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)10.30.0.0/16
network10.30.0.0/16
broadcast10.30.255.255
first host10.30.0.1
last host10.30.255.254
subnet mask255.255.0.0
wildcard0.0.255.255
addresses65,536
usable hosts65,534
classA
ipcalc 10.30.0.0/16
address00001010.00011110.00000000.00000000
subnet mask11111111.11111111.00000000.00000000
network00001010.00011110.00000000.00000000
broadcast00001010.00011110.11111111.11111111
green = network part, grey = host part
hex0x0a1e0000
decimal169738240
reverse dns0.0.30.10.in-addr.arpa
ipv4-mapped::ffff:a1e:0

/16 split into /28 · 4,096 subnets

close ×
#networkhost rangebroadcast
110.30.0.0/2810.30.0.1 – 10.30.0.1410.30.0.15
210.30.0.16/2810.30.0.17 – 10.30.0.3010.30.0.31
310.30.0.32/2810.30.0.33 – 10.30.0.4610.30.0.47
410.30.0.48/2810.30.0.49 – 10.30.0.6210.30.0.63
510.30.0.64/2810.30.0.65 – 10.30.0.7810.30.0.79
610.30.0.80/2810.30.0.81 – 10.30.0.9410.30.0.95
710.30.0.96/2810.30.0.97 – 10.30.0.11010.30.0.111
810.30.0.112/2810.30.0.113 – 10.30.0.12610.30.0.127
910.30.0.128/2810.30.0.129 – 10.30.0.14210.30.0.143
1010.30.0.144/2810.30.0.145 – 10.30.0.15810.30.0.159
1110.30.0.160/2810.30.0.161 – 10.30.0.17410.30.0.175
1210.30.0.176/2810.30.0.177 – 10.30.0.19010.30.0.191
1310.30.0.192/2810.30.0.193 – 10.30.0.20610.30.0.207
1410.30.0.208/2810.30.0.209 – 10.30.0.22210.30.0.223
1510.30.0.224/2810.30.0.225 – 10.30.0.23810.30.0.239
1610.30.0.240/2810.30.0.241 – 10.30.0.25410.30.0.255
1710.30.1.0/2810.30.1.1 – 10.30.1.1410.30.1.15
1810.30.1.16/2810.30.1.17 – 10.30.1.3010.30.1.31
1910.30.1.32/2810.30.1.33 – 10.30.1.4610.30.1.47
2010.30.1.48/2810.30.1.49 – 10.30.1.6210.30.1.63
2110.30.1.64/2810.30.1.65 – 10.30.1.7810.30.1.79
2210.30.1.80/2810.30.1.81 – 10.30.1.9410.30.1.95
2310.30.1.96/2810.30.1.97 – 10.30.1.11010.30.1.111
2410.30.1.112/2810.30.1.113 – 10.30.1.12610.30.1.127
2510.30.1.128/2810.30.1.129 – 10.30.1.14210.30.1.143
2610.30.1.144/2810.30.1.145 – 10.30.1.15810.30.1.159
2710.30.1.160/2810.30.1.161 – 10.30.1.17410.30.1.175
2810.30.1.176/2810.30.1.177 – 10.30.1.19010.30.1.191
2910.30.1.192/2810.30.1.193 – 10.30.1.20610.30.1.207
3010.30.1.208/2810.30.1.209 – 10.30.1.22210.30.1.223
3110.30.1.224/2810.30.1.225 – 10.30.1.23810.30.1.239
3210.30.1.240/2810.30.1.241 – 10.30.1.25410.30.1.255
3310.30.2.0/2810.30.2.1 – 10.30.2.1410.30.2.15
3410.30.2.16/2810.30.2.17 – 10.30.2.3010.30.2.31
3510.30.2.32/2810.30.2.33 – 10.30.2.4610.30.2.47
