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)10.42.0.0/16
network10.42.0.0/16
broadcast10.42.255.255
first host10.42.0.1
last host10.42.255.254
subnet mask255.255.0.0
wildcard0.0.255.255
addresses65,536
usable hosts65,534
classA
ipcalc 10.42.0.0/16
address00001010.00101010.00000000.00000000
subnet mask11111111.11111111.00000000.00000000
network00001010.00101010.00000000.00000000
broadcast00001010.00101010.11111111.11111111
green = network part, grey = host part
hex0x0a2a0000
decimal170524672
reverse dns0.0.42.10.in-addr.arpa
ipv4-mapped::ffff:a2a:0

/16 split into /27 · 2,048 subnets

close ×
#networkhost rangebroadcast
110.42.0.0/2710.42.0.1 – 10.42.0.3010.42.0.31
210.42.0.32/2710.42.0.33 – 10.42.0.6210.42.0.63
310.42.0.64/2710.42.0.65 – 10.42.0.9410.42.0.95
410.42.0.96/2710.42.0.97 – 10.42.0.12610.42.0.127
510.42.0.128/2710.42.0.129 – 10.42.0.15810.42.0.159
610.42.0.160/2710.42.0.161 – 10.42.0.19010.42.0.191
710.42.0.192/2710.42.0.193 – 10.42.0.22210.42.0.223
810.42.0.224/2710.42.0.225 – 10.42.0.25410.42.0.255
910.42.1.0/2710.42.1.1 – 10.42.1.3010.42.1.31
1010.42.1.32/2710.42.1.33 – 10.42.1.6210.42.1.63
1110.42.1.64/2710.42.1.65 – 10.42.1.9410.42.1.95
1210.42.1.96/2710.42.1.97 – 10.42.1.12610.42.1.127
1310.42.1.128/2710.42.1.129 – 10.42.1.15810.42.1.159
1410.42.1.160/2710.42.1.161 – 10.42.1.19010.42.1.191
1510.42.1.192/2710.42.1.193 – 10.42.1.22210.42.1.223
1610.42.1.224/2710.42.1.225 – 10.42.1.25410.42.1.255
1710.42.2.0/2710.42.2.1 – 10.42.2.3010.42.2.31
1810.42.2.32/2710.42.2.33 – 10.42.2.6210.42.2.63
1910.42.2.64/2710.42.2.65 – 10.42.2.9410.42.2.95
2010.42.2.96/2710.42.2.97 – 10.42.2.12610.42.2.127
2110.42.2.128/2710.42.2.129 – 10.42.2.15810.42.2.159
2210.42.2.160/2710.42.2.161 – 10.42.2.19010.42.2.191
2310.42.2.192/2710.42.2.193 – 10.42.2.22210.42.2.223
2410.42.2.224/2710.42.2.225 – 10.42.2.25410.42.2.255
2510.42.3.0/2710.42.3.1 – 10.42.3.3010.42.3.31
2610.42.3.32/2710.42.3.33 – 10.42.3.6210.42.3.63
2710.42.3.64/2710.42.3.65 – 10.42.3.9410.42.3.95
2810.42.3.96/2710.42.3.97 – 10.42.3.12610.42.3.127
2910.42.3.128/2710.42.3.129 – 10.42.3.15810.42.3.159
3010.42.3.160/2710.42.3.161 – 10.42.3.19010.42.3.191
3110.42.3.192/2710.42.3.193 – 10.42.3.22210.42.3.223
3210.42.3.224/2710.42.3.225 – 10.42.3.25410.42.3.255
3310.42.4.0/2710.42.4.1 – 10.42.4.3010.42.4.31
3410.42.4.32/2710.42.4.33 – 10.42.4.6210.42.4.63
3510.42.4.64/2710.42.4.65 – 10.42.4.9410.42.4.95
3610.42.4.96/2710.42.4.97 – 10.42.4.12610.42.4.127
