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 /25 · 512 subnets

close ×
#networkhost rangebroadcast
110.42.0.0/2510.42.0.1 – 10.42.0.12610.42.0.127
210.42.0.128/2510.42.0.129 – 10.42.0.25410.42.0.255
310.42.1.0/2510.42.1.1 – 10.42.1.12610.42.1.127
410.42.1.128/2510.42.1.129 – 10.42.1.25410.42.1.255
510.42.2.0/2510.42.2.1 – 10.42.2.12610.42.2.127
610.42.2.128/2510.42.2.129 – 10.42.2.25410.42.2.255
710.42.3.0/2510.42.3.1 – 10.42.3.12610.42.3.127
810.42.3.128/2510.42.3.129 – 10.42.3.25410.42.3.255
910.42.4.0/2510.42.4.1 – 10.42.4.12610.42.4.127
1010.42.4.128/2510.42.4.129 – 10.42.4.25410.42.4.255
1110.42.5.0/2510.42.5.1 – 10.42.5.12610.42.5.127
1210.42.5.128/2510.42.5.129 – 10.42.5.25410.42.5.255
1310.42.6.0/2510.42.6.1 – 10.42.6.12610.42.6.127
1410.42.6.128/2510.42.6.129 – 10.42.6.25410.42.6.255
1510.42.7.0/2510.42.7.1 – 10.42.7.12610.42.7.127
1610.42.7.128/2510.42.7.129 – 10.42.7.25410.42.7.255
1710.42.8.0/2510.42.8.1 – 10.42.8.12610.42.8.127
1810.42.8.128/2510.42.8.129 – 10.42.8.25410.42.8.255
1910.42.9.0/2510.42.9.1 – 10.42.9.12610.42.9.127
2010.42.9.128/2510.42.9.129 – 10.42.9.25410.42.9.255
2110.42.10.0/2510.42.10.1 – 10.42.10.12610.42.10.127
2210.42.10.128/2510.42.10.129 – 10.42.10.25410.42.10.255
2310.42.11.0/2510.42.11.1 – 10.42.11.12610.42.11.127
2410.42.11.128/2510.42.11.129 – 10.42.11.25410.42.11.255
2510.42.12.0/2510.42.12.1 – 10.42.12.12610.42.12.127
2610.42.12.128/2510.42.12.129 – 10.42.12.25410.42.12.255
2710.42.13.0/2510.42.13.1 – 10.42.13.12610.42.13.127
2810.42.13.128/2510.42.13.129 – 10.42.13.25410.42.13.255
2910.42.14.0/2510.42.14.1 – 10.42.14.12610.42.14.127
3010.42.14.128/2510.42.14.129 – 10.42.14.25410.42.14.255
3110.42.15.0/2510.42.15.1 – 10.42.15.12610.42.15.127
3210.42.15.128/2510.42.15.129 – 10.42.15.25410.42.15.255
3310.42.16.0/2510.42.16.1 – 10.42.16.12610.42.16.127
3410.42.16.128/2510.42.16.129 – 10.42.16.25410.42.16.255
3510.42.17.0/2510.42.17.1 – 10.42.17.12610.42.17.127
3610.42.17.128/2510.42.17.129 – 10.42.17.25410.42.17.255
3710.42.18.0/2510.42.18.1 – 10.42.18.12610.42.18.127
3810.42.18.128/2510.42.18.129 – 10.42.18.25410.42.18.255
3910.42.19.0/2510.42.19.1 – 10.42.19.12610.42.19.127
4010.42.19.128/2510.42.19.129 – 10.42.19.25410.42.19.255
4110.42.20.0/2510.42.20.1 – 10.42.20.12610.42.20.127
4210.42.20.128/2510.42.20.129 – 10.42.20.25410.42.20.255
4310.42.21.0/2510.42.21.1 – 10.42.21.12610.42.21.127
4410.42.21.128/2510.42.21.129 – 10.42.21.25410.42.21.255
4510.42.22.0/2510.42.22.1 – 10.42.22.12610.42.22.127
4610.42.22.128/2510.42.22.129 – 10.42.22.25410.42.22.255
4710.42.23.0/2510.42.23.1 – 10.42.23.12610.42.23.127
4810.42.23.128/2510.42.23.129 – 10.42.23.25410.42.23.255
4910.42.24.0/2510.42.24.1 – 10.42.24.12610.42.24.127
5010.42.24.128/2510.42.24.129 – 10.42.24.25410.42.24.255
5110.42.25.0/2510.42.25.1 – 10.42.25.12610.42.25.127
5210.42.25.128/2510.42.25.129 – 10.42.25.25410.42.25.255
5310.42.26.0/2510.42.26.1 – 10.42.26.12610.42.26.127