3610.30.2.48/2810.30.2.49 – 10.30.2.6210.30.2.63
3710.30.2.64/2810.30.2.65 – 10.30.2.7810.30.2.79
3810.30.2.80/2810.30.2.81 – 10.30.2.9410.30.2.95
3910.30.2.96/2810.30.2.97 – 10.30.2.11010.30.2.111
4010.30.2.112/2810.30.2.113 – 10.30.2.12610.30.2.127
4110.30.2.128/2810.30.2.129 – 10.30.2.14210.30.2.143
4210.30.2.144/2810.30.2.145 – 10.30.2.15810.30.2.159
4310.30.2.160/2810.30.2.161 – 10.30.2.17410.30.2.175
4410.30.2.176/2810.30.2.177 – 10.30.2.19010.30.2.191
4510.30.2.192/2810.30.2.193 – 10.30.2.20610.30.2.207
4610.30.2.208/2810.30.2.209 – 10.30.2.22210.30.2.223
4710.30.2.224/2810.30.2.225 – 10.30.2.23810.30.2.239
4810.30.2.240/2810.30.2.241 – 10.30.2.25410.30.2.255
4910.30.3.0/2810.30.3.1 – 10.30.3.1410.30.3.15
5010.30.3.16/2810.30.3.17 – 10.30.3.3010.30.3.31
5110.30.3.32/2810.30.3.33 – 10.30.3.4610.30.3.47
5210.30.3.48/2810.30.3.49 – 10.30.3.6210.30.3.63
5310.30.3.64/2810.30.3.65 – 10.30.3.7810.30.3.79
5410.30.3.80/2810.30.3.81 – 10.30.3.9410.30.3.95
5510.30.3.96/2810.30.3.97 – 10.30.3.11010.30.3.111
5610.30.3.112/2810.30.3.113 – 10.30.3.12610.30.3.127
5710.30.3.128/2810.30.3.129 – 10.30.3.14210.30.3.143
5810.30.3.144/2810.30.3.145 – 10.30.3.15810.30.3.159
5910.30.3.160/2810.30.3.161 – 10.30.3.17410.30.3.175
6010.30.3.176/2810.30.3.177 – 10.30.3.19010.30.3.191
6110.30.3.192/2810.30.3.193 – 10.30.3.20610.30.3.207
6210.30.3.208/2810.30.3.209 – 10.30.3.22210.30.3.223
6310.30.3.224/2810.30.3.225 – 10.30.3.23810.30.3.239
6410.30.3.240/2810.30.3.241 – 10.30.3.25410.30.3.255
6510.30.4.0/2810.30.4.1 – 10.30.4.1410.30.4.15
6610.30.4.16/2810.30.4.17 – 10.30.4.3010.30.4.31
6710.30.4.32/2810.30.4.33 – 10.30.4.4610.30.4.47
6810.30.4.48/2810.30.4.49 – 10.30.4.6210.30.4.63
6910.30.4.64/2810.30.4.65 – 10.30.4.7810.30.4.79
7010.30.4.80/2810.30.4.81 – 10.30.4.9410.30.4.95
7110.30.4.96/2810.30.4.97 – 10.30.4.11010.30.4.111
7210.30.4.112/2810.30.4.113 – 10.30.4.12610.30.4.127
7310.30.4.128/2810.30.4.129 – 10.30.4.14210.30.4.143
7410.30.4.144/2810.30.4.145 – 10.30.4.15810.30.4.159
7510.30.4.160/2810.30.4.161 – 10.30.4.17410.30.4.175
7610.30.4.176/2810.30.4.177 – 10.30.4.19010.30.4.191
7710.30.4.192/2810.30.4.193 – 10.30.4.20610.30.4.207
7810.30.4.208/2810.30.4.209 – 10.30.4.22210.30.4.223
7910.30.4.224/2810.30.4.225 – 10.30.4.23810.30.4.239
8010.30.4.240/2810.30.4.241 – 10.30.4.25410.30.4.255
8110.30.5.0/2810.30.5.1 – 10.30.5.1410.30.5.15
