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)10.20.0.0/16
network10.20.0.0/16
broadcast10.20.255.255
first host10.20.0.1
last host10.20.255.254
subnet mask255.255.0.0
wildcard0.0.255.255
addresses65,536
usable hosts65,534
classA
ipcalc 10.20.0.0/16
address00001010.00010100.00000000.00000000
subnet mask11111111.11111111.00000000.00000000
network00001010.00010100.00000000.00000000
broadcast00001010.00010100.11111111.11111111
green = network part, grey = host part
hex0x0a140000
decimal169082880
reverse dns0.0.20.10.in-addr.arpa
ipv4-mapped::ffff:a14:0

/16 split into /25 · 512 subnets

close ×
#networkhost rangebroadcast
110.20.0.0/2510.20.0.1 – 10.20.0.12610.20.0.127
210.20.0.128/2510.20.0.129 – 10.20.0.25410.20.0.255
310.20.1.0/2510.20.1.1 – 10.20.1.12610.20.1.127
410.20.1.128/2510.20.1.129 – 10.20.1.25410.20.1.255
510.20.2.0/2510.20.2.1 – 10.20.2.12610.20.2.127
610.20.2.128/2510.20.2.129 – 10.20.2.25410.20.2.255
710.20.3.0/2510.20.3.1 – 10.20.3.12610.20.3.127
810.20.3.128/2510.20.3.129 – 10.20.3.25410.20.3.255
910.20.4.0/2510.20.4.1 – 10.20.4.12610.20.4.127
1010.20.4.128/2510.20.4.129 – 10.20.4.25410.20.4.255
1110.20.5.0/2510.20.5.1 – 10.20.5.12610.20.5.127
1210.20.5.128/2510.20.5.129 – 10.20.5.25410.20.5.255
1310.20.6.0/2510.20.6.1 – 10.20.6.12610.20.6.127
1410.20.6.128/2510.20.6.129 – 10.20.6.25410.20.6.255
1510.20.7.0/2510.20.7.1 – 10.20.7.12610.20.7.127
1610.20.7.128/2510.20.7.129 – 10.20.7.25410.20.7.255
1710.20.8.0/2510.20.8.1 – 10.20.8.12610.20.8.127
1810.20.8.128/2510.20.8.129 – 10.20.8.25410.20.8.255
1910.20.9.0/2510.20.9.1 – 10.20.9.12610.20.9.127
2010.20.9.128/2510.20.9.129 – 10.20.9.25410.20.9.255
2110.20.10.0/2510.20.10.1 – 10.20.10.12610.20.10.127
2210.20.10.128/2510.20.10.129 – 10.20.10.25410.20.10.255
2310.20.11.0/2510.20.11.1 – 10.20.11.12610.20.11.127
2410.20.11.128/2510.20.11.129 – 10.20.11.25410.20.11.255
2510.20.12.0/2510.20.12.1 – 10.20.12.12610.20.12.127
2610.20.12.128/2510.20.12.129 – 10.20.12.25410.20.12.255
2710.20.13.0/2510.20.13.1 – 10.20.13.12610.20.13.127
2810.20.13.128/2510.20.13.129 – 10.20.13.25410.20.13.255
2910.20.14.0/2510.20.14.1 – 10.20.14.12610.20.14.127
3010.20.14.128/2510.20.14.129 – 10.20.14.25410.20.14.255
3110.20.15.0/2510.20.15.1 – 10.20.15.12610.20.15.127
3210.20.15.128/2510.20.15.129 – 10.20.15.25410.20.15.255
3310.20.16.0/2510.20.16.1 – 10.20.16.12610.20.16.127
3410.20.16.128/2510.20.16.129 – 10.20.16.25410.20.16.255
3510.20.17.0/2510.20.17.1 – 10.20.17.12610.20.17.127
3610.20.17.128/2510.20.17.129 – 10.20.17.25410.20.17.255
3710.20.18.0/2510.20.18.1 – 10.20.18.12610.20.18.127
3810.20.18.128/2510.20.18.129 – 10.20.18.25410.20.18.255
3910.20.19.0/2510.20.19.1 – 10.20.19.12610.20.19.127
4010.20.19.128/2510.20.19.129 – 10.20.19.25410.20.19.255
4110.20.20.0/2510.20.20.1 – 10.20.20.12610.20.20.127
4210.20.20.128/2510.20.20.129 – 10.20.20.25410.20.20.255
4310.20.21.0/2510.20.21.1 – 10.20.21.12610.20.21.127
4410.20.21.128/2510.20.21.129 – 10.20.21.25410.20.21.255
