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)10.89.0.0/16
network10.89.0.0/16
broadcast10.89.255.255
first host10.89.0.1
last host10.89.255.254
subnet mask255.255.0.0
wildcard0.0.255.255
addresses65,536
usable hosts65,534
classA
ipcalc 10.89.0.0/16
address00001010.01011001.00000000.00000000
subnet mask11111111.11111111.00000000.00000000
network00001010.01011001.00000000.00000000
broadcast00001010.01011001.11111111.11111111
green = network part, grey = host part
hex0x0a590000
decimal173604864
reverse dns0.0.89.10.in-addr.arpa
ipv4-mapped::ffff:a59:0

/16 split into /27 · 2,048 subnets

close ×
#networkhost rangebroadcast
110.89.0.0/2710.89.0.1 – 10.89.0.3010.89.0.31
210.89.0.32/2710.89.0.33 – 10.89.0.6210.89.0.63
310.89.0.64/2710.89.0.65 – 10.89.0.9410.89.0.95
410.89.0.96/2710.89.0.97 – 10.89.0.12610.89.0.127
510.89.0.128/2710.89.0.129 – 10.89.0.15810.89.0.159
610.89.0.160/2710.89.0.161 – 10.89.0.19010.89.0.191
710.89.0.192/2710.89.0.193 – 10.89.0.22210.89.0.223
810.89.0.224/2710.89.0.225 – 10.89.0.25410.89.0.255
910.89.1.0/2710.89.1.1 – 10.89.1.3010.89.1.31
1010.89.1.32/2710.89.1.33 – 10.89.1.6210.89.1.63
1110.89.1.64/2710.89.1.65 – 10.89.1.9410.89.1.95
1210.89.1.96/2710.89.1.97 – 10.89.1.12610.89.1.127
1310.89.1.128/2710.89.1.129 – 10.89.1.15810.89.1.159
1410.89.1.160/2710.89.1.161 – 10.89.1.19010.89.1.191
1510.89.1.192/2710.89.1.193 – 10.89.1.22210.89.1.223
1610.89.1.224/2710.89.1.225 – 10.89.1.25410.89.1.255
1710.89.2.0/2710.89.2.1 – 10.89.2.3010.89.2.31
1810.89.2.32/2710.89.2.33 – 10.89.2.6210.89.2.63
1910.89.2.64/2710.89.2.65 – 10.89.2.9410.89.2.95
2010.89.2.96/2710.89.2.97 – 10.89.2.12610.89.2.127
2110.89.2.128/2710.89.2.129 – 10.89.2.15810.89.2.159
2210.89.2.160/2710.89.2.161 – 10.89.2.19010.89.2.191
2310.89.2.192/2710.89.2.193 – 10.89.2.22210.89.2.223
2410.89.2.224/2710.89.2.225 – 10.89.2.25410.89.2.255
2510.89.3.0/2710.89.3.1 – 10.89.3.3010.89.3.31
2610.89.3.32/2710.89.3.33 – 10.89.3.6210.89.3.63
2710.89.3.64/2710.89.3.65 – 10.89.3.9410.89.3.95
2810.89.3.96/2710.89.3.97 – 10.89.3.12610.89.3.127
2910.89.3.128/2710.89.3.129 – 10.89.3.15810.89.3.159
3010.89.3.160/2710.89.3.161 – 10.89.3.19010.89.3.191
3110.89.3.192/2710.89.3.193 – 10.89.3.22210.89.3.223
3210.89.3.224/2710.89.3.225 – 10.89.3.25410.89.3.255
3310.89.4.0/2710.89.4.1 – 10.89.4.3010.89.4.31
3410.89.4.32/2710.89.4.33 – 10.89.4.6210.89.4.63
3510.89.4.64/2710.89.4.65 – 10.89.4.9410.89.4.95
3610.89.4.96/2710.89.4.97 – 10.89.4.12610.89.4.127