8210.30.5.16/2810.30.5.17 – 10.30.5.3010.30.5.31
8310.30.5.32/2810.30.5.33 – 10.30.5.4610.30.5.47
8410.30.5.48/2810.30.5.49 – 10.30.5.6210.30.5.63
8510.30.5.64/2810.30.5.65 – 10.30.5.7810.30.5.79
8610.30.5.80/2810.30.5.81 – 10.30.5.9410.30.5.95
8710.30.5.96/2810.30.5.97 – 10.30.5.11010.30.5.111
8810.30.5.112/2810.30.5.113 – 10.30.5.12610.30.5.127
8910.30.5.128/2810.30.5.129 – 10.30.5.14210.30.5.143
9010.30.5.144/2810.30.5.145 – 10.30.5.15810.30.5.159
9110.30.5.160/2810.30.5.161 – 10.30.5.17410.30.5.175
9210.30.5.176/2810.30.5.177 – 10.30.5.19010.30.5.191
9310.30.5.192/2810.30.5.193 – 10.30.5.20610.30.5.207
9410.30.5.208/2810.30.5.209 – 10.30.5.22210.30.5.223
9510.30.5.224/2810.30.5.225 – 10.30.5.23810.30.5.239
9610.30.5.240/2810.30.5.241 – 10.30.5.25410.30.5.255
9710.30.6.0/2810.30.6.1 – 10.30.6.1410.30.6.15
9810.30.6.16/2810.30.6.17 – 10.30.6.3010.30.6.31
9910.30.6.32/2810.30.6.33 – 10.30.6.4610.30.6.47
10010.30.6.48/2810.30.6.49 – 10.30.6.6210.30.6.63
10110.30.6.64/2810.30.6.65 – 10.30.6.7810.30.6.79
10210.30.6.80/2810.30.6.81 – 10.30.6.9410.30.6.95
10310.30.6.96/2810.30.6.97 – 10.30.6.11010.30.6.111
10410.30.6.112/2810.30.6.113 – 10.30.6.12610.30.6.127
10510.30.6.128/2810.30.6.129 – 10.30.6.14210.30.6.143
10610.30.6.144/2810.30.6.145 – 10.30.6.15810.30.6.159
10710.30.6.160/2810.30.6.161 – 10.30.6.17410.30.6.175
10810.30.6.176/2810.30.6.177 – 10.30.6.19010.30.6.191
10910.30.6.192/2810.30.6.193 – 10.30.6.20610.30.6.207
11010.30.6.208/2810.30.6.209 – 10.30.6.22210.30.6.223
11110.30.6.224/2810.30.6.225 – 10.30.6.23810.30.6.239
11210.30.6.240/2810.30.6.241 – 10.30.6.25410.30.6.255
11310.30.7.0/2810.30.7.1 – 10.30.7.1410.30.7.15
11410.30.7.16/2810.30.7.17 – 10.30.7.3010.30.7.31
11510.30.7.32/2810.30.7.33 – 10.30.7.4610.30.7.47
11610.30.7.48/2810.30.7.49 – 10.30.7.6210.30.7.63
11710.30.7.64/2810.30.7.65 – 10.30.7.7810.30.7.79
11810.30.7.80/2810.30.7.81 – 10.30.7.9410.30.7.95
11910.30.7.96/2810.30.7.97 – 10.30.7.11010.30.7.111
12010.30.7.112/2810.30.7.113 – 10.30.7.12610.30.7.127
12110.30.7.128/2810.30.7.129 – 10.30.7.14210.30.7.143
12210.30.7.144/2810.30.7.145 – 10.30.7.15810.30.7.159
12310.30.7.160/2810.30.7.161 – 10.30.7.17410.30.7.175
12410.30.7.176/2810.30.7.177 – 10.30.7.19010.30.7.191
12510.30.7.192/2810.30.7.193 – 10.30.7.20610.30.7.207
12610.30.7.208/2810.30.7.209 – 10.30.7.22210.30.7.223
12710.30.7.224/2810.30.7.225 – 10.30.7.23810.30.7.239
