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)10.59.0.0/18
network10.59.0.0/18
broadcast10.59.63.255
first host10.59.0.1
last host10.59.63.254
subnet mask255.255.192.0
wildcard0.0.63.255
addresses16,384
usable hosts16,382
classA
ipcalc 10.59.0.0/18
address00001010.00111011.00000000.00000000
subnet mask11111111.11111111.11000000.00000000
network00001010.00111011.00000000.00000000
broadcast00001010.00111011.00111111.11111111
green = network part, grey = host part
hex0x0a3b0000
decimal171638784
reverse dns0.0.59.10.in-addr.arpa
ipv4-mapped::ffff:a3b:0

/18 split into /27 · 512 subnets

close ×
#networkhost rangebroadcast
110.59.0.0/2710.59.0.1 – 10.59.0.3010.59.0.31
210.59.0.32/2710.59.0.33 – 10.59.0.6210.59.0.63
310.59.0.64/2710.59.0.65 – 10.59.0.9410.59.0.95
410.59.0.96/2710.59.0.97 – 10.59.0.12610.59.0.127
510.59.0.128/2710.59.0.129 – 10.59.0.15810.59.0.159
610.59.0.160/2710.59.0.161 – 10.59.0.19010.59.0.191
710.59.0.192/2710.59.0.193 – 10.59.0.22210.59.0.223
810.59.0.224/2710.59.0.225 – 10.59.0.25410.59.0.255
910.59.1.0/2710.59.1.1 – 10.59.1.3010.59.1.31
1010.59.1.32/2710.59.1.33 – 10.59.1.6210.59.1.63
1110.59.1.64/2710.59.1.65 – 10.59.1.9410.59.1.95
1210.59.1.96/2710.59.1.97 – 10.59.1.12610.59.1.127
1310.59.1.128/2710.59.1.129 – 10.59.1.15810.59.1.159
1410.59.1.160/2710.59.1.161 – 10.59.1.19010.59.1.191
1510.59.1.192/2710.59.1.193 – 10.59.1.22210.59.1.223
1610.59.1.224/2710.59.1.225 – 10.59.1.25410.59.1.255
1710.59.2.0/2710.59.2.1 – 10.59.2.3010.59.2.31
1810.59.2.32/2710.59.2.33 – 10.59.2.6210.59.2.63
1910.59.2.64/2710.59.2.65 – 10.59.2.9410.59.2.95
2010.59.2.96/2710.59.2.97 – 10.59.2.12610.59.2.127
2110.59.2.128/2710.59.2.129 – 10.59.2.15810.59.2.159
2210.59.2.160/2710.59.2.161 – 10.59.2.19010.59.2.191
2310.59.2.192/2710.59.2.193 – 10.59.2.22210.59.2.223
2410.59.2.224/2710.59.2.225 – 10.59.2.25410.59.2.255
2510.59.3.0/2710.59.3.1 – 10.59.3.3010.59.3.31
2610.59.3.32/2710.59.3.33 – 10.59.3.6210.59.3.63
2710.59.3.64/2710.59.3.65 – 10.59.3.9410.59.3.95
2810.59.3.96/2710.59.3.97 – 10.59.3.12610.59.3.127
2910.59.3.128/2710.59.3.129 – 10.59.3.15810.59.3.159
3010.59.3.160/2710.59.3.161 – 10.59.3.19010.59.3.191
3110.59.3.192/2710.59.3.193 – 10.59.3.22210.59.3.223
3210.59.3.224/2710.59.3.225 – 10.59.3.25410.59.3.255
3310.59.4.0/2710.59.4.1 – 10.59.4.3010.59.4.31
3410.59.4.32/2710.59.4.33 – 10.59.4.6210.59.4.63
3510.59.4.64/2710.59.4.65 – 10.59.4.9410.59.4.95
3610.59.4.96/2710.59.4.97 – 10.59.4.12610.59.4.127
3710.59.4.128/2710.59.4.129 – 10.59.4.15810.59.4.159
3810.59.4.160/2710.59.4.161 – 10.59.4.19010.59.4.191