3710.89.4.128/2710.89.4.129 – 10.89.4.15810.89.4.159
3810.89.4.160/2710.89.4.161 – 10.89.4.19010.89.4.191
3910.89.4.192/2710.89.4.193 – 10.89.4.22210.89.4.223
4010.89.4.224/2710.89.4.225 – 10.89.4.25410.89.4.255
4110.89.5.0/2710.89.5.1 – 10.89.5.3010.89.5.31
4210.89.5.32/2710.89.5.33 – 10.89.5.6210.89.5.63
4310.89.5.64/2710.89.5.65 – 10.89.5.9410.89.5.95
4410.89.5.96/2710.89.5.97 – 10.89.5.12610.89.5.127
4510.89.5.128/2710.89.5.129 – 10.89.5.15810.89.5.159
4610.89.5.160/2710.89.5.161 – 10.89.5.19010.89.5.191
4710.89.5.192/2710.89.5.193 – 10.89.5.22210.89.5.223
4810.89.5.224/2710.89.5.225 – 10.89.5.25410.89.5.255
4910.89.6.0/2710.89.6.1 – 10.89.6.3010.89.6.31
5010.89.6.32/2710.89.6.33 – 10.89.6.6210.89.6.63
5110.89.6.64/2710.89.6.65 – 10.89.6.9410.89.6.95
5210.89.6.96/2710.89.6.97 – 10.89.6.12610.89.6.127
5310.89.6.128/2710.89.6.129 – 10.89.6.15810.89.6.159
5410.89.6.160/2710.89.6.161 – 10.89.6.19010.89.6.191
5510.89.6.192/2710.89.6.193 – 10.89.6.22210.89.6.223
5610.89.6.224/2710.89.6.225 – 10.89.6.25410.89.6.255
5710.89.7.0/2710.89.7.1 – 10.89.7.3010.89.7.31
5810.89.7.32/2710.89.7.33 – 10.89.7.6210.89.7.63
5910.89.7.64/2710.89.7.65 – 10.89.7.9410.89.7.95
6010.89.7.96/2710.89.7.97 – 10.89.7.12610.89.7.127
6110.89.7.128/2710.89.7.129 – 10.89.7.15810.89.7.159
6210.89.7.160/2710.89.7.161 – 10.89.7.19010.89.7.191
6310.89.7.192/2710.89.7.193 – 10.89.7.22210.89.7.223
6410.89.7.224/2710.89.7.225 – 10.89.7.25410.89.7.255
6510.89.8.0/2710.89.8.1 – 10.89.8.3010.89.8.31
6610.89.8.32/2710.89.8.33 – 10.89.8.6210.89.8.63
6710.89.8.64/2710.89.8.65 – 10.89.8.9410.89.8.95
6810.89.8.96/2710.89.8.97 – 10.89.8.12610.89.8.127
6910.89.8.128/2710.89.8.129 – 10.89.8.15810.89.8.159
7010.89.8.160/2710.89.8.161 – 10.89.8.19010.89.8.191
7110.89.8.192/2710.89.8.193 – 10.89.8.22210.89.8.223
7210.89.8.224/2710.89.8.225 – 10.89.8.25410.89.8.255
7310.89.9.0/2710.89.9.1 – 10.89.9.3010.89.9.31
7410.89.9.32/2710.89.9.33 – 10.89.9.6210.89.9.63
7510.89.9.64/2710.89.9.65 – 10.89.9.9410.89.9.95
7610.89.9.96/2710.89.9.97 – 10.89.9.12610.89.9.127
7710.89.9.128/2710.89.9.129 – 10.89.9.15810.89.9.159
7810.89.9.160/2710.89.9.161 – 10.89.9.19010.89.9.191
7910.89.9.192/2710.89.9.193 – 10.89.9.22210.89.9.223
8010.89.9.224/2710.89.9.225 – 10.89.9.25410.89.9.255
8110.89.10.0/2710.89.10.1 – 10.89.10.3010.89.10.31
8210.89.10.32/2710.89.10.33 – 10.89.10.6210.89.10.63
8310.89.10.64/2710.89.10.65 – 10.89.10.9410.89.10.95