12810.30.7.240/2810.30.7.241 – 10.30.7.25410.30.7.255
12910.30.8.0/2810.30.8.1 – 10.30.8.1410.30.8.15
13010.30.8.16/2810.30.8.17 – 10.30.8.3010.30.8.31
13110.30.8.32/2810.30.8.33 – 10.30.8.4610.30.8.47
13210.30.8.48/2810.30.8.49 – 10.30.8.6210.30.8.63
13310.30.8.64/2810.30.8.65 – 10.30.8.7810.30.8.79
13410.30.8.80/2810.30.8.81 – 10.30.8.9410.30.8.95
13510.30.8.96/2810.30.8.97 – 10.30.8.11010.30.8.111
13610.30.8.112/2810.30.8.113 – 10.30.8.12610.30.8.127
13710.30.8.128/2810.30.8.129 – 10.30.8.14210.30.8.143
13810.30.8.144/2810.30.8.145 – 10.30.8.15810.30.8.159
13910.30.8.160/2810.30.8.161 – 10.30.8.17410.30.8.175
14010.30.8.176/2810.30.8.177 – 10.30.8.19010.30.8.191
14110.30.8.192/2810.30.8.193 – 10.30.8.20610.30.8.207
14210.30.8.208/2810.30.8.209 – 10.30.8.22210.30.8.223
14310.30.8.224/2810.30.8.225 – 10.30.8.23810.30.8.239
14410.30.8.240/2810.30.8.241 – 10.30.8.25410.30.8.255
14510.30.9.0/2810.30.9.1 – 10.30.9.1410.30.9.15
14610.30.9.16/2810.30.9.17 – 10.30.9.3010.30.9.31
14710.30.9.32/2810.30.9.33 – 10.30.9.4610.30.9.47
14810.30.9.48/2810.30.9.49 – 10.30.9.6210.30.9.63
14910.30.9.64/2810.30.9.65 – 10.30.9.7810.30.9.79
15010.30.9.80/2810.30.9.81 – 10.30.9.9410.30.9.95
15110.30.9.96/2810.30.9.97 – 10.30.9.11010.30.9.111
15210.30.9.112/2810.30.9.113 – 10.30.9.12610.30.9.127
15310.30.9.128/2810.30.9.129 – 10.30.9.14210.30.9.143
15410.30.9.144/2810.30.9.145 – 10.30.9.15810.30.9.159
15510.30.9.160/2810.30.9.161 – 10.30.9.17410.30.9.175
15610.30.9.176/2810.30.9.177 – 10.30.9.19010.30.9.191
15710.30.9.192/2810.30.9.193 – 10.30.9.20610.30.9.207
15810.30.9.208/2810.30.9.209 – 10.30.9.22210.30.9.223
15910.30.9.224/2810.30.9.225 – 10.30.9.23810.30.9.239
16010.30.9.240/2810.30.9.241 – 10.30.9.25410.30.9.255
16110.30.10.0/2810.30.10.1 – 10.30.10.1410.30.10.15
16210.30.10.16/2810.30.10.17 – 10.30.10.3010.30.10.31
16310.30.10.32/2810.30.10.33 – 10.30.10.4610.30.10.47
16410.30.10.48/2810.30.10.49 – 10.30.10.6210.30.10.63
16510.30.10.64/2810.30.10.65 – 10.30.10.7810.30.10.79
16610.30.10.80/2810.30.10.81 – 10.30.10.9410.30.10.95
16710.30.10.96/2810.30.10.97 – 10.30.10.11010.30.10.111
16810.30.10.112/2810.30.10.113 – 10.30.10.12610.30.10.127
16910.30.10.128/2810.30.10.129 – 10.30.10.14210.30.10.143
17010.30.10.144/2810.30.10.145 – 10.30.10.15810.30.10.159
17110.30.10.160/2810.30.10.161 – 10.30.10.17410.30.10.175
17210.30.10.176/2810.30.10.177 – 10.30.10.19010.30.10.191
