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)10.42.0.0/15
network10.42.0.0/15
broadcast10.43.255.255
first host10.42.0.1
last host10.43.255.254
subnet mask255.254.0.0
wildcard0.1.255.255
addresses131,072
usable hosts131,070
classA
ipcalc 10.42.0.0/15
address00001010.00101010.00000000.00000000
subnet mask11111111.11111110.00000000.00000000
network00001010.00101010.00000000.00000000
broadcast00001010.00101011.11111111.11111111
green = network part, grey = host part
hex0x0a2a0000
decimal170524672
reverse dns0.0.42.10.in-addr.arpa
ipv4-mapped::ffff:a2a:0

/15 split into /26 · 2,048 subnets

close ×
#networkhost rangebroadcast
110.42.0.0/2610.42.0.1 – 10.42.0.6210.42.0.63
210.42.0.64/2610.42.0.65 – 10.42.0.12610.42.0.127
310.42.0.128/2610.42.0.129 – 10.42.0.19010.42.0.191
410.42.0.192/2610.42.0.193 – 10.42.0.25410.42.0.255
510.42.1.0/2610.42.1.1 – 10.42.1.6210.42.1.63
610.42.1.64/2610.42.1.65 – 10.42.1.12610.42.1.127
710.42.1.128/2610.42.1.129 – 10.42.1.19010.42.1.191
810.42.1.192/2610.42.1.193 – 10.42.1.25410.42.1.255
910.42.2.0/2610.42.2.1 – 10.42.2.6210.42.2.63
1010.42.2.64/2610.42.2.65 – 10.42.2.12610.42.2.127
1110.42.2.128/2610.42.2.129 – 10.42.2.19010.42.2.191
1210.42.2.192/2610.42.2.193 – 10.42.2.25410.42.2.255
1310.42.3.0/2610.42.3.1 – 10.42.3.6210.42.3.63
1410.42.3.64/2610.42.3.65 – 10.42.3.12610.42.3.127
1510.42.3.128/2610.42.3.129 – 10.42.3.19010.42.3.191
1610.42.3.192/2610.42.3.193 – 10.42.3.25410.42.3.255
1710.42.4.0/2610.42.4.1 – 10.42.4.6210.42.4.63
1810.42.4.64/2610.42.4.65 – 10.42.4.12610.42.4.127
1910.42.4.128/2610.42.4.129 – 10.42.4.19010.42.4.191
2010.42.4.192/2610.42.4.193 – 10.42.4.25410.42.4.255
2110.42.5.0/2610.42.5.1 – 10.42.5.6210.42.5.63
2210.42.5.64/2610.42.5.65 – 10.42.5.12610.42.5.127
2310.42.5.128/2610.42.5.129 – 10.42.5.19010.42.5.191
2410.42.5.192/2610.42.5.193 – 10.42.5.25410.42.5.255
2510.42.6.0/2610.42.6.1 – 10.42.6.6210.42.6.63
2610.42.6.64/2610.42.6.65 – 10.42.6.12610.42.6.127
2710.42.6.128/2610.42.6.129 – 10.42.6.19010.42.6.191
2810.42.6.192/2610.42.6.193 – 10.42.6.25410.42.6.255
2910.42.7.0/2610.42.7.1 – 10.42.7.6210.42.7.63
3010.42.7.64/2610.42.7.65 – 10.42.7.12610.42.7.127
3110.42.7.128/2610.42.7.129 – 10.42.7.19010.42.7.191
3210.42.7.192/2610.42.7.193 – 10.42.7.25410.42.7.255
3310.42.8.0/2610.42.8.1 – 10.42.8.6210.42.8.63
3410.42.8.64/2610.42.8.65 – 10.42.8.12610.42.8.127
3510.42.8.128/2610.42.8.129 – 10.42.8.19010.42.8.191
3610.42.8.192/2610.42.8.193 – 10.42.8.25410.42.8.255
3710.42.9.0/2610.42.9.1 – 10.42.9.6210.42.9.63
3810.42.9.64/2610.42.9.65 – 10.42.9.12610.42.9.127