4510.20.22.0/2510.20.22.1 – 10.20.22.12610.20.22.127
4610.20.22.128/2510.20.22.129 – 10.20.22.25410.20.22.255
4710.20.23.0/2510.20.23.1 – 10.20.23.12610.20.23.127
4810.20.23.128/2510.20.23.129 – 10.20.23.25410.20.23.255
4910.20.24.0/2510.20.24.1 – 10.20.24.12610.20.24.127
5010.20.24.128/2510.20.24.129 – 10.20.24.25410.20.24.255
5110.20.25.0/2510.20.25.1 – 10.20.25.12610.20.25.127
5210.20.25.128/2510.20.25.129 – 10.20.25.25410.20.25.255
5310.20.26.0/2510.20.26.1 – 10.20.26.12610.20.26.127
5410.20.26.128/2510.20.26.129 – 10.20.26.25410.20.26.255
5510.20.27.0/2510.20.27.1 – 10.20.27.12610.20.27.127
5610.20.27.128/2510.20.27.129 – 10.20.27.25410.20.27.255
5710.20.28.0/2510.20.28.1 – 10.20.28.12610.20.28.127
5810.20.28.128/2510.20.28.129 – 10.20.28.25410.20.28.255
5910.20.29.0/2510.20.29.1 – 10.20.29.12610.20.29.127
6010.20.29.128/2510.20.29.129 – 10.20.29.25410.20.29.255
6110.20.30.0/2510.20.30.1 – 10.20.30.12610.20.30.127
6210.20.30.128/2510.20.30.129 – 10.20.30.25410.20.30.255
6310.20.31.0/2510.20.31.1 – 10.20.31.12610.20.31.127
6410.20.31.128/2510.20.31.129 – 10.20.31.25410.20.31.255
6510.20.32.0/2510.20.32.1 – 10.20.32.12610.20.32.127
6610.20.32.128/2510.20.32.129 – 10.20.32.25410.20.32.255
6710.20.33.0/2510.20.33.1 – 10.20.33.12610.20.33.127
6810.20.33.128/2510.20.33.129 – 10.20.33.25410.20.33.255
6910.20.34.0/2510.20.34.1 – 10.20.34.12610.20.34.127
7010.20.34.128/2510.20.34.129 – 10.20.34.25410.20.34.255
7110.20.35.0/2510.20.35.1 – 10.20.35.12610.20.35.127
7210.20.35.128/2510.20.35.129 – 10.20.35.25410.20.35.255
7310.20.36.0/2510.20.36.1 – 10.20.36.12610.20.36.127
7410.20.36.128/2510.20.36.129 – 10.20.36.25410.20.36.255
7510.20.37.0/2510.20.37.1 – 10.20.37.12610.20.37.127
7610.20.37.128/2510.20.37.129 – 10.20.37.25410.20.37.255
7710.20.38.0/2510.20.38.1 – 10.20.38.12610.20.38.127
7810.20.38.128/2510.20.38.129 – 10.20.38.25410.20.38.255
7910.20.39.0/2510.20.39.1 – 10.20.39.12610.20.39.127
8010.20.39.128/2510.20.39.129 – 10.20.39.25410.20.39.255
8110.20.40.0/2510.20.40.1 – 10.20.40.12610.20.40.127
8210.20.40.128/2510.20.40.129 – 10.20.40.25410.20.40.255
8310.20.41.0/2510.20.41.1 – 10.20.41.12610.20.41.127
8410.20.41.128/2510.20.41.129 – 10.20.41.25410.20.41.255
8510.20.42.0/2510.20.42.1 – 10.20.42.12610.20.42.127
8610.20.42.128/2510.20.42.129 – 10.20.42.25410.20.42.255
8710.20.43.0/2510.20.43.1 – 10.20.43.12610.20.43.127
8810.20.43.128/2510.20.43.129 – 10.20.43.25410.20.43.255
8910.20.44.0/2510.20.44.1 – 10.20.44.12610.20.44.127
9010.20.44.128/2510.20.44.129 – 10.20.44.25410.20.44.255
9110.20.45.0/2510.20.45.1 – 10.20.45.12610.20.45.127
9210.20.45.128/2510.20.45.129 – 10.20.45.25410.20.45.255
9310.20.46.0/2510.20.46.1 – 10.20.46.12610.20.46.127
9410.20.46.128/2510.20.46.129 – 10.20.46.25410.20.46.255
9510.20.47.0/2510.20.47.1 – 10.20.47.12610.20.47.127
9610.20.47.128/2510.20.47.129 – 10.20.47.25410.20.47.255
9710.20.48.0/2510.20.48.1 – 10.20.48.12610.20.48.127
9810.20.48.128/2510.20.48.129 – 10.20.48.25410.20.48.255