5410.42.26.128/2510.42.26.129 – 10.42.26.25410.42.26.255
5510.42.27.0/2510.42.27.1 – 10.42.27.12610.42.27.127
5610.42.27.128/2510.42.27.129 – 10.42.27.25410.42.27.255
5710.42.28.0/2510.42.28.1 – 10.42.28.12610.42.28.127
5810.42.28.128/2510.42.28.129 – 10.42.28.25410.42.28.255
5910.42.29.0/2510.42.29.1 – 10.42.29.12610.42.29.127
6010.42.29.128/2510.42.29.129 – 10.42.29.25410.42.29.255
6110.42.30.0/2510.42.30.1 – 10.42.30.12610.42.30.127
6210.42.30.128/2510.42.30.129 – 10.42.30.25410.42.30.255
6310.42.31.0/2510.42.31.1 – 10.42.31.12610.42.31.127
6410.42.31.128/2510.42.31.129 – 10.42.31.25410.42.31.255
6510.42.32.0/2510.42.32.1 – 10.42.32.12610.42.32.127
6610.42.32.128/2510.42.32.129 – 10.42.32.25410.42.32.255
6710.42.33.0/2510.42.33.1 – 10.42.33.12610.42.33.127
6810.42.33.128/2510.42.33.129 – 10.42.33.25410.42.33.255
6910.42.34.0/2510.42.34.1 – 10.42.34.12610.42.34.127
7010.42.34.128/2510.42.34.129 – 10.42.34.25410.42.34.255
7110.42.35.0/2510.42.35.1 – 10.42.35.12610.42.35.127
7210.42.35.128/2510.42.35.129 – 10.42.35.25410.42.35.255
7310.42.36.0/2510.42.36.1 – 10.42.36.12610.42.36.127
7410.42.36.128/2510.42.36.129 – 10.42.36.25410.42.36.255
7510.42.37.0/2510.42.37.1 – 10.42.37.12610.42.37.127
7610.42.37.128/2510.42.37.129 – 10.42.37.25410.42.37.255
7710.42.38.0/2510.42.38.1 – 10.42.38.12610.42.38.127
7810.42.38.128/2510.42.38.129 – 10.42.38.25410.42.38.255
7910.42.39.0/2510.42.39.1 – 10.42.39.12610.42.39.127
8010.42.39.128/2510.42.39.129 – 10.42.39.25410.42.39.255
8110.42.40.0/2510.42.40.1 – 10.42.40.12610.42.40.127
8210.42.40.128/2510.42.40.129 – 10.42.40.25410.42.40.255
8310.42.41.0/2510.42.41.1 – 10.42.41.12610.42.41.127
8410.42.41.128/2510.42.41.129 – 10.42.41.25410.42.41.255
8510.42.42.0/2510.42.42.1 – 10.42.42.12610.42.42.127
8610.42.42.128/2510.42.42.129 – 10.42.42.25410.42.42.255
8710.42.43.0/2510.42.43.1 – 10.42.43.12610.42.43.127
8810.42.43.128/2510.42.43.129 – 10.42.43.25410.42.43.255
8910.42.44.0/2510.42.44.1 – 10.42.44.12610.42.44.127
9010.42.44.128/2510.42.44.129 – 10.42.44.25410.42.44.255
9110.42.45.0/2510.42.45.1 – 10.42.45.12610.42.45.127
9210.42.45.128/2510.42.45.129 – 10.42.45.25410.42.45.255
9310.42.46.0/2510.42.46.1 – 10.42.46.12610.42.46.127
9410.42.46.128/2510.42.46.129 – 10.42.46.25410.42.46.255
9510.42.47.0/2510.42.47.1 – 10.42.47.12610.42.47.127
9610.42.47.128/2510.42.47.129 – 10.42.47.25410.42.47.255
9710.42.48.0/2510.42.48.1 – 10.42.48.12610.42.48.127
9810.42.48.128/2510.42.48.129 – 10.42.48.25410.42.48.255
9910.42.49.0/2510.42.49.1 – 10.42.49.12610.42.49.127
10010.42.49.128/2510.42.49.129 – 10.42.49.25410.42.49.255
10110.42.50.0/2510.42.50.1 – 10.42.50.12610.42.50.127
10210.42.50.128/2510.42.50.129 – 10.42.50.25410.42.50.255
10310.42.51.0/2510.42.51.1 – 10.42.51.12610.42.51.127
10410.42.51.128/2510.42.51.129 – 10.42.51.25410.42.51.255
10510.42.52.0/2510.42.52.1 – 10.42.52.12610.42.52.127
10610.42.52.128/2510.42.52.129 – 10.42.52.25410.42.52.255