3910.42.9.128/2610.42.9.129 – 10.42.9.19010.42.9.191
4010.42.9.192/2610.42.9.193 – 10.42.9.25410.42.9.255
4110.42.10.0/2610.42.10.1 – 10.42.10.6210.42.10.63
4210.42.10.64/2610.42.10.65 – 10.42.10.12610.42.10.127
4310.42.10.128/2610.42.10.129 – 10.42.10.19010.42.10.191
4410.42.10.192/2610.42.10.193 – 10.42.10.25410.42.10.255
4510.42.11.0/2610.42.11.1 – 10.42.11.6210.42.11.63
4610.42.11.64/2610.42.11.65 – 10.42.11.12610.42.11.127
4710.42.11.128/2610.42.11.129 – 10.42.11.19010.42.11.191
4810.42.11.192/2610.42.11.193 – 10.42.11.25410.42.11.255
4910.42.12.0/2610.42.12.1 – 10.42.12.6210.42.12.63
5010.42.12.64/2610.42.12.65 – 10.42.12.12610.42.12.127
5110.42.12.128/2610.42.12.129 – 10.42.12.19010.42.12.191
5210.42.12.192/2610.42.12.193 – 10.42.12.25410.42.12.255
5310.42.13.0/2610.42.13.1 – 10.42.13.6210.42.13.63
5410.42.13.64/2610.42.13.65 – 10.42.13.12610.42.13.127
5510.42.13.128/2610.42.13.129 – 10.42.13.19010.42.13.191
5610.42.13.192/2610.42.13.193 – 10.42.13.25410.42.13.255
5710.42.14.0/2610.42.14.1 – 10.42.14.6210.42.14.63
5810.42.14.64/2610.42.14.65 – 10.42.14.12610.42.14.127
5910.42.14.128/2610.42.14.129 – 10.42.14.19010.42.14.191
6010.42.14.192/2610.42.14.193 – 10.42.14.25410.42.14.255
6110.42.15.0/2610.42.15.1 – 10.42.15.6210.42.15.63
6210.42.15.64/2610.42.15.65 – 10.42.15.12610.42.15.127
6310.42.15.128/2610.42.15.129 – 10.42.15.19010.42.15.191
6410.42.15.192/2610.42.15.193 – 10.42.15.25410.42.15.255
6510.42.16.0/2610.42.16.1 – 10.42.16.6210.42.16.63
6610.42.16.64/2610.42.16.65 – 10.42.16.12610.42.16.127
6710.42.16.128/2610.42.16.129 – 10.42.16.19010.42.16.191
6810.42.16.192/2610.42.16.193 – 10.42.16.25410.42.16.255
6910.42.17.0/2610.42.17.1 – 10.42.17.6210.42.17.63
7010.42.17.64/2610.42.17.65 – 10.42.17.12610.42.17.127
7110.42.17.128/2610.42.17.129 – 10.42.17.19010.42.17.191
7210.42.17.192/2610.42.17.193 – 10.42.17.25410.42.17.255
7310.42.18.0/2610.42.18.1 – 10.42.18.6210.42.18.63
7410.42.18.64/2610.42.18.65 – 10.42.18.12610.42.18.127
7510.42.18.128/2610.42.18.129 – 10.42.18.19010.42.18.191
7610.42.18.192/2610.42.18.193 – 10.42.18.25410.42.18.255
7710.42.19.0/2610.42.19.1 – 10.42.19.6210.42.19.63
7810.42.19.64/2610.42.19.65 – 10.42.19.12610.42.19.127
7910.42.19.128/2610.42.19.129 – 10.42.19.19010.42.19.191
8010.42.19.192/2610.42.19.193 – 10.42.19.25410.42.19.255
8110.42.20.0/2610.42.20.1 – 10.42.20.6210.42.20.63
8210.42.20.64/2610.42.20.65 – 10.42.20.12610.42.20.127
8310.42.20.128/2610.42.20.129 – 10.42.20.19010.42.20.191
8410.42.20.192/2610.42.20.193 – 10.42.20.25410.42.20.255
8510.42.21.0/2610.42.21.1 – 10.42.21.6210.42.21.63
8610.42.21.64/2610.42.21.65 – 10.42.21.12610.42.21.127