3910.59.4.192/2710.59.4.193 – 10.59.4.22210.59.4.223
4010.59.4.224/2710.59.4.225 – 10.59.4.25410.59.4.255
4110.59.5.0/2710.59.5.1 – 10.59.5.3010.59.5.31
4210.59.5.32/2710.59.5.33 – 10.59.5.6210.59.5.63
4310.59.5.64/2710.59.5.65 – 10.59.5.9410.59.5.95
4410.59.5.96/2710.59.5.97 – 10.59.5.12610.59.5.127
4510.59.5.128/2710.59.5.129 – 10.59.5.15810.59.5.159
4610.59.5.160/2710.59.5.161 – 10.59.5.19010.59.5.191
4710.59.5.192/2710.59.5.193 – 10.59.5.22210.59.5.223
4810.59.5.224/2710.59.5.225 – 10.59.5.25410.59.5.255
4910.59.6.0/2710.59.6.1 – 10.59.6.3010.59.6.31
5010.59.6.32/2710.59.6.33 – 10.59.6.6210.59.6.63
5110.59.6.64/2710.59.6.65 – 10.59.6.9410.59.6.95
5210.59.6.96/2710.59.6.97 – 10.59.6.12610.59.6.127
5310.59.6.128/2710.59.6.129 – 10.59.6.15810.59.6.159
5410.59.6.160/2710.59.6.161 – 10.59.6.19010.59.6.191
5510.59.6.192/2710.59.6.193 – 10.59.6.22210.59.6.223
5610.59.6.224/2710.59.6.225 – 10.59.6.25410.59.6.255
5710.59.7.0/2710.59.7.1 – 10.59.7.3010.59.7.31
5810.59.7.32/2710.59.7.33 – 10.59.7.6210.59.7.63
5910.59.7.64/2710.59.7.65 – 10.59.7.9410.59.7.95
6010.59.7.96/2710.59.7.97 – 10.59.7.12610.59.7.127
6110.59.7.128/2710.59.7.129 – 10.59.7.15810.59.7.159
6210.59.7.160/2710.59.7.161 – 10.59.7.19010.59.7.191
6310.59.7.192/2710.59.7.193 – 10.59.7.22210.59.7.223
6410.59.7.224/2710.59.7.225 – 10.59.7.25410.59.7.255
6510.59.8.0/2710.59.8.1 – 10.59.8.3010.59.8.31
6610.59.8.32/2710.59.8.33 – 10.59.8.6210.59.8.63
6710.59.8.64/2710.59.8.65 – 10.59.8.9410.59.8.95
6810.59.8.96/2710.59.8.97 – 10.59.8.12610.59.8.127
6910.59.8.128/2710.59.8.129 – 10.59.8.15810.59.8.159
7010.59.8.160/2710.59.8.161 – 10.59.8.19010.59.8.191
7110.59.8.192/2710.59.8.193 – 10.59.8.22210.59.8.223
7210.59.8.224/2710.59.8.225 – 10.59.8.25410.59.8.255
7310.59.9.0/2710.59.9.1 – 10.59.9.3010.59.9.31
7410.59.9.32/2710.59.9.33 – 10.59.9.6210.59.9.63
7510.59.9.64/2710.59.9.65 – 10.59.9.9410.59.9.95
7610.59.9.96/2710.59.9.97 – 10.59.9.12610.59.9.127
7710.59.9.128/2710.59.9.129 – 10.59.9.15810.59.9.159
7810.59.9.160/2710.59.9.161 – 10.59.9.19010.59.9.191
7910.59.9.192/2710.59.9.193 – 10.59.9.22210.59.9.223
8010.59.9.224/2710.59.9.225 – 10.59.9.25410.59.9.255
8110.59.10.0/2710.59.10.1 – 10.59.10.3010.59.10.31
8210.59.10.32/2710.59.10.33 – 10.59.10.6210.59.10.63
8310.59.10.64/2710.59.10.65 – 10.59.10.9410.59.10.95
8410.59.10.96/2710.59.10.97 – 10.59.10.12610.59.10.127
8510.59.10.128/2710.59.10.129 – 10.59.10.15810.59.10.159
8610.59.10.160/2710.59.10.161 – 10.59.10.19010.59.10.191
8710.59.10.192/2710.59.10.193 – 10.59.10.22210.59.10.223