3710.42.4.128/2710.42.4.129 – 10.42.4.15810.42.4.159
3810.42.4.160/2710.42.4.161 – 10.42.4.19010.42.4.191
3910.42.4.192/2710.42.4.193 – 10.42.4.22210.42.4.223
4010.42.4.224/2710.42.4.225 – 10.42.4.25410.42.4.255
4110.42.5.0/2710.42.5.1 – 10.42.5.3010.42.5.31
4210.42.5.32/2710.42.5.33 – 10.42.5.6210.42.5.63
4310.42.5.64/2710.42.5.65 – 10.42.5.9410.42.5.95
4410.42.5.96/2710.42.5.97 – 10.42.5.12610.42.5.127
4510.42.5.128/2710.42.5.129 – 10.42.5.15810.42.5.159
4610.42.5.160/2710.42.5.161 – 10.42.5.19010.42.5.191
4710.42.5.192/2710.42.5.193 – 10.42.5.22210.42.5.223
4810.42.5.224/2710.42.5.225 – 10.42.5.25410.42.5.255
4910.42.6.0/2710.42.6.1 – 10.42.6.3010.42.6.31
5010.42.6.32/2710.42.6.33 – 10.42.6.6210.42.6.63
5110.42.6.64/2710.42.6.65 – 10.42.6.9410.42.6.95
5210.42.6.96/2710.42.6.97 – 10.42.6.12610.42.6.127
5310.42.6.128/2710.42.6.129 – 10.42.6.15810.42.6.159
5410.42.6.160/2710.42.6.161 – 10.42.6.19010.42.6.191
5510.42.6.192/2710.42.6.193 – 10.42.6.22210.42.6.223
5610.42.6.224/2710.42.6.225 – 10.42.6.25410.42.6.255
5710.42.7.0/2710.42.7.1 – 10.42.7.3010.42.7.31
5810.42.7.32/2710.42.7.33 – 10.42.7.6210.42.7.63
5910.42.7.64/2710.42.7.65 – 10.42.7.9410.42.7.95
6010.42.7.96/2710.42.7.97 – 10.42.7.12610.42.7.127
6110.42.7.128/2710.42.7.129 – 10.42.7.15810.42.7.159
6210.42.7.160/2710.42.7.161 – 10.42.7.19010.42.7.191
6310.42.7.192/2710.42.7.193 – 10.42.7.22210.42.7.223
6410.42.7.224/2710.42.7.225 – 10.42.7.25410.42.7.255
6510.42.8.0/2710.42.8.1 – 10.42.8.3010.42.8.31
6610.42.8.32/2710.42.8.33 – 10.42.8.6210.42.8.63
6710.42.8.64/2710.42.8.65 – 10.42.8.9410.42.8.95
6810.42.8.96/2710.42.8.97 – 10.42.8.12610.42.8.127
6910.42.8.128/2710.42.8.129 – 10.42.8.15810.42.8.159
7010.42.8.160/2710.42.8.161 – 10.42.8.19010.42.8.191
7110.42.8.192/2710.42.8.193 – 10.42.8.22210.42.8.223
7210.42.8.224/2710.42.8.225 – 10.42.8.25410.42.8.255
7310.42.9.0/2710.42.9.1 – 10.42.9.3010.42.9.31
7410.42.9.32/2710.42.9.33 – 10.42.9.6210.42.9.63
7510.42.9.64/2710.42.9.65 – 10.42.9.9410.42.9.95
7610.42.9.96/2710.42.9.97 – 10.42.9.12610.42.9.127
7710.42.9.128/2710.42.9.129 – 10.42.9.15810.42.9.159
7810.42.9.160/2710.42.9.161 – 10.42.9.19010.42.9.191
7910.42.9.192/2710.42.9.193 – 10.42.9.22210.42.9.223
8010.42.9.224/2710.42.9.225 – 10.42.9.25410.42.9.255
8110.42.10.0/2710.42.10.1 – 10.42.10.3010.42.10.31
8210.42.10.32/2710.42.10.33 – 10.42.10.6210.42.10.63
8310.42.10.64/2710.42.10.65 – 10.42.10.9410.42.10.95