9910.20.49.0/2510.20.49.1 – 10.20.49.12610.20.49.127
10010.20.49.128/2510.20.49.129 – 10.20.49.25410.20.49.255
10110.20.50.0/2510.20.50.1 – 10.20.50.12610.20.50.127
10210.20.50.128/2510.20.50.129 – 10.20.50.25410.20.50.255
10310.20.51.0/2510.20.51.1 – 10.20.51.12610.20.51.127
10410.20.51.128/2510.20.51.129 – 10.20.51.25410.20.51.255
10510.20.52.0/2510.20.52.1 – 10.20.52.12610.20.52.127
10610.20.52.128/2510.20.52.129 – 10.20.52.25410.20.52.255
10710.20.53.0/2510.20.53.1 – 10.20.53.12610.20.53.127
10810.20.53.128/2510.20.53.129 – 10.20.53.25410.20.53.255
10910.20.54.0/2510.20.54.1 – 10.20.54.12610.20.54.127
11010.20.54.128/2510.20.54.129 – 10.20.54.25410.20.54.255
11110.20.55.0/2510.20.55.1 – 10.20.55.12610.20.55.127
11210.20.55.128/2510.20.55.129 – 10.20.55.25410.20.55.255
11310.20.56.0/2510.20.56.1 – 10.20.56.12610.20.56.127
11410.20.56.128/2510.20.56.129 – 10.20.56.25410.20.56.255
11510.20.57.0/2510.20.57.1 – 10.20.57.12610.20.57.127
11610.20.57.128/2510.20.57.129 – 10.20.57.25410.20.57.255
11710.20.58.0/2510.20.58.1 – 10.20.58.12610.20.58.127
11810.20.58.128/2510.20.58.129 – 10.20.58.25410.20.58.255
11910.20.59.0/2510.20.59.1 – 10.20.59.12610.20.59.127
12010.20.59.128/2510.20.59.129 – 10.20.59.25410.20.59.255
12110.20.60.0/2510.20.60.1 – 10.20.60.12610.20.60.127
12210.20.60.128/2510.20.60.129 – 10.20.60.25410.20.60.255
12310.20.61.0/2510.20.61.1 – 10.20.61.12610.20.61.127
12410.20.61.128/2510.20.61.129 – 10.20.61.25410.20.61.255
12510.20.62.0/2510.20.62.1 – 10.20.62.12610.20.62.127
12610.20.62.128/2510.20.62.129 – 10.20.62.25410.20.62.255
12710.20.63.0/2510.20.63.1 – 10.20.63.12610.20.63.127
12810.20.63.128/2510.20.63.129 – 10.20.63.25410.20.63.255
12910.20.64.0/2510.20.64.1 – 10.20.64.12610.20.64.127
13010.20.64.128/2510.20.64.129 – 10.20.64.25410.20.64.255
13110.20.65.0/2510.20.65.1 – 10.20.65.12610.20.65.127
13210.20.65.128/2510.20.65.129 – 10.20.65.25410.20.65.255
13310.20.66.0/2510.20.66.1 – 10.20.66.12610.20.66.127
13410.20.66.128/2510.20.66.129 – 10.20.66.25410.20.66.255
13510.20.67.0/2510.20.67.1 – 10.20.67.12610.20.67.127
13610.20.67.128/2510.20.67.129 – 10.20.67.25410.20.67.255
13710.20.68.0/2510.20.68.1 – 10.20.68.12610.20.68.127
13810.20.68.128/2510.20.68.129 – 10.20.68.25410.20.68.255
13910.20.69.0/2510.20.69.1 – 10.20.69.12610.20.69.127
14010.20.69.128/2510.20.69.129 – 10.20.69.25410.20.69.255
14110.20.70.0/2510.20.70.1 – 10.20.70.12610.20.70.127
14210.20.70.128/2510.20.70.129 – 10.20.70.25410.20.70.255
14310.20.71.0/2510.20.71.1 – 10.20.71.12610.20.71.127
14410.20.71.128/2510.20.71.129 – 10.20.71.25410.20.71.255
14510.20.72.0/2510.20.72.1 – 10.20.72.12610.20.72.127
14610.20.72.128/2510.20.72.129 – 10.20.72.25410.20.72.255
14710.20.73.0/2510.20.73.1 – 10.20.73.12610.20.73.127
14810.20.73.128/2510.20.73.129 – 10.20.73.25410.20.73.255
14910.20.74.0/2510.20.74.1 – 10.20.74.12610.20.74.127
15010.20.74.128/2510.20.74.129 – 10.20.74.25410.20.74.255
15110.20.75.0/2510.20.75.1 – 10.20.75.12610.20.75.127
