30.9410.82.30.95
24410.82.30.96/2710.82.30.97 – 10.82.30.12610.82.30.127
24510.82.30.128/2710.82.30.129 – 10.82.30.15810.82.30.159
24610.82.30.160/2710.82.30.161 – 10.82.30.19010.82.30.191
24710.82.30.192/2710.82.30.193 – 10.82.30.22210.82.30.223
24810.82.30.224/2710.82.30.225 – 10.82.30.25410.82.30.255
24910.82.31.0/2710.82.31.1 – 10.82.31.3010.82.31.31
25010.82.31.32/2710.82.31.33 – 10.82.31.6210.82.31.63
25110.82.31.64/2710.82.31.65 – 10.82.31.9410.82.31.95
25210.82.31.96/2710.82.31.97 – 10.82.31.12610.82.31.127
25310.82.31.128/2710.82.31.129 – 10.82.31.15810.82.31.159
25410.82.31.160/2710.82.31.161 – 10.82.31.19010.82.31.191
25510.82.31.192/2710.82.31.193 – 10.82.31.22210.82.31.223
25610.82.31.224/2710.82.31.225 – 10.82.31.25410.82.31.255

showing 256 of 1,024

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 →