8410.89.10.96/2710.89.10.97 – 10.89.10.12610.89.10.127
8510.89.10.128/2710.89.10.129 – 10.89.10.15810.89.10.159
8610.89.10.160/2710.89.10.161 – 10.89.10.19010.89.10.191
8710.89.10.192/2710.89.10.193 – 10.89.10.22210.89.10.223
8810.89.10.224/2710.89.10.225 – 10.89.10.25410.89.10.255
8910.89.11.0/2710.89.11.1 – 10.89.11.3010.89.11.31
9010.89.11.32/2710.89.11.33 – 10.89.11.6210.89.11.63
9110.89.11.64/2710.89.11.65 – 10.89.11.9410.89.11.95
9210.89.11.96/2710.89.11.97 – 10.89.11.12610.89.11.127
9310.89.11.128/2710.89.11.129 – 10.89.11.15810.89.11.159
9410.89.11.160/2710.89.11.161 – 10.89.11.19010.89.11.191
9510.89.11.192/2710.89.11.193 – 10.89.11.22210.89.11.223
9610.89.11.224/2710.89.11.225 – 10.89.11.25410.89.11.255
9710.89.12.0/2710.89.12.1 – 10.89.12.3010.89.12.31
9810.89.12.32/2710.89.12.33 – 10.89.12.6210.89.12.63
9910.89.12.64/2710.89.12.65 – 10.89.12.9410.89.12.95
10010.89.12.96/2710.89.12.97 – 10.89.12.12610.89.12.127
10110.89.12.128/2710.89.12.129 – 10.89.12.15810.89.12.159
10210.89.12.160/2710.89.12.161 – 10.89.12.19010.89.12.191
10310.89.12.192/2710.89.12.193 – 10.89.12.22210.89.12.223
10410.89.12.224/2710.89.12.225 – 10.89.12.25410.89.12.255
10510.89.13.0/2710.89.13.1 – 10.89.13.3010.89.13.31
10610.89.13.32/2710.89.13.33 – 10.89.13.6210.89.13.63
10710.89.13.64/2710.89.13.65 – 10.89.13.9410.89.13.95
10810.89.13.96/2710.89.13.97 – 10.89.13.12610.89.13.127
10910.89.13.128/2710.89.13.129 – 10.89.13.15810.89.13.159
11010.89.13.160/2710.89.13.161 – 10.89.13.19010.89.13.191
11110.89.13.192/2710.89.13.193 – 10.89.13.22210.89.13.223
11210.89.13.224/2710.89.13.225 – 10.89.13.25410.89.13.255
11310.89.14.0/2710.89.14.1 – 10.89.14.3010.89.14.31
11410.89.14.32/2710.89.14.33 – 10.89.14.6210.89.14.63
11510.89.14.64/2710.89.14.65 – 10.89.14.9410.89.14.95
11610.89.14.96/2710.89.14.97 – 10.89.14.12610.89.14.127
11710.89.14.128/2710.89.14.129 – 10.89.14.15810.89.14.159
11810.89.14.160/2710.89.14.161 – 10.89.14.19010.89.14.191
11910.89.14.192/2710.89.14.193 – 10.89.14.22210.89.14.223
12010.89.14.224/2710.89.14.225 – 10.89.14.25410.89.14.255
12110.89.15.0/2710.89.15.1 – 10.89.15.3010.89.15.31
12210.89.15.32/2710.89.15.33 – 10.89.15.6210.89.15.63
12310.89.15.64/2710.89.15.65 – 10.89.15.9410.89.15.95
12410.89.15.96/2710.89.15.97 – 10.89.15.12610.89.15.127
12510.89.15.128/2710.89.15.129 – 10.89.15.15810.89.15.159
12610.89.15.160/2710.89.15.161 – 10.89.15.19010.89.15.191
12710.89.15.192/2710.89.15.193 – 10.89.15.22210.89.15.223