10710.42.53.0/2510.42.53.1 – 10.42.53.12610.42.53.127
10810.42.53.128/2510.42.53.129 – 10.42.53.25410.42.53.255
10910.42.54.0/2510.42.54.1 – 10.42.54.12610.42.54.127
11010.42.54.128/2510.42.54.129 – 10.42.54.25410.42.54.255
11110.42.55.0/2510.42.55.1 – 10.42.55.12610.42.55.127
11210.42.55.128/2510.42.55.129 – 10.42.55.25410.42.55.255
11310.42.56.0/2510.42.56.1 – 10.42.56.12610.42.56.127
11410.42.56.128/2510.42.56.129 – 10.42.56.25410.42.56.255
11510.42.57.0/2510.42.57.1 – 10.42.57.12610.42.57.127
11610.42.57.128/2510.42.57.129 – 10.42.57.25410.42.57.255
11710.42.58.0/2510.42.58.1 – 10.42.58.12610.42.58.127
11810.42.58.128/2510.42.58.129 – 10.42.58.25410.42.58.255
11910.42.59.0/2510.42.59.1 – 10.42.59.12610.42.59.127
12010.42.59.128/2510.42.59.129 – 10.42.59.25410.42.59.255
12110.42.60.0/2510.42.60.1 – 10.42.60.12610.42.60.127
12210.42.60.128/2510.42.60.129 – 10.42.60.25410.42.60.255
12310.42.61.0/2510.42.61.1 – 10.42.61.12610.42.61.127
12410.42.61.128/2510.42.61.129 – 10.42.61.25410.42.61.255
12510.42.62.0/2510.42.62.1 – 10.42.62.12610.42.62.127
12610.42.62.128/2510.42.62.129 – 10.42.62.25410.42.62.255
12710.42.63.0/2510.42.63.1 – 10.42.63.12610.42.63.127
12810.42.63.128/2510.42.63.129 – 10.42.63.25410.42.63.255
12910.42.64.0/2510.42.64.1 – 10.42.64.12610.42.64.127
13010.42.64.128/2510.42.64.129 – 10.42.64.25410.42.64.255
13110.42.65.0/2510.42.65.1 – 10.42.65.12610.42.65.127
13210.42.65.128/2510.42.65.129 – 10.42.65.25410.42.65.255
13310.42.66.0/2510.42.66.1 – 10.42.66.12610.42.66.127
13410.42.66.128/2510.42.66.129 – 10.42.66.25410.42.66.255
13510.42.67.0/2510.42.67.1 – 10.42.67.12610.42.67.127
13610.42.67.128/2510.42.67.129 – 10.42.67.25410.42.67.255
13710.42.68.0/2510.42.68.1 – 10.42.68.12610.42.68.127
13810.42.68.128/2510.42.68.129 – 10.42.68.25410.42.68.255
13910.42.69.0/2510.42.69.1 – 10.42.69.12610.42.69.127
14010.42.69.128/2510.42.69.129 – 10.42.69.25410.42.69.255
14110.42.70.0/2510.42.70.1 – 10.42.70.12610.42.70.127
14210.42.70.128/2510.42.70.129 – 10.42.70.25410.42.70.255
14310.42.71.0/2510.42.71.1 – 10.42.71.12610.42.71.127
14410.42.71.128/2510.42.71.129 – 10.42.71.25410.42.71.255
14510.42.72.0/2510.42.72.1 – 10.42.72.12610.42.72.127
14610.42.72.128/2510.42.72.129 – 10.42.72.25410.42.72.255
14710.42.73.0/2510.42.73.1 – 10.42.73.12610.42.73.127
14810.42.73.128/2510.42.73.129 – 10.42.73.25410.42.73.255
14910.42.74.0/2510.42.74.1 – 10.42.74.12610.42.74.127
15010.42.74.128/2510.42.74.129 – 10.42.74.25410.42.74.255
15110.42.75.0/2510.42.75.1 – 10.42.75.12610.42.75.127
15210.42.75.128/2510.42.75.129 – 10.42.75.25410.42.75.255
15310.42.76.0/2510.42.76.1 – 10.42.76.12610.42.76.127
15410.42.76.128/2510.42.76.129 – 10.42.76.25410.42.76.255
15510.42.77.0/2510.42.77.1 – 10.42.77.12610.42.77.127
15610.42.77.128/2510.42.77.129 – 10.42.77.25410.42.77.255
15710.42.78.0/2510.42.78.1 – 10.42.78.12610.42.78.127
15810.42.78.128/2510.42.78.129 – 10.42.78.25410.42.78.255