8410.42.10.96/2710.42.10.97 – 10.42.10.12610.42.10.127
8510.42.10.128/2710.42.10.129 – 10.42.10.15810.42.10.159
8610.42.10.160/2710.42.10.161 – 10.42.10.19010.42.10.191
8710.42.10.192/2710.42.10.193 – 10.42.10.22210.42.10.223
8810.42.10.224/2710.42.10.225 – 10.42.10.25410.42.10.255
8910.42.11.0/2710.42.11.1 – 10.42.11.3010.42.11.31
9010.42.11.32/2710.42.11.33 – 10.42.11.6210.42.11.63
9110.42.11.64/2710.42.11.65 – 10.42.11.9410.42.11.95
9210.42.11.96/2710.42.11.97 – 10.42.11.12610.42.11.127
9310.42.11.128/2710.42.11.129 – 10.42.11.15810.42.11.159
9410.42.11.160/2710.42.11.161 – 10.42.11.19010.42.11.191
9510.42.11.192/2710.42.11.193 – 10.42.11.22210.42.11.223
9610.42.11.224/2710.42.11.225 – 10.42.11.25410.42.11.255
9710.42.12.0/2710.42.12.1 – 10.42.12.3010.42.12.31
9810.42.12.32/2710.42.12.33 – 10.42.12.6210.42.12.63
9910.42.12.64/2710.42.12.65 – 10.42.12.9410.42.12.95
10010.42.12.96/2710.42.12.97 – 10.42.12.12610.42.12.127
10110.42.12.128/2710.42.12.129 – 10.42.12.15810.42.12.159
10210.42.12.160/2710.42.12.161 – 10.42.12.19010.42.12.191
10310.42.12.192/2710.42.12.193 – 10.42.12.22210.42.12.223
10410.42.12.224/2710.42.12.225 – 10.42.12.25410.42.12.255
10510.42.13.0/2710.42.13.1 – 10.42.13.3010.42.13.31
10610.42.13.32/2710.42.13.33 – 10.42.13.6210.42.13.63
10710.42.13.64/2710.42.13.65 – 10.42.13.9410.42.13.95
10810.42.13.96/2710.42.13.97 – 10.42.13.12610.42.13.127
10910.42.13.128/2710.42.13.129 – 10.42.13.15810.42.13.159
11010.42.13.160/2710.42.13.161 – 10.42.13.19010.42.13.191
11110.42.13.192/2710.42.13.193 – 10.42.13.22210.42.13.223
11210.42.13.224/2710.42.13.225 – 10.42.13.25410.42.13.255
11310.42.14.0/2710.42.14.1 – 10.42.14.3010.42.14.31
11410.42.14.32/2710.42.14.33 – 10.42.14.6210.42.14.63
11510.42.14.64/2710.42.14.65 – 10.42.14.9410.42.14.95
11610.42.14.96/2710.42.14.97 – 10.42.14.12610.42.14.127
11710.42.14.128/2710.42.14.129 – 10.42.14.15810.42.14.159
11810.42.14.160/2710.42.14.161 – 10.42.14.19010.42.14.191
11910.42.14.192/2710.42.14.193 – 10.42.14.22210.42.14.223
12010.42.14.224/2710.42.14.225 – 10.42.14.25410.42.14.255
12110.42.15.0/2710.42.15.1 – 10.42.15.3010.42.15.31
12210.42.15.32/2710.42.15.33 – 10.42.15.6210.42.15.63
12310.42.15.64/2710.42.15.65 – 10.42.15.9410.42.15.95
12410.42.15.96/2710.42.15.97 – 10.42.15.12610.42.15.127
12510.42.15.128/2710.42.15.129 – 10.42.15.15810.42.15.159
12610.42.15.160/2710.42.15.161 – 10.42.15.19010.42.15.191
12710.42.15.192/2710.42.15.193 – 10.42.15.22210.42.15.223