8710.42.21.128/2610.42.21.129 – 10.42.21.19010.42.21.191
8810.42.21.192/2610.42.21.193 – 10.42.21.25410.42.21.255
8910.42.22.0/2610.42.22.1 – 10.42.22.6210.42.22.63
9010.42.22.64/2610.42.22.65 – 10.42.22.12610.42.22.127
9110.42.22.128/2610.42.22.129 – 10.42.22.19010.42.22.191
9210.42.22.192/2610.42.22.193 – 10.42.22.25410.42.22.255
9310.42.23.0/2610.42.23.1 – 10.42.23.6210.42.23.63
9410.42.23.64/2610.42.23.65 – 10.42.23.12610.42.23.127
9510.42.23.128/2610.42.23.129 – 10.42.23.19010.42.23.191
9610.42.23.192/2610.42.23.193 – 10.42.23.25410.42.23.255
9710.42.24.0/2610.42.24.1 – 10.42.24.6210.42.24.63
9810.42.24.64/2610.42.24.65 – 10.42.24.12610.42.24.127
9910.42.24.128/2610.42.24.129 – 10.42.24.19010.42.24.191
10010.42.24.192/2610.42.24.193 – 10.42.24.25410.42.24.255
10110.42.25.0/2610.42.25.1 – 10.42.25.6210.42.25.63
10210.42.25.64/2610.42.25.65 – 10.42.25.12610.42.25.127
10310.42.25.128/2610.42.25.129 – 10.42.25.19010.42.25.191
10410.42.25.192/2610.42.25.193 – 10.42.25.25410.42.25.255
10510.42.26.0/2610.42.26.1 – 10.42.26.6210.42.26.63
10610.42.26.64/2610.42.26.65 – 10.42.26.12610.42.26.127
10710.42.26.128/2610.42.26.129 – 10.42.26.19010.42.26.191
10810.42.26.192/2610.42.26.193 – 10.42.26.25410.42.26.255
10910.42.27.0/2610.42.27.1 – 10.42.27.6210.42.27.63
11010.42.27.64/2610.42.27.65 – 10.42.27.12610.42.27.127
11110.42.27.128/2610.42.27.129 – 10.42.27.19010.42.27.191
11210.42.27.192/2610.42.27.193 – 10.42.27.25410.42.27.255
11310.42.28.0/2610.42.28.1 – 10.42.28.6210.42.28.63
11410.42.28.64/2610.42.28.65 – 10.42.28.12610.42.28.127
11510.42.28.128/2610.42.28.129 – 10.42.28.19010.42.28.191
11610.42.28.192/2610.42.28.193 – 10.42.28.25410.42.28.255
11710.42.29.0/2610.42.29.1 – 10.42.29.6210.42.29.63
11810.42.29.64/2610.42.29.65 – 10.42.29.12610.42.29.127
11910.42.29.128/2610.42.29.129 – 10.42.29.19010.42.29.191
12010.42.29.192/2610.42.29.193 – 10.42.29.25410.42.29.255
12110.42.30.0/2610.42.30.1 – 10.42.30.6210.42.30.63
12210.42.30.64/2610.42.30.65 – 10.42.30.12610.42.30.127
12310.42.30.128/2610.42.30.129 – 10.42.30.19010.42.30.191
12410.42.30.192/2610.42.30.193 – 10.42.30.25410.42.30.255
12510.42.31.0/2610.42.31.1 – 10.42.31.6210.42.31.63
12610.42.31.64/2610.42.31.65 – 10.42.31.12610.42.31.127
12710.42.31.128/2610.42.31.129 – 10.42.31.19010.42.31.191
12810.42.31.192/2610.42.31.193 – 10.42.31.25410.42.31.255
12910.42.32.0/2610.42.32.1 – 10.42.32.6210.42.32.63
13010.42.32.64/2610.42.32.65 – 10.42.32.12610.42.32.127
13110.42.32.128/2610.42.32.129 – 10.42.32.19010.42.32.191
13210.42.32.192/2610.42.32.193 – 10.42.32.25410.42.32.255