15910.42.79.0/2510.42.79.1 – 10.42.79.12610.42.79.127
16010.42.79.128/2510.42.79.129 – 10.42.79.25410.42.79.255
16110.42.80.0/2510.42.80.1 – 10.42.80.12610.42.80.127
16210.42.80.128/2510.42.80.129 – 10.42.80.25410.42.80.255
16310.42.81.0/2510.42.81.1 – 10.42.81.12610.42.81.127
16410.42.81.128/2510.42.81.129 – 10.42.81.25410.42.81.255
16510.42.82.0/2510.42.82.1 – 10.42.82.12610.42.82.127
16610.42.82.128/2510.42.82.129 – 10.42.82.25410.42.82.255
16710.42.83.0/2510.42.83.1 – 10.42.83.12610.42.83.127
16810.42.83.128/2510.42.83.129 – 10.42.83.25410.42.83.255
16910.42.84.0/2510.42.84.1 – 10.42.84.12610.42.84.127
17010.42.84.128/2510.42.84.129 – 10.42.84.25410.42.84.255
17110.42.85.0/2510.42.85.1 – 10.42.85.12610.42.85.127
17210.42.85.128/2510.42.85.129 – 10.42.85.25410.42.85.255
17310.42.86.0/2510.42.86.1 – 10.42.86.12610.42.86.127
17410.42.86.128/2510.42.86.129 – 10.42.86.25410.42.86.255
17510.42.87.0/2510.42.87.1 – 10.42.87.12610.42.87.127
17610.42.87.128/2510.42.87.129 – 10.42.87.25410.42.87.255
17710.42.88.0/2510.42.88.1 – 10.42.88.12610.42.88.127
17810.42.88.128/2510.42.88.129 – 10.42.88.25410.42.88.255
17910.42.89.0/2510.42.89.1 – 10.42.89.12610.42.89.127
18010.42.89.128/2510.42.89.129 – 10.42.89.25410.42.89.255
18110.42.90.0/2510.42.90.1 – 10.42.90.12610.42.90.127
18210.42.90.128/2510.42.90.129 – 10.42.90.25410.42.90.255
18310.42.91.0/2510.42.91.1 – 10.42.91.12610.42.91.127
18410.42.91.128/2510.42.91.129 – 10.42.91.25410.42.91.255
18510.42.92.0/2510.42.92.1 – 10.42.92.12610.42.92.127
18610.42.92.128/2510.42.92.129 – 10.42.92.25410.42.92.255
18710.42.93.0/2510.42.93.1 – 10.42.93.12610.42.93.127
18810.42.93.128/2510.42.93.129 – 10.42.93.25410.42.93.255
18910.42.94.0/2510.42.94.1 – 10.42.94.12610.42.94.127
19010.42.94.128/2510.42.94.129 – 10.42.94.25410.42.94.255
19110.42.95.0/2510.42.95.1 – 10.42.95.12610.42.95.127
19210.42.95.128/2510.42.95.129 – 10.42.95.25410.42.95.255
19310.42.96.0/2510.42.96.1 – 10.42.96.12610.42.96.127
19410.42.96.128/2510.42.96.129 – 10.42.96.25410.42.96.255
19510.42.97.0/2510.42.97.1 – 10.42.97.12610.42.97.127
19610.42.97.128/2510.42.97.129 – 10.42.97.25410.42.97.255
19710.42.98.0/2510.42.98.1 – 10.42.98.12610.42.98.127
19810.42.98.128/2510.42.98.129 – 10.42.98.25410.42.98.255
19910.42.99.0/2510.42.99.1 – 10.42.99.12610.42.99.127
20010.42.99.128/2510.42.99.129 – 10.42.99.25410.42.99.255
20110.42.100.0/2510.42.100.1 – 10.42.100.12610.42.100.127
20210.42.100.128/2510.42.100.129 – 10.42.100.25410.42.100.255
20310.42.101.0/2510.42.101.1 – 10.42.101.12610.42.101.127
20410.42.101.128/2510.42.101.129 – 10.42.101.25410.42.101.255
20510.42.102.0/2510.42.102.1 – 10.42.102.12610.42.102.127
20610.42.102.128/2510.42.102.129 – 10.42.102.25410.42.102.255
20710.42.103.0/2510.42.103.1 – 10.42.103.12610.42.103.127
20810.42.103.128/2510.42.103.129 – 10.42.103.25410.42.103.255
20910.42.104.0/2510.42.104.1 – 10.42.104.12610.42.104.127