12810.89.15.224/2710.89.15.225 – 10.89.15.25410.89.15.255
12910.89.16.0/2710.89.16.1 – 10.89.16.3010.89.16.31
13010.89.16.32/2710.89.16.33 – 10.89.16.6210.89.16.63
13110.89.16.64/2710.89.16.65 – 10.89.16.9410.89.16.95
13210.89.16.96/2710.89.16.97 – 10.89.16.12610.89.16.127
13310.89.16.128/2710.89.16.129 – 10.89.16.15810.89.16.159
13410.89.16.160/2710.89.16.161 – 10.89.16.19010.89.16.191
13510.89.16.192/2710.89.16.193 – 10.89.16.22210.89.16.223
13610.89.16.224/2710.89.16.225 – 10.89.16.25410.89.16.255
13710.89.17.0/2710.89.17.1 – 10.89.17.3010.89.17.31
13810.89.17.32/2710.89.17.33 – 10.89.17.6210.89.17.63
13910.89.17.64/2710.89.17.65 – 10.89.17.9410.89.17.95
14010.89.17.96/2710.89.17.97 – 10.89.17.12610.89.17.127
14110.89.17.128/2710.89.17.129 – 10.89.17.15810.89.17.159
14210.89.17.160/2710.89.17.161 – 10.89.17.19010.89.17.191
14310.89.17.192/2710.89.17.193 – 10.89.17.22210.89.17.223
14410.89.17.224/2710.89.17.225 – 10.89.17.25410.89.17.255
14510.89.18.0/2710.89.18.1 – 10.89.18.3010.89.18.31
14610.89.18.32/2710.89.18.33 – 10.89.18.6210.89.18.63
14710.89.18.64/2710.89.18.65 – 10.89.18.9410.89.18.95
14810.89.18.96/2710.89.18.97 – 10.89.18.12610.89.18.127
14910.89.18.128/2710.89.18.129 – 10.89.18.15810.89.18.159
15010.89.18.160/2710.89.18.161 – 10.89.18.19010.89.18.191
15110.89.18.192/2710.89.18.193 – 10.89.18.22210.89.18.223
15210.89.18.224/2710.89.18.225 – 10.89.18.25410.89.18.255
15310.89.19.0/2710.89.19.1 – 10.89.19.3010.89.19.31
15410.89.19.32/2710.89.19.33 – 10.89.19.6210.89.19.63
15510.89.19.64/2710.89.19.65 – 10.89.19.9410.89.19.95
15610.89.19.96/2710.89.19.97 – 10.89.19.12610.89.19.127
15710.89.19.128/2710.89.19.129 – 10.89.19.15810.89.19.159
15810.89.19.160/2710.89.19.161 – 10.89.19.19010.89.19.191
15910.89.19.192/2710.89.19.193 – 10.89.19.22210.89.19.223
16010.89.19.224/2710.89.19.225 – 10.89.19.25410.89.19.255
16110.89.20.0/2710.89.20.1 – 10.89.20.3010.89.20.31
16210.89.20.32/2710.89.20.33 – 10.89.20.6210.89.20.63
16310.89.20.64/2710.89.20.65 – 10.89.20.9410.89.20.95
16410.89.20.96/2710.89.20.97 – 10.89.20.12610.89.20.127
16510.89.20.128/2710.89.20.129 – 10.89.20.15810.89.20.159
16610.89.20.160/2710.89.20.161 – 10.89.20.19010.89.20.191
16710.89.20.192/2710.89.20.193 – 10.89.20.22210.89.20.223
16810.89.20.224/2710.89.20.225 – 10.89.20.25410.89.20.255
16910.89.21.0/2710.89.21.1 – 10.89.21.3010.89.21.31
17010.89.21.32/2710.89.21.33 – 10.89.21.6210.89.21.63
17110.89.21.64/2710.89.21.65 – 10.89.21.9410.89.21.95