15210.20.75.128/2510.20.75.129 – 10.20.75.25410.20.75.255
15310.20.76.0/2510.20.76.1 – 10.20.76.12610.20.76.127
15410.20.76.128/2510.20.76.129 – 10.20.76.25410.20.76.255
15510.20.77.0/2510.20.77.1 – 10.20.77.12610.20.77.127
15610.20.77.128/2510.20.77.129 – 10.20.77.25410.20.77.255
15710.20.78.0/2510.20.78.1 – 10.20.78.12610.20.78.127
15810.20.78.128/2510.20.78.129 – 10.20.78.25410.20.78.255
15910.20.79.0/2510.20.79.1 – 10.20.79.12610.20.79.127
16010.20.79.128/2510.20.79.129 – 10.20.79.25410.20.79.255
16110.20.80.0/2510.20.80.1 – 10.20.80.12610.20.80.127
16210.20.80.128/2510.20.80.129 – 10.20.80.25410.20.80.255
16310.20.81.0/2510.20.81.1 – 10.20.81.12610.20.81.127
16410.20.81.128/2510.20.81.129 – 10.20.81.25410.20.81.255
16510.20.82.0/2510.20.82.1 – 10.20.82.12610.20.82.127
16610.20.82.128/2510.20.82.129 – 10.20.82.25410.20.82.255
16710.20.83.0/2510.20.83.1 – 10.20.83.12610.20.83.127
16810.20.83.128/2510.20.83.129 – 10.20.83.25410.20.83.255
16910.20.84.0/2510.20.84.1 – 10.20.84.12610.20.84.127
17010.20.84.128/2510.20.84.129 – 10.20.84.25410.20.84.255
17110.20.85.0/2510.20.85.1 – 10.20.85.12610.20.85.127
17210.20.85.128/2510.20.85.129 – 10.20.85.25410.20.85.255
17310.20.86.0/2510.20.86.1 – 10.20.86.12610.20.86.127
17410.20.86.128/2510.20.86.129 – 10.20.86.25410.20.86.255
17510.20.87.0/2510.20.87.1 – 10.20.87.12610.20.87.127
17610.20.87.128/2510.20.87.129 – 10.20.87.25410.20.87.255
17710.20.88.0/2510.20.88.1 – 10.20.88.12610.20.88.127
17810.20.88.128/2510.20.88.129 – 10.20.88.25410.20.88.255
17910.20.89.0/2510.20.89.1 – 10.20.89.12610.20.89.127
18010.20.89.128/2510.20.89.129 – 10.20.89.25410.20.89.255
18110.20.90.0/2510.20.90.1 – 10.20.90.12610.20.90.127
18210.20.90.128/2510.20.90.129 – 10.20.90.25410.20.90.255
18310.20.91.0/2510.20.91.1 – 10.20.91.12610.20.91.127
18410.20.91.128/2510.20.91.129 – 10.20.91.25410.20.91.255
18510.20.92.0/2510.20.92.1 – 10.20.92.12610.20.92.127
18610.20.92.128/2510.20.92.129 – 10.20.92.25410.20.92.255
18710.20.93.0/2510.20.93.1 – 10.20.93.12610.20.93.127
18810.20.93.128/2510.20.93.129 – 10.20.93.25410.20.93.255
18910.20.94.0/2510.20.94.1 – 10.20.94.12610.20.94.127
19010.20.94.128/2510.20.94.129 – 10.20.94.25410.20.94.255
19110.20.95.0/2510.20.95.1 – 10.20.95.12610.20.95.127
19210.20.95.128/2510.20.95.129 – 10.20.95.25410.20.95.255
19310.20.96.0/2510.20.96.1 – 10.20.96.12610.20.96.127
19410.20.96.128/2510.20.96.129 – 10.20.96.25410.20.96.255
19510.20.97.0/2510.20.97.1 – 10.20.97.12610.20.97.127
19610.20.97.128/2510.20.97.129 – 10.20.97.25410.20.97.255
19710.20.98.0/2510.20.98.1 – 10.20.98.12610.20.98.127
19810.20.98.128/2510.20.98.129 – 10.20.98.25410.20.98.255
19910.20.99.0/2510.20.99.1 – 10.20.99.12610.20.99.127
20010.20.99.128/2510.20.99.129 – 10.20.99.25410.20.99.255
20110.20.100.0/2510.20.100.1 – 10.20.100.12610.20.100.127
20210.20.100.128/2510.20.100.129 – 10.20.100.25410.20.100.255
20310.20.101.0/2510.20.101.1 – 10.20.101.12610.20.101.127
20410.20.101.128/2510.20.101.129 – 10.20.101.25410.20.101.255