21010.42.104.128/2510.42.104.129 – 10.42.104.25410.42.104.255
21110.42.105.0/2510.42.105.1 – 10.42.105.12610.42.105.127
21210.42.105.128/2510.42.105.129 – 10.42.105.25410.42.105.255
21310.42.106.0/2510.42.106.1 – 10.42.106.12610.42.106.127
21410.42.106.128/2510.42.106.129 – 10.42.106.25410.42.106.255
21510.42.107.0/2510.42.107.1 – 10.42.107.12610.42.107.127
21610.42.107.128/2510.42.107.129 – 10.42.107.25410.42.107.255
21710.42.108.0/2510.42.108.1 – 10.42.108.12610.42.108.127
21810.42.108.128/2510.42.108.129 – 10.42.108.25410.42.108.255
21910.42.109.0/2510.42.109.1 – 10.42.109.12610.42.109.127
22010.42.109.128/2510.42.109.129 – 10.42.109.25410.42.109.255
22110.42.110.0/2510.42.110.1 – 10.42.110.12610.42.110.127
22210.42.110.128/2510.42.110.129 – 10.42.110.25410.42.110.255
22310.42.111.0/2510.42.111.1 – 10.42.111.12610.42.111.127
22410.42.111.128/2510.42.111.129 – 10.42.111.25410.42.111.255
22510.42.112.0/2510.42.112.1 – 10.42.112.12610.42.112.127
22610.42.112.128/2510.42.112.129 – 10.42.112.25410.42.112.255
22710.42.113.0/2510.42.113.1 – 10.42.113.12610.42.113.127
22810.42.113.128/2510.42.113.129 – 10.42.113.25410.42.113.255
22910.42.114.0/2510.42.114.1 – 10.42.114.12610.42.114.127
23010.42.114.128/2510.42.114.129 – 10.42.114.25410.42.114.255
23110.42.115.0/2510.42.115.1 – 10.42.115.12610.42.115.127
23210.42.115.128/2510.42.115.129 – 10.42.115.25410.42.115.255
23310.42.116.0/2510.42.116.1 – 10.42.116.12610.42.116.127
23410.42.116.128/2510.42.116.129 – 10.42.116.25410.42.116.255
23510.42.117.0/2510.42.117.1 – 10.42.117.12610.42.117.127
23610.42.117.128/2510.42.117.129 – 10.42.117.25410.42.117.255
23710.42.118.0/2510.42.118.1 – 10.42.118.12610.42.118.127
23810.42.118.128/2510.42.118.129 – 10.42.118.25410.42.118.255
23910.42.119.0/2510.42.119.1 – 10.42.119.12610.42.119.127
24010.42.119.128/2510.42.119.129 – 10.42.119.25410.42.119.255
24110.42.120.0/2510.42.120.1 – 10.42.120.12610.42.120.127
24210.42.120.128/2510.42.120.129 – 10.42.120.25410.42.120.255
24310.42.121.0/2510.42.121.1 – 10.42.121.12610.42.121.127
24410.42.121.128/2510.42.121.129 – 10.42.121.25410.42.121.255
24510.42.122.0/2510.42.122.1 – 10.42.122.12610.42.122.127
24610.42.122.128/2510.42.122.129 – 10.42.122.25410.42.122.255
24710.42.123.0/2510.42.123.1 – 10.42.123.12610.42.123.127
24810.42.123.128/2510.42.123.129 – 10.42.123.25410.42.123.255
24910.42.124.0/2510.42.124.1 – 10.42.124.12610.42.124.127
25010.42.124.128/2510.42.124.129 – 10.42.124.25410.42.124.255
25110.42.125.0/2510.42.125.1 – 10.42.125.12610.42.125.127
25210.42.125.128/2510.42.125.129 – 10.42.125.25410.42.125.255
25310.42.126.0/2510.42.126.1 – 10.42.126.12610.42.126.127
25410.42.126.128/2510.42.126.129 – 10.42.126.25410.42.126.255
25510.42.127.0/2510.42.127.1 – 10.42.127.12610.42.127.127
25610.42.127.128/2510.42.127.129 – 10.42.127.25410.42.127.255

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 /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 →