13310.42.33.0/2610.42.33.1 – 10.42.33.6210.42.33.63
13410.42.33.64/2610.42.33.65 – 10.42.33.12610.42.33.127
13510.42.33.128/2610.42.33.129 – 10.42.33.19010.42.33.191
13610.42.33.192/2610.42.33.193 – 10.42.33.25410.42.33.255
13710.42.34.0/2610.42.34.1 – 10.42.34.6210.42.34.63
13810.42.34.64/2610.42.34.65 – 10.42.34.12610.42.34.127
13910.42.34.128/2610.42.34.129 – 10.42.34.19010.42.34.191
14010.42.34.192/2610.42.34.193 – 10.42.34.25410.42.34.255
14110.42.35.0/2610.42.35.1 – 10.42.35.6210.42.35.63
14210.42.35.64/2610.42.35.65 – 10.42.35.12610.42.35.127
14310.42.35.128/2610.42.35.129 – 10.42.35.19010.42.35.191
14410.42.35.192/2610.42.35.193 – 10.42.35.25410.42.35.255
14510.42.36.0/2610.42.36.1 – 10.42.36.6210.42.36.63
14610.42.36.64/2610.42.36.65 – 10.42.36.12610.42.36.127
14710.42.36.128/2610.42.36.129 – 10.42.36.19010.42.36.191
14810.42.36.192/2610.42.36.193 – 10.42.36.25410.42.36.255
14910.42.37.0/2610.42.37.1 – 10.42.37.6210.42.37.63
15010.42.37.64/2610.42.37.65 – 10.42.37.12610.42.37.127
15110.42.37.128/2610.42.37.129 – 10.42.37.19010.42.37.191
15210.42.37.192/2610.42.37.193 – 10.42.37.25410.42.37.255
15310.42.38.0/2610.42.38.1 – 10.42.38.6210.42.38.63
15410.42.38.64/2610.42.38.65 – 10.42.38.12610.42.38.127
15510.42.38.128/2610.42.38.129 – 10.42.38.19010.42.38.191
15610.42.38.192/2610.42.38.193 – 10.42.38.25410.42.38.255
15710.42.39.0/2610.42.39.1 – 10.42.39.6210.42.39.63
15810.42.39.64/2610.42.39.65 – 10.42.39.12610.42.39.127
15910.42.39.128/2610.42.39.129 – 10.42.39.19010.42.39.191
16010.42.39.192/2610.42.39.193 – 10.42.39.25410.42.39.255
16110.42.40.0/2610.42.40.1 – 10.42.40.6210.42.40.63
16210.42.40.64/2610.42.40.65 – 10.42.40.12610.42.40.127
16310.42.40.128/2610.42.40.129 – 10.42.40.19010.42.40.191
16410.42.40.192/2610.42.40.193 – 10.42.40.25410.42.40.255
16510.42.41.0/2610.42.41.1 – 10.42.41.6210.42.41.63
16610.42.41.64/2610.42.41.65 – 10.42.41.12610.42.41.127
16710.42.41.128/2610.42.41.129 – 10.42.41.19010.42.41.191
16810.42.41.192/2610.42.41.193 – 10.42.41.25410.42.41.255
16910.42.42.0/2610.42.42.1 – 10.42.42.6210.42.42.63
17010.42.42.64/2610.42.42.65 – 10.42.42.12610.42.42.127
17110.42.42.128/2610.42.42.129 – 10.42.42.19010.42.42.191
17210.42.42.192/2610.42.42.193 – 10.42.42.25410.42.42.255
17310.42.43.0/2610.42.43.1 – 10.42.43.6210.42.43.63
17410.42.43.64/2610.42.43.65 – 10.42.43.12610.42.43.127
17510.42.43.128/2610.42.43.129 – 10.42.43.19010.42.43.191
17610.42.43.192/2610.42.43.193 – 10.42.43.25410.42.43.255
17710.42.44.0/2610.42.44.1 – 10.42.44.6210.42.44.63
17810.42.44.64/2610.42.44.65 – 10.42.44.12610.42.44.127