12810.42.15.224/2710.42.15.225 – 10.42.15.25410.42.15.255
12910.42.16.0/2710.42.16.1 – 10.42.16.3010.42.16.31
13010.42.16.32/2710.42.16.33 – 10.42.16.6210.42.16.63
13110.42.16.64/2710.42.16.65 – 10.42.16.9410.42.16.95
13210.42.16.96/2710.42.16.97 – 10.42.16.12610.42.16.127
13310.42.16.128/2710.42.16.129 – 10.42.16.15810.42.16.159
13410.42.16.160/2710.42.16.161 – 10.42.16.19010.42.16.191
13510.42.16.192/2710.42.16.193 – 10.42.16.22210.42.16.223
13610.42.16.224/2710.42.16.225 – 10.42.16.25410.42.16.255
13710.42.17.0/2710.42.17.1 – 10.42.17.3010.42.17.31
13810.42.17.32/2710.42.17.33 – 10.42.17.6210.42.17.63
13910.42.17.64/2710.42.17.65 – 10.42.17.9410.42.17.95
14010.42.17.96/2710.42.17.97 – 10.42.17.12610.42.17.127
14110.42.17.128/2710.42.17.129 – 10.42.17.15810.42.17.159
14210.42.17.160/2710.42.17.161 – 10.42.17.19010.42.17.191
14310.42.17.192/2710.42.17.193 – 10.42.17.22210.42.17.223
14410.42.17.224/2710.42.17.225 – 10.42.17.25410.42.17.255
14510.42.18.0/2710.42.18.1 – 10.42.18.3010.42.18.31
14610.42.18.32/2710.42.18.33 – 10.42.18.6210.42.18.63
14710.42.18.64/2710.42.18.65 – 10.42.18.9410.42.18.95
14810.42.18.96/2710.42.18.97 – 10.42.18.12610.42.18.127
14910.42.18.128/2710.42.18.129 – 10.42.18.15810.42.18.159
15010.42.18.160/2710.42.18.161 – 10.42.18.19010.42.18.191
15110.42.18.192/2710.42.18.193 – 10.42.18.22210.42.18.223
15210.42.18.224/2710.42.18.225 – 10.42.18.25410.42.18.255
15310.42.19.0/2710.42.19.1 – 10.42.19.3010.42.19.31
15410.42.19.32/2710.42.19.33 – 10.42.19.6210.42.19.63
15510.42.19.64/2710.42.19.65 – 10.42.19.9410.42.19.95
15610.42.19.96/2710.42.19.97 – 10.42.19.12610.42.19.127
15710.42.19.128/2710.42.19.129 – 10.42.19.15810.42.19.159
15810.42.19.160/2710.42.19.161 – 10.42.19.19010.42.19.191
15910.42.19.192/2710.42.19.193 – 10.42.19.22210.42.19.223
16010.42.19.224/2710.42.19.225 – 10.42.19.25410.42.19.255
16110.42.20.0/2710.42.20.1 – 10.42.20.3010.42.20.31
16210.42.20.32/2710.42.20.33 – 10.42.20.6210.42.20.63
16310.42.20.64/2710.42.20.65 – 10.42.20.9410.42.20.95
16410.42.20.96/2710.42.20.97 – 10.42.20.12610.42.20.127
16510.42.20.128/2710.42.20.129 – 10.42.20.15810.42.20.159
16610.42.20.160/2710.42.20.161 – 10.42.20.19010.42.20.191
16710.42.20.192/2710.42.20.193 – 10.42.20.22210.42.20.223
16810.42.20.224/2710.42.20.225 – 10.42.20.25410.42.20.255
16910.42.21.0/2710.42.21.1 – 10.42.21.3010.42.21.31
17010.42.21.32/2710.42.21.33 – 10.42.21.6210.42.21.63