8810.59.10.224/2710.59.10.225 – 10.59.10.25410.59.10.255
8910.59.11.0/2710.59.11.1 – 10.59.11.3010.59.11.31
9010.59.11.32/2710.59.11.33 – 10.59.11.6210.59.11.63
9110.59.11.64/2710.59.11.65 – 10.59.11.9410.59.11.95
9210.59.11.96/2710.59.11.97 – 10.59.11.12610.59.11.127
9310.59.11.128/2710.59.11.129 – 10.59.11.15810.59.11.159
9410.59.11.160/2710.59.11.161 – 10.59.11.19010.59.11.191
9510.59.11.192/2710.59.11.193 – 10.59.11.22210.59.11.223
9610.59.11.224/2710.59.11.225 – 10.59.11.25410.59.11.255
9710.59.12.0/2710.59.12.1 – 10.59.12.3010.59.12.31
9810.59.12.32/2710.59.12.33 – 10.59.12.6210.59.12.63
9910.59.12.64/2710.59.12.65 – 10.59.12.9410.59.12.95
10010.59.12.96/2710.59.12.97 – 10.59.12.12610.59.12.127
10110.59.12.128/2710.59.12.129 – 10.59.12.15810.59.12.159
10210.59.12.160/2710.59.12.161 – 10.59.12.19010.59.12.191
10310.59.12.192/2710.59.12.193 – 10.59.12.22210.59.12.223
10410.59.12.224/2710.59.12.225 – 10.59.12.25410.59.12.255
10510.59.13.0/2710.59.13.1 – 10.59.13.3010.59.13.31
10610.59.13.32/2710.59.13.33 – 10.59.13.6210.59.13.63
10710.59.13.64/2710.59.13.65 – 10.59.13.9410.59.13.95
10810.59.13.96/2710.59.13.97 – 10.59.13.12610.59.13.127
10910.59.13.128/2710.59.13.129 – 10.59.13.15810.59.13.159
11010.59.13.160/2710.59.13.161 – 10.59.13.19010.59.13.191
11110.59.13.192/2710.59.13.193 – 10.59.13.22210.59.13.223
11210.59.13.224/2710.59.13.225 – 10.59.13.25410.59.13.255
11310.59.14.0/2710.59.14.1 – 10.59.14.3010.59.14.31
11410.59.14.32/2710.59.14.33 – 10.59.14.6210.59.14.63
11510.59.14.64/2710.59.14.65 – 10.59.14.9410.59.14.95
11610.59.14.96/2710.59.14.97 – 10.59.14.12610.59.14.127
11710.59.14.128/2710.59.14.129 – 10.59.14.15810.59.14.159
11810.59.14.160/2710.59.14.161 – 10.59.14.19010.59.14.191
11910.59.14.192/2710.59.14.193 – 10.59.14.22210.59.14.223
12010.59.14.224/2710.59.14.225 – 10.59.14.25410.59.14.255
12110.59.15.0/2710.59.15.1 – 10.59.15.3010.59.15.31
12210.59.15.32/2710.59.15.33 – 10.59.15.6210.59.15.63
12310.59.15.64/2710.59.15.65 – 10.59.15.9410.59.15.95
12410.59.15.96/2710.59.15.97 – 10.59.15.12610.59.15.127
12510.59.15.128/2710.59.15.129 – 10.59.15.15810.59.15.159
12610.59.15.160/2710.59.15.161 – 10.59.15.19010.59.15.191
12710.59.15.192/2710.59.15.193 – 10.59.15.22210.59.15.223
12810.59.15.224/2710.59.15.225 – 10.59.15.25410.59.15.255
12910.59.16.0/2710.59.16.1 – 10.59.16.3010.59.16.31
13010.59.16.32/2710.59.16.33 – 10.59.16.6210.59.16.63
13110.59.16.64/2710.59.16.65 – 10.59.16.9410.59.16.95
13210.59.16.96/2710.59.16.97 – 10.59.16.12610.59.16.127
13310.59.16.128/2710.59.16.129 – 10.59.16.15810.59.16.159