17910.42.44.128/2610.42.44.129 – 10.42.44.19010.42.44.191
18010.42.44.192/2610.42.44.193 – 10.42.44.25410.42.44.255
18110.42.45.0/2610.42.45.1 – 10.42.45.6210.42.45.63
18210.42.45.64/2610.42.45.65 – 10.42.45.12610.42.45.127
18310.42.45.128/2610.42.45.129 – 10.42.45.19010.42.45.191
18410.42.45.192/2610.42.45.193 – 10.42.45.25410.42.45.255
18510.42.46.0/2610.42.46.1 – 10.42.46.6210.42.46.63
18610.42.46.64/2610.42.46.65 – 10.42.46.12610.42.46.127
18710.42.46.128/2610.42.46.129 – 10.42.46.19010.42.46.191
18810.42.46.192/2610.42.46.193 – 10.42.46.25410.42.46.255
18910.42.47.0/2610.42.47.1 – 10.42.47.6210.42.47.63
19010.42.47.64/2610.42.47.65 – 10.42.47.12610.42.47.127
19110.42.47.128/2610.42.47.129 – 10.42.47.19010.42.47.191
19210.42.47.192/2610.42.47.193 – 10.42.47.25410.42.47.255
19310.42.48.0/2610.42.48.1 – 10.42.48.6210.42.48.63
19410.42.48.64/2610.42.48.65 – 10.42.48.12610.42.48.127
19510.42.48.128/2610.42.48.129 – 10.42.48.19010.42.48.191
19610.42.48.192/2610.42.48.193 – 10.42.48.25410.42.48.255
19710.42.49.0/2610.42.49.1 – 10.42.49.6210.42.49.63
19810.42.49.64/2610.42.49.65 – 10.42.49.12610.42.49.127
19910.42.49.128/2610.42.49.129 – 10.42.49.19010.42.49.191
20010.42.49.192/2610.42.49.193 – 10.42.49.25410.42.49.255
20110.42.50.0/2610.42.50.1 – 10.42.50.6210.42.50.63
20210.42.50.64/2610.42.50.65 – 10.42.50.12610.42.50.127
20310.42.50.128/2610.42.50.129 – 10.42.50.19010.42.50.191
20410.42.50.192/2610.42.50.193 – 10.42.50.25410.42.50.255
20510.42.51.0/2610.42.51.1 – 10.42.51.6210.42.51.63
20610.42.51.64/2610.42.51.65 – 10.42.51.12610.42.51.127
20710.42.51.128/2610.42.51.129 – 10.42.51.19010.42.51.191
20810.42.51.192/2610.42.51.193 – 10.42.51.25410.42.51.255
20910.42.52.0/2610.42.52.1 – 10.42.52.6210.42.52.63
21010.42.52.64/2610.42.52.65 – 10.42.52.12610.42.52.127
21110.42.52.128/2610.42.52.129 – 10.42.52.19010.42.52.191
21210.42.52.192/2610.42.52.193 – 10.42.52.25410.42.52.255
21310.42.53.0/2610.42.53.1 – 10.42.53.6210.42.53.63
21410.42.53.64/2610.42.53.65 – 10.42.53.12610.42.53.127
21510.42.53.128/2610.42.53.129 – 10.42.53.19010.42.53.191
21610.42.53.192/2610.42.53.193 – 10.42.53.25410.42.53.255
21710.42.54.0/2610.42.54.1 – 10.42.54.6210.42.54.63
21810.42.54.64/2610.42.54.65 – 10.42.54.12610.42.54.127
21910.42.54.128/2610.42.54.129 – 10.42.54.19010.42.54.191
22010.42.54.192/2610.42.54.193 – 10.42.54.25410.42.54.255
22110.42.55.0/2610.42.55.1 – 10.42.55.6210.42.55.63
22210.42.55.64/2610.42.55.65 – 10.42.55.12610.42.55.127
22310.42.55.128/2610.42.55.129 – 10.42.55.19010.42.55.191
22410.42.55.192/2610.42.55.193 – 10.42.55.25410.42.55.255