17310.30.10.192/2810.30.10.193 – 10.30.10.20610.30.10.207
17410.30.10.208/2810.30.10.209 – 10.30.10.22210.30.10.223
17510.30.10.224/2810.30.10.225 – 10.30.10.23810.30.10.239
17610.30.10.240/2810.30.10.241 – 10.30.10.25410.30.10.255
17710.30.11.0/2810.30.11.1 – 10.30.11.1410.30.11.15
17810.30.11.16/2810.30.11.17 – 10.30.11.3010.30.11.31
17910.30.11.32/2810.30.11.33 – 10.30.11.4610.30.11.47
18010.30.11.48/2810.30.11.49 – 10.30.11.6210.30.11.63
18110.30.11.64/2810.30.11.65 – 10.30.11.7810.30.11.79
18210.30.11.80/2810.30.11.81 – 10.30.11.9410.30.11.95
18310.30.11.96/2810.30.11.97 – 10.30.11.11010.30.11.111
18410.30.11.112/2810.30.11.113 – 10.30.11.12610.30.11.127
18510.30.11.128/2810.30.11.129 – 10.30.11.14210.30.11.143
18610.30.11.144/2810.30.11.145 – 10.30.11.15810.30.11.159
18710.30.11.160/2810.30.11.161 – 10.30.11.17410.30.11.175
18810.30.11.176/2810.30.11.177 – 10.30.11.19010.30.11.191
18910.30.11.192/2810.30.11.193 – 10.30.11.20610.30.11.207
19010.30.11.208/2810.30.11.209 – 10.30.11.22210.30.11.223
19110.30.11.224/2810.30.11.225 – 10.30.11.23810.30.11.239
19210.30.11.240/2810.30.11.241 – 10.30.11.25410.30.11.255
19310.30.12.0/2810.30.12.1 – 10.30.12.1410.30.12.15
19410.30.12.16/2810.30.12.17 – 10.30.12.3010.30.12.31
19510.30.12.32/2810.30.12.33 – 10.30.12.4610.30.12.47
19610.30.12.48/2810.30.12.49 – 10.30.12.6210.30.12.63
19710.30.12.64/2810.30.12.65 – 10.30.12.7810.30.12.79
19810.30.12.80/2810.30.12.81 – 10.30.12.9410.30.12.95
19910.30.12.96/2810.30.12.97 – 10.30.12.11010.30.12.111
20010.30.12.112/2810.30.12.113 – 10.30.12.12610.30.12.127
20110.30.12.128/2810.30.12.129 – 10.30.12.14210.30.12.143
20210.30.12.144/2810.30.12.145 – 10.30.12.15810.30.12.159
20310.30.12.160/2810.30.12.161 – 10.30.12.17410.30.12.175
20410.30.12.176/2810.30.12.177 – 10.30.12.19010.30.12.191
20510.30.12.192/2810.30.12.193 – 10.30.12.20610.30.12.207
20610.30.12.208/2810.30.12.209 – 10.30.12.22210.30.12.223
20710.30.12.224/2810.30.12.225 – 10.30.12.23810.30.12.239
20810.30.12.240/2810.30.12.241 – 10.30.12.25410.30.12.255
20910.30.13.0/2810.30.13.1 – 10.30.13.1410.30.13.15
21010.30.13.16/2810.30.13.17 – 10.30.13.3010.30.13.31
21110.30.13.32/2810.30.13.33 – 10.30.13.4610.30.13.47
21210.30.13.48/2810.30.13.49 – 10.30.13.6210.30.13.63
21310.30.13.64/2810.30.13.65 – 10.30.13.7810.30.13.79
21410.30.13.80/2810.30.13.81 – 10.30.13.9410.30.13.95
21510.30.13.96/2810.30.13.97 – 10.30.13.11010.30.13.111