13410.59.16.160/2710.59.16.161 – 10.59.16.19010.59.16.191
13510.59.16.192/2710.59.16.193 – 10.59.16.22210.59.16.223
13610.59.16.224/2710.59.16.225 – 10.59.16.25410.59.16.255
13710.59.17.0/2710.59.17.1 – 10.59.17.3010.59.17.31
13810.59.17.32/2710.59.17.33 – 10.59.17.6210.59.17.63
13910.59.17.64/2710.59.17.65 – 10.59.17.9410.59.17.95
14010.59.17.96/2710.59.17.97 – 10.59.17.12610.59.17.127
14110.59.17.128/2710.59.17.129 – 10.59.17.15810.59.17.159
14210.59.17.160/2710.59.17.161 – 10.59.17.19010.59.17.191
14310.59.17.192/2710.59.17.193 – 10.59.17.22210.59.17.223
14410.59.17.224/2710.59.17.225 – 10.59.17.25410.59.17.255
14510.59.18.0/2710.59.18.1 – 10.59.18.3010.59.18.31
14610.59.18.32/2710.59.18.33 – 10.59.18.6210.59.18.63
14710.59.18.64/2710.59.18.65 – 10.59.18.9410.59.18.95
14810.59.18.96/2710.59.18.97 – 10.59.18.12610.59.18.127
14910.59.18.128/2710.59.18.129 – 10.59.18.15810.59.18.159
15010.59.18.160/2710.59.18.161 – 10.59.18.19010.59.18.191
15110.59.18.192/2710.59.18.193 – 10.59.18.22210.59.18.223
15210.59.18.224/2710.59.18.225 – 10.59.18.25410.59.18.255
15310.59.19.0/2710.59.19.1 – 10.59.19.3010.59.19.31
15410.59.19.32/2710.59.19.33 – 10.59.19.6210.59.19.63
15510.59.19.64/2710.59.19.65 – 10.59.19.9410.59.19.95
15610.59.19.96/2710.59.19.97 – 10.59.19.12610.59.19.127
15710.59.19.128/2710.59.19.129 – 10.59.19.15810.59.19.159
15810.59.19.160/2710.59.19.161 – 10.59.19.19010.59.19.191
15910.59.19.192/2710.59.19.193 – 10.59.19.22210.59.19.223
16010.59.19.224/2710.59.19.225 – 10.59.19.25410.59.19.255
16110.59.20.0/2710.59.20.1 – 10.59.20.3010.59.20.31
16210.59.20.32/2710.59.20.33 – 10.59.20.6210.59.20.63
16310.59.20.64/2710.59.20.65 – 10.59.20.9410.59.20.95
16410.59.20.96/2710.59.20.97 – 10.59.20.12610.59.20.127
16510.59.20.128/2710.59.20.129 – 10.59.20.15810.59.20.159
16610.59.20.160/2710.59.20.161 – 10.59.20.19010.59.20.191
16710.59.20.192/2710.59.20.193 – 10.59.20.22210.59.20.223
16810.59.20.224/2710.59.20.225 – 10.59.20.25410.59.20.255
16910.59.21.0/2710.59.21.1 – 10.59.21.3010.59.21.31
17010.59.21.32/2710.59.21.33 – 10.59.21.6210.59.21.63
17110.59.21.64/2710.59.21.65 – 10.59.21.9410.59.21.95
17210.59.21.96/2710.59.21.97 – 10.59.21.12610.59.21.127
17310.59.21.128/2710.59.21.129 – 10.59.21.15810.59.21.159
17410.59.21.160/2710.59.21.161 – 10.59.21.19010.59.21.191
17510.59.21.192/2710.59.21.193 – 10.59.21.22210.59.21.223
17610.59.21.224/2710.59.21.225 – 10.59.21.25410.59.21.255
17710.59.22.0/2710.59.22.1 – 10.59.22.3010.59.22.31
17810.59.22.32/2710.59.22.33 – 10.59.22.6210.59.22.63
17910.59.22.64/2710.59.22.65 – 10.59.22.9410.59.22.95