22510.42.56.0/2610.42.56.1 – 10.42.56.6210.42.56.63
22610.42.56.64/2610.42.56.65 – 10.42.56.12610.42.56.127
22710.42.56.128/2610.42.56.129 – 10.42.56.19010.42.56.191
22810.42.56.192/2610.42.56.193 – 10.42.56.25410.42.56.255
22910.42.57.0/2610.42.57.1 – 10.42.57.6210.42.57.63
23010.42.57.64/2610.42.57.65 – 10.42.57.12610.42.57.127
23110.42.57.128/2610.42.57.129 – 10.42.57.19010.42.57.191
23210.42.57.192/2610.42.57.193 – 10.42.57.25410.42.57.255
23310.42.58.0/2610.42.58.1 – 10.42.58.6210.42.58.63
23410.42.58.64/2610.42.58.65 – 10.42.58.12610.42.58.127
23510.42.58.128/2610.42.58.129 – 10.42.58.19010.42.58.191
23610.42.58.192/2610.42.58.193 – 10.42.58.25410.42.58.255
23710.42.59.0/2610.42.59.1 – 10.42.59.6210.42.59.63
23810.42.59.64/2610.42.59.65 – 10.42.59.12610.42.59.127
23910.42.59.128/2610.42.59.129 – 10.42.59.19010.42.59.191
24010.42.59.192/2610.42.59.193 – 10.42.59.25410.42.59.255
24110.42.60.0/2610.42.60.1 – 10.42.60.6210.42.60.63
24210.42.60.64/2610.42.60.65 – 10.42.60.12610.42.60.127
24310.42.60.128/2610.42.60.129 – 10.42.60.19010.42.60.191
24410.42.60.192/2610.42.60.193 – 10.42.60.25410.42.60.255
24510.42.61.0/2610.42.61.1 – 10.42.61.6210.42.61.63
24610.42.61.64/2610.42.61.65 – 10.42.61.12610.42.61.127
24710.42.61.128/2610.42.61.129 – 10.42.61.19010.42.61.191
24810.42.61.192/2610.42.61.193 – 10.42.61.25410.42.61.255
24910.42.62.0/2610.42.62.1 – 10.42.62.6210.42.62.63
25010.42.62.64/2610.42.62.65 – 10.42.62.12610.42.62.127
25110.42.62.128/2610.42.62.129 – 10.42.62.19010.42.62.191
25210.42.62.192/2610.42.62.193 – 10.42.62.25410.42.62.255
25310.42.63.0/2610.42.63.1 – 10.42.63.6210.42.63.63
25410.42.63.64/2610.42.63.65 – 10.42.63.12610.42.63.127
25510.42.63.128/2610.42.63.129 – 10.42.63.19010.42.63.191
25610.42.63.192/2610.42.63.193 – 10.42.63.25410.42.63.255

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 /15
/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-
/15255.254.0.0131,072131,0701
/16255.255.0.065,53665,5342 split →
/17255.255.128.032,76832,7664 split →
/18255.255.192.016,38416,3828 split →
/19255.255.224.08,1928,19016 split →
/20255.255.240.04,0964,09432 split →
/21255.255.248.02,0482,04664 split →
/22255.255.252.01,0241,022128 split →
/23255.255.254.0512510256 split →
/24255.255.255.0256254512 split →
/25255.255.255.1281281261,024 split →
/26255.255.255.19264622,048 split →
/27255.255.255.22432304,096 split →
/28255.255.255.24016148,192 split →
/29255.255.255.2488616,384 split →
/30255.255.255.2524232,768 split →
/31255.255.255.2542265,536 split →
/32255.255.255.25511131,072 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 →