17210.89.21.96/2710.89.21.97 – 10.89.21.12610.89.21.127
17310.89.21.128/2710.89.21.129 – 10.89.21.15810.89.21.159
17410.89.21.160/2710.89.21.161 – 10.89.21.19010.89.21.191
17510.89.21.192/2710.89.21.193 – 10.89.21.22210.89.21.223
17610.89.21.224/2710.89.21.225 – 10.89.21.25410.89.21.255
17710.89.22.0/2710.89.22.1 – 10.89.22.3010.89.22.31
17810.89.22.32/2710.89.22.33 – 10.89.22.6210.89.22.63
17910.89.22.64/2710.89.22.65 – 10.89.22.9410.89.22.95
18010.89.22.96/2710.89.22.97 – 10.89.22.12610.89.22.127
18110.89.22.128/2710.89.22.129 – 10.89.22.15810.89.22.159
18210.89.22.160/2710.89.22.161 – 10.89.22.19010.89.22.191
18310.89.22.192/2710.89.22.193 – 10.89.22.22210.89.22.223
18410.89.22.224/2710.89.22.225 – 10.89.22.25410.89.22.255
18510.89.23.0/2710.89.23.1 – 10.89.23.3010.89.23.31
18610.89.23.32/2710.89.23.33 – 10.89.23.6210.89.23.63
18710.89.23.64/2710.89.23.65 – 10.89.23.9410.89.23.95
18810.89.23.96/2710.89.23.97 – 10.89.23.12610.89.23.127
18910.89.23.128/2710.89.23.129 – 10.89.23.15810.89.23.159
19010.89.23.160/2710.89.23.161 – 10.89.23.19010.89.23.191
19110.89.23.192/2710.89.23.193 – 10.89.23.22210.89.23.223
19210.89.23.224/2710.89.23.225 – 10.89.23.25410.89.23.255
19310.89.24.0/2710.89.24.1 – 10.89.24.3010.89.24.31
19410.89.24.32/2710.89.24.33 – 10.89.24.6210.89.24.63
19510.89.24.64/2710.89.24.65 – 10.89.24.9410.89.24.95
19610.89.24.96/2710.89.24.97 – 10.89.24.12610.89.24.127
19710.89.24.128/2710.89.24.129 – 10.89.24.15810.89.24.159
19810.89.24.160/2710.89.24.161 – 10.89.24.19010.89.24.191
19910.89.24.192/2710.89.24.193 – 10.89.24.22210.89.24.223
20010.89.24.224/2710.89.24.225 – 10.89.24.25410.89.24.255
20110.89.25.0/2710.89.25.1 – 10.89.25.3010.89.25.31
20210.89.25.32/2710.89.25.33 – 10.89.25.6210.89.25.63
20310.89.25.64/2710.89.25.65 – 10.89.25.9410.89.25.95
20410.89.25.96/2710.89.25.97 – 10.89.25.12610.89.25.127
20510.89.25.128/2710.89.25.129 – 10.89.25.15810.89.25.159
20610.89.25.160/2710.89.25.161 – 10.89.25.19010.89.25.191
20710.89.25.192/2710.89.25.193 – 10.89.25.22210.89.25.223
20810.89.25.224/2710.89.25.225 – 10.89.25.25410.89.25.255
20910.89.26.0/2710.89.26.1 – 10.89.26.3010.89.26.31
21010.89.26.32/2710.89.26.33 – 10.89.26.6210.89.26.63
21110.89.26.64/2710.89.26.65 – 10.89.26.9410.89.26.95
21210.89.26.96/2710.89.26.97 – 10.89.26.12610.89.26.127
21310.89.26.128/2710.89.26.129 – 10.89.26.15810.89.26.159
21410.89.26.160/2710.89.26.161 – 10.89.26.19010.89.26.191