18010.59.22.96/2710.59.22.97 – 10.59.22.12610.59.22.127
18110.59.22.128/2710.59.22.129 – 10.59.22.15810.59.22.159
18210.59.22.160/2710.59.22.161 – 10.59.22.19010.59.22.191
18310.59.22.192/2710.59.22.193 – 10.59.22.22210.59.22.223
18410.59.22.224/2710.59.22.225 – 10.59.22.25410.59.22.255
18510.59.23.0/2710.59.23.1 – 10.59.23.3010.59.23.31
18610.59.23.32/2710.59.23.33 – 10.59.23.6210.59.23.63
18710.59.23.64/2710.59.23.65 – 10.59.23.9410.59.23.95
18810.59.23.96/2710.59.23.97 – 10.59.23.12610.59.23.127
18910.59.23.128/2710.59.23.129 – 10.59.23.15810.59.23.159
19010.59.23.160/2710.59.23.161 – 10.59.23.19010.59.23.191
19110.59.23.192/2710.59.23.193 – 10.59.23.22210.59.23.223
19210.59.23.224/2710.59.23.225 – 10.59.23.25410.59.23.255
19310.59.24.0/2710.59.24.1 – 10.59.24.3010.59.24.31
19410.59.24.32/2710.59.24.33 – 10.59.24.6210.59.24.63
19510.59.24.64/2710.59.24.65 – 10.59.24.9410.59.24.95
19610.59.24.96/2710.59.24.97 – 10.59.24.12610.59.24.127
19710.59.24.128/2710.59.24.129 – 10.59.24.15810.59.24.159
19810.59.24.160/2710.59.24.161 – 10.59.24.19010.59.24.191
19910.59.24.192/2710.59.24.193 – 10.59.24.22210.59.24.223
20010.59.24.224/2710.59.24.225 – 10.59.24.25410.59.24.255
20110.59.25.0/2710.59.25.1 – 10.59.25.3010.59.25.31
20210.59.25.32/2710.59.25.33 – 10.59.25.6210.59.25.63
20310.59.25.64/2710.59.25.65 – 10.59.25.9410.59.25.95
20410.59.25.96/2710.59.25.97 – 10.59.25.12610.59.25.127
20510.59.25.128/2710.59.25.129 – 10.59.25.15810.59.25.159
20610.59.25.160/2710.59.25.161 – 10.59.25.19010.59.25.191
20710.59.25.192/2710.59.25.193 – 10.59.25.22210.59.25.223
20810.59.25.224/2710.59.25.225 – 10.59.25.25410.59.25.255
20910.59.26.0/2710.59.26.1 – 10.59.26.3010.59.26.31
21010.59.26.32/2710.59.26.33 – 10.59.26.6210.59.26.63
21110.59.26.64/2710.59.26.65 – 10.59.26.9410.59.26.95
21210.59.26.96/2710.59.26.97 – 10.59.26.12610.59.26.127
21310.59.26.128/2710.59.26.129 – 10.59.26.15810.59.26.159
21410.59.26.160/2710.59.26.161 – 10.59.26.19010.59.26.191
21510.59.26.192/2710.59.26.193 – 10.59.26.22210.59.26.223
21610.59.26.224/2710.59.26.225 – 10.59.26.25410.59.26.255
21710.59.27.0/2710.59.27.1 – 10.59.27.3010.59.27.31
21810.59.27.32/2710.59.27.33 – 10.59.27.6210.59.27.63
21910.59.27.64/2710.59.27.65 – 10.59.27.9410.59.27.95
22010.59.27.96/2710.59.27.97 – 10.59.27.12610.59.27.127
22110.59.27.128/2710.59.27.129 – 10.59.27.15810.59.27.159
22210.59.27.160/2710.59.27.161 – 10.59.27.19010.59.27.191
22310.59.27.192/2710.59.27.193 – 10.59.27.22210.59.27.223
22410.59.27.224/2710.59.27.225 – 10.59.27.25410.59.27.255
22510.59.28.0/2710.59.28.1 – 10.59.28.3010.59.28.31