20510.20.102.0/2510.20.102.1 – 10.20.102.12610.20.102.127
20610.20.102.128/2510.20.102.129 – 10.20.102.25410.20.102.255
20710.20.103.0/2510.20.103.1 – 10.20.103.12610.20.103.127
20810.20.103.128/2510.20.103.129 – 10.20.103.25410.20.103.255
20910.20.104.0/2510.20.104.1 – 10.20.104.12610.20.104.127
21010.20.104.128/2510.20.104.129 – 10.20.104.25410.20.104.255
21110.20.105.0/2510.20.105.1 – 10.20.105.12610.20.105.127
21210.20.105.128/2510.20.105.129 – 10.20.105.25410.20.105.255
21310.20.106.0/2510.20.106.1 – 10.20.106.12610.20.106.127
21410.20.106.128/2510.20.106.129 – 10.20.106.25410.20.106.255
21510.20.107.0/2510.20.107.1 – 10.20.107.12610.20.107.127
21610.20.107.128/2510.20.107.129 – 10.20.107.25410.20.107.255
21710.20.108.0/2510.20.108.1 – 10.20.108.12610.20.108.127
21810.20.108.128/2510.20.108.129 – 10.20.108.25410.20.108.255
21910.20.109.0/2510.20.109.1 – 10.20.109.12610.20.109.127
22010.20.109.128/2510.20.109.129 – 10.20.109.25410.20.109.255
22110.20.110.0/2510.20.110.1 – 10.20.110.12610.20.110.127
22210.20.110.128/2510.20.110.129 – 10.20.110.25410.20.110.255
22310.20.111.0/2510.20.111.1 – 10.20.111.12610.20.111.127
22410.20.111.128/2510.20.111.129 – 10.20.111.25410.20.111.255
22510.20.112.0/2510.20.112.1 – 10.20.112.12610.20.112.127
22610.20.112.128/2510.20.112.129 – 10.20.112.25410.20.112.255
22710.20.113.0/2510.20.113.1 – 10.20.113.12610.20.113.127
22810.20.113.128/2510.20.113.129 – 10.20.113.25410.20.113.255
22910.20.114.0/2510.20.114.1 – 10.20.114.12610.20.114.127
23010.20.114.128/2510.20.114.129 – 10.20.114.25410.20.114.255
23110.20.115.0/2510.20.115.1 – 10.20.115.12610.20.115.127
23210.20.115.128/2510.20.115.129 – 10.20.115.25410.20.115.255
23310.20.116.0/2510.20.116.1 – 10.20.116.12610.20.116.127
23410.20.116.128/2510.20.116.129 – 10.20.116.25410.20.116.255
23510.20.117.0/2510.20.117.1 – 10.20.117.12610.20.117.127
23610.20.117.128/2510.20.117.129 – 10.20.117.25410.20.117.255
23710.20.118.0/2510.20.118.1 – 10.20.118.12610.20.118.127
23810.20.118.128/2510.20.118.129 – 10.20.118.25410.20.118.255
23910.20.119.0/2510.20.119.1 – 10.20.119.12610.20.119.127
24010.20.119.128/2510.20.119.129 – 10.20.119.25410.20.119.255
24110.20.120.0/2510.20.120.1 – 10.20.120.12610.20.120.127
24210.20.120.128/2510.20.120.129 – 10.20.120.25410.20.120.255
24310.20.121.0/2510.20.121.1 – 10.20.121.12610.20.121.127
24410.20.121.128/2510.20.121.129 – 10.20.121.25410.20.121.255
24510.20.122.0/2510.20.122.1 – 10.20.122.12610.20.122.127
24610.20.122.128/2510.20.122.129 – 10.20.122.25410.20.122.255
24710.20.123.0/2510.20.123.1 – 10.20.123.12610.20.123.127
24810.20.123.128/2510.20.123.129 – 10.20.123.25410.20.123.255
24910.20.124.0/2510.20.124.1 – 10.20.124.12610.20.124.127
25010.20.124.128/2510.20.124.129 – 10.20.124.25410.20.124.255
25110.20.125.0/2510.20.125.1 – 10.20.125.12610.20.125.127
25210.20.125.128/2510.20.125.129 – 10.20.125.25410.20.125.255
25310.20.126.0/2510.20.126.1 – 10.20.126.12610.20.126.127
25410.20.126.128/2510.20.126.129 – 10.20.126.