21510.89.26.192/2710.89.26.193 – 10.89.26.22210.89.26.223
21610.89.26.224/2710.89.26.225 – 10.89.26.25410.89.26.255
21710.89.27.0/2710.89.27.1 – 10.89.27.3010.89.27.31
21810.89.27.32/2710.89.27.33 – 10.89.27.6210.89.27.63
21910.89.27.64/2710.89.27.65 – 10.89.27.9410.89.27.95
22010.89.27.96/2710.89.27.97 – 10.89.27.12610.89.27.127
22110.89.27.128/2710.89.27.129 – 10.89.27.15810.89.27.159
22210.89.27.160/2710.89.27.161 – 10.89.27.19010.89.27.191
22310.89.27.192/2710.89.27.193 – 10.89.27.22210.89.27.223
22410.89.27.224/2710.89.27.225 – 10.89.27.25410.89.27.255
22510.89.28.0/2710.89.28.1 – 10.89.28.3010.89.28.31
22610.89.28.32/2710.89.28.33 – 10.89.28.6210.89.28.63
22710.89.28.64/2710.89.28.65 – 10.89.28.9410.89.28.95
22810.89.28.96/2710.89.28.97 – 10.89.28.12610.89.28.127
22910.89.28.128/2710.89.28.129 – 10.89.28.15810.89.28.159
23010.89.28.160/2710.89.28.161 – 10.89.28.19010.89.28.191
23110.89.28.192/2710.89.28.193 – 10.89.28.22210.89.28.223
23210.89.28.224/2710.89.28.225 – 10.89.28.25410.89.28.255
23310.89.29.0/2710.89.29.1 – 10.89.29.3010.89.29.31
23410.89.29.32/2710.89.29.33 – 10.89.29.6210.89.29.63
23510.89.29.64/2710.89.29.65 – 10.89.29.9410.89.29.95
23610.89.29.96/2710.89.29.97 – 10.89.29.12610.89.29.127
23710.89.29.128/2710.89.29.129 – 10.89.29.15810.89.29.159
23810.89.29.160/2710.89.29.161 – 10.89.29.19010.89.29.191
23910.89.29.192/2710.89.29.193 – 10.89.29.22210.89.29.223
24010.89.29.224/2710.89.29.225 – 10.89.29.25410.89.29.255
24110.89.30.0/2710.89.30.1 – 10.89.30.3010.89.30.31
24210.89.30.32/2710.89.30.33 – 10.89.30.6210.89.30.63
24310.89.30.64/2710.89.30.65 – 10.89.30.9410.89.30.95
24410.89.30.96/2710.89.30.97 – 10.89.30.12610.89.30.127
24510.89.30.128/2710.89.30.129 – 10.89.30.15810.89.30.159
24610.89.30.160/2710.89.30.161 – 10.89.30.19010.89.30.191
24710.89.30.192/2710.89.30.193 – 10.89.30.22210.89.30.223
24810.89.30.224/2710.89.30.225 – 10.89.30.25410.89.30.255
24910.89.31.0/2710.89.31.1 – 10.89.31.3010.89.31.31
25010.89.31.32/2710.89.31.33 – 10.89.31.6210.89.31.63
25110.89.31.64/2710.89.31.65 – 10.89.31.9410.89.31.95
25210.89.31.96/2710.89.31.97 – 10.89.31.12610.89.31.127
25310.89.31.128/2710.89.31.129 – 10.89.31.15810.89.31.159
25410.89.31.160/2710.89.31.161 – 10.89.31.19010.89.31.191
25510.89.31.192/2710.89.31.193 – 10.89.31.22210.89.31.223
25610.89.31.224/2710.89.31.225 – 10.89.31.25410.89.31.255

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 /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 →