17110.42.21.64/2710.42.21.65 – 10.42.21.9410.42.21.95
17210.42.21.96/2710.42.21.97 – 10.42.21.12610.42.21.127
17310.42.21.128/2710.42.21.129 – 10.42.21.15810.42.21.159
17410.42.21.160/2710.42.21.161 – 10.42.21.19010.42.21.191
17510.42.21.192/2710.42.21.193 – 10.42.21.22210.42.21.223
17610.42.21.224/2710.42.21.225 – 10.42.21.25410.42.21.255
17710.42.22.0/2710.42.22.1 – 10.42.22.3010.42.22.31
17810.42.22.32/2710.42.22.33 – 10.42.22.6210.42.22.63
17910.42.22.64/2710.42.22.65 – 10.42.22.9410.42.22.95
18010.42.22.96/2710.42.22.97 – 10.42.22.12610.42.22.127
18110.42.22.128/2710.42.22.129 – 10.42.22.15810.42.22.159
18210.42.22.160/2710.42.22.161 – 10.42.22.19010.42.22.191
18310.42.22.192/2710.42.22.193 – 10.42.22.22210.42.22.223
18410.42.22.224/2710.42.22.225 – 10.42.22.25410.42.22.255
18510.42.23.0/2710.42.23.1 – 10.42.23.3010.42.23.31
18610.42.23.32/2710.42.23.33 – 10.42.23.6210.42.23.63
18710.42.23.64/2710.42.23.65 – 10.42.23.9410.42.23.95
18810.42.23.96/2710.42.23.97 – 10.42.23.12610.42.23.127
18910.42.23.128/2710.42.23.129 – 10.42.23.15810.42.23.159
19010.42.23.160/2710.42.23.161 – 10.42.23.19010.42.23.191
19110.42.23.192/2710.42.23.193 – 10.42.23.22210.42.23.223
19210.42.23.224/2710.42.23.225 – 10.42.23.25410.42.23.255
19310.42.24.0/2710.42.24.1 – 10.42.24.3010.42.24.31
19410.42.24.32/2710.42.24.33 – 10.42.24.6210.42.24.63
19510.42.24.64/2710.42.24.65 – 10.42.24.9410.42.24.95
19610.42.24.96/2710.42.24.97 – 10.42.24.12610.42.24.127
19710.42.24.128/2710.42.24.129 – 10.42.24.15810.42.24.159
19810.42.24.160/2710.42.24.161 – 10.42.24.19010.42.24.191
19910.42.24.192/2710.42.24.193 – 10.42.24.22210.42.24.223
20010.42.24.224/2710.42.24.225 – 10.42.24.25410.42.24.255
20110.42.25.0/2710.42.25.1 – 10.42.25.3010.42.25.31
20210.42.25.32/2710.42.25.33 – 10.42.25.6210.42.25.63
20310.42.25.64/2710.42.25.65 – 10.42.25.9410.42.25.95
20410.42.25.96/2710.42.25.97 – 10.42.25.12610.42.25.127
20510.42.25.128/2710.42.25.129 – 10.42.25.15810.42.25.159
20610.42.25.160/2710.42.25.161 – 10.42.25.19010.42.25.191
20710.42.25.192/2710.42.25.193 – 10.42.25.22210.42.25.223
20810.42.25.224/2710.42.25.225 – 10.42.25.25410.42.25.255
20910.42.26.0/2710.42.26.1 – 10.42.26.3010.42.26.31
21010.42.26.32/2710.42.26.33 – 10.42.26.6210.42.26.63
21110.42.26.64/2710.42.26.65 – 10.42.26.9410.42.26.95
21210.42.26.96/2710.42.26.97 – 10.42.26.12610.42.26.127
21310.42.26.128/2710.42.26.129 – 10.42.26.15810.42.26.159
21410.42.26.160/2710.42.26.161 – 10.42.26.19010.42.26.191