22610.59.28.32/2710.59.28.33 – 10.59.28.6210.59.28.63
22710.59.28.64/2710.59.28.65 – 10.59.28.9410.59.28.95
22810.59.28.96/2710.59.28.97 – 10.59.28.12610.59.28.127
22910.59.28.128/2710.59.28.129 – 10.59.28.15810.59.28.159
23010.59.28.160/2710.59.28.161 – 10.59.28.19010.59.28.191
23110.59.28.192/2710.59.28.193 – 10.59.28.22210.59.28.223
23210.59.28.224/2710.59.28.225 – 10.59.28.25410.59.28.255
23310.59.29.0/2710.59.29.1 – 10.59.29.3010.59.29.31
23410.59.29.32/2710.59.29.33 – 10.59.29.6210.59.29.63
23510.59.29.64/2710.59.29.65 – 10.59.29.9410.59.29.95
23610.59.29.96/2710.59.29.97 – 10.59.29.12610.59.29.127
23710.59.29.128/2710.59.29.129 – 10.59.29.15810.59.29.159
23810.59.29.160/2710.59.29.161 – 10.59.29.19010.59.29.191
23910.59.29.192/2710.59.29.193 – 10.59.29.22210.59.29.223
24010.59.29.224/2710.59.29.225 – 10.59.29.25410.59.29.255
24110.59.30.0/2710.59.30.1 – 10.59.30.3010.59.30.31
24210.59.30.32/2710.59.30.33 – 10.59.30.6210.59.30.63
24310.59.30.64/2710.59.30.65 – 10.59.30.9410.59.30.95
24410.59.30.96/2710.59.30.97 – 10.59.30.12610.59.30.127
24510.59.30.128/2710.59.30.129 – 10.59.30.15810.59.30.159
24610.59.30.160/2710.59.30.161 – 10.59.30.19010.59.30.191
24710.59.30.192/2710.59.30.193 – 10.59.30.22210.59.30.223
24810.59.30.224/2710.59.30.225 – 10.59.30.25410.59.30.255
24910.59.31.0/2710.59.31.1 – 10.59.31.3010.59.31.31
25010.59.31.32/2710.59.31.33 – 10.59.31.6210.59.31.63
25110.59.31.64/2710.59.31.65 – 10.59.31.9410.59.31.95
25210.59.31.96/2710.59.31.97 – 10.59.31.12610.59.31.127
25310.59.31.128/2710.59.31.129 – 10.59.31.15810.59.31.159
25410.59.31.160/2710.59.31.161 – 10.59.31.19010.59.31.191
25510.59.31.192/2710.59.31.193 – 10.59.31.22210.59.31.223
25610.59.31.224/2710.59.31.225 – 10.59.31.25410.59.31.255

showing 256 of 512

01 / table

IPv4 CIDR prefix table.

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

prefixsubnet maskaddresseshostsin your /18
/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-
/17255.255.128.032,76832,766-
/18255.255.192.016,38416,3821
/19255.255.224.08,1928,1902 split →
/20255.255.240.04,0964,0944 split →
/21255.255.248.02,0482,0468 split →
/22255.255.252.01,0241,02216 split →
/23255.255.254.051251032 split →
/24255.255.255.025625464 split →
/25255.255.255.128128126128 split →
/26255.255.255.1926462256 split →
/27255.255.255.2243230512 split →
/28255.255.255.24016141,024 split →
/29255.255.255.248862,048 split →
/30255.255.255.252424,096 split →
/31255.255.255.254228,192 split →
/32255.255.255.2551116,384 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 →