21610.30.13.112/2810.30.13.113 – 10.30.13.12610.30.13.127
21710.30.13.128/2810.30.13.129 – 10.30.13.14210.30.13.143
21810.30.13.144/2810.30.13.145 – 10.30.13.15810.30.13.159
21910.30.13.160/2810.30.13.161 – 10.30.13.17410.30.13.175
22010.30.13.176/2810.30.13.177 – 10.30.13.19010.30.13.191
22110.30.13.192/2810.30.13.193 – 10.30.13.20610.30.13.207
22210.30.13.208/2810.30.13.209 – 10.30.13.22210.30.13.223
22310.30.13.224/2810.30.13.225 – 10.30.13.23810.30.13.239
22410.30.13.240/2810.30.13.241 – 10.30.13.25410.30.13.255
22510.30.14.0/2810.30.14.1 – 10.30.14.1410.30.14.15
22610.30.14.16/2810.30.14.17 – 10.30.14.3010.30.14.31
22710.30.14.32/2810.30.14.33 – 10.30.14.4610.30.14.47
22810.30.14.48/2810.30.14.49 – 10.30.14.6210.30.14.63
22910.30.14.64/2810.30.14.65 – 10.30.14.7810.30.14.79
23010.30.14.80/2810.30.14.81 – 10.30.14.9410.30.14.95
23110.30.14.96/2810.30.14.97 – 10.30.14.11010.30.14.111
23210.30.14.112/2810.30.14.113 – 10.30.14.12610.30.14.127
23310.30.14.128/2810.30.14.129 – 10.30.14.14210.30.14.143
23410.30.14.144/2810.30.14.145 – 10.30.14.15810.30.14.159
23510.30.14.160/2810.30.14.161 – 10.30.14.17410.30.14.175
23610.30.14.176/2810.30.14.177 – 10.30.14.19010.30.14.191
23710.30.14.192/2810.30.14.193 – 10.30.14.20610.30.14.207
23810.30.14.208/2810.30.14.209 – 10.30.14.22210.30.14.223
23910.30.14.224/2810.30.14.225 – 10.30.14.23810.30.14.239
24010.30.14.240/2810.30.14.241 – 10.30.14.25410.30.14.255
24110.30.15.0/2810.30.15.1 – 10.30.15.1410.30.15.15
24210.30.15.16/2810.30.15.17 – 10.30.15.3010.30.15.31
24310.30.15.32/2810.30.15.33 – 10.30.15.4610.30.15.47
24410.30.15.48/2810.30.15.49 – 10.30.15.6210.30.15.63
24510.30.15.64/2810.30.15.65 – 10.30.15.7810.30.15.79
24610.30.15.80/2810.30.15.81 – 10.30.15.9410.30.15.95
24710.30.15.96/2810.30.15.97 – 10.30.15.11010.30.15.111
24810.30.15.112/2810.30.15.113 – 10.30.15.12610.30.15.127
24910.30.15.128/2810.30.15.129 – 10.30.15.14210.30.15.143
25010.30.15.144/2810.30.15.145 – 10.30.15.15810.30.15.159
25110.30.15.160/2810.30.15.161 – 10.30.15.17410.30.15.175
25210.30.15.176/2810.30.15.177 – 10.30.15.19010.30.15.191
25310.30.15.192/2810.30.15.193 – 10.30.15.20610.30.15.207
25410.30.15.208/2810.30.15.209 – 10.30.15.22210.30.15.223
25510.30.15.224/2810.30.15.225 – 10.30.15.23810.30.15.239
25610.30.15.240/2810.30.15.241 – 10.30.15.25410.30.15.255

showing 256 of 4,096

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 →