21510.42.26.192/2710.42.26.193 – 10.42.26.22210.42.26.223
21610.42.26.224/2710.42.26.225 – 10.42.26.25410.42.26.255
21710.42.27.0/2710.42.27.1 – 10.42.27.3010.42.27.31
21810.42.27.32/2710.42.27.33 – 10.42.27.6210.42.27.63
21910.42.27.64/2710.42.27.65 – 10.42.27.9410.42.27.95
22010.42.27.96/2710.42.27.97 – 10.42.27.12610.42.27.127
22110.42.27.128/2710.42.27.129 – 10.42.27.15810.42.27.159
22210.42.27.160/2710.42.27.161 – 10.42.27.19010.42.27.191
22310.42.27.192/2710.42.27.193 – 10.42.27.22210.42.27.223
22410.42.27.224/2710.42.27.225 – 10.42.27.25410.42.27.255
22510.42.28.0/2710.42.28.1 – 10.42.28.3010.42.28.31
22610.42.28.32/2710.42.28.33 – 10.42.28.6210.42.28.63
22710.42.28.64/2710.42.28.65 – 10.42.28.9410.42.28.95
22810.42.28.96/2710.42.28.97 – 10.42.28.12610.42.28.127
22910.42.28.128/2710.42.28.129 – 10.42.28.15810.42.28.159
23010.42.28.160/2710.42.28.161 – 10.42.28.19010.42.28.191
23110.42.28.192/2710.42.28.193 – 10.42.28.22210.42.28.223
23210.42.28.224/2710.42.28.225 – 10.42.28.25410.42.28.255
23310.42.29.0/2710.42.29.1 – 10.42.29.3010.42.29.31
23410.42.29.32/2710.42.29.33 – 10.42.29.6210.42.29.63
23510.42.29.64/2710.42.29.65 – 10.42.29.9410.42.29.95
23610.42.29.96/2710.42.29.97 – 10.42.29.12610.42.29.127
23710.42.29.128/2710.42.29.129 – 10.42.29.15810.42.29.159
23810.42.29.160/2710.42.29.161 – 10.42.29.19010.42.29.191
23910.42.29.192/2710.42.29.193 – 10.42.29.22210.42.29.223
24010.42.29.224/2710.42.29.225 – 10.42.29.25410.42.29.255
24110.42.30.0/2710.42.30.1 – 10.42.30.3010.42.30.31
24210.42.30.32/2710.42.30.33 – 10.42.30.6210.42.30.63
24310.42.30.64/2710.42.30.65 – 10.42.30.9410.42.30.95
24410.42.30.96/2710.42.30.97 – 10.42.30.12610.42.30.127
24510.42.30.128/2710.42.30.129 – 10.42.30.15810.42.30.159
24610.42.30.160/2710.42.30.161 – 10.42.30.19010.42.30.191
24710.42.30.192/2710.42.30.193 – 10.42.30.22210.42.30.223
24810.42.30.224/2710.42.30.225 – 10.42.30.25410.42.30.255
24910.42.31.0/2710.42.31.1 – 10.42.31.3010.42.31.31
25010.42.31.32/2710.42.31.33 – 10.42.31.6210.42.31.63
25110.42.31.64/2710.42.31.65 – 10.42.31.9410.42.31.95
25210.42.31.96/2710.42.31.97 – 10.42.31.12610.42.31.127
25310.42.31.128/2710.42.31.129 – 10.42.31.15810.42.31.159
25410.42.31.160/2710.42.31.161 – 10.42.31.19010.42.31.191
25510.42.31.192/2710.42.31.193 – 10.42.31.22210.42.31.223
25610.42.31.224/2710.42.31.225 – 10.42.31.25410.42.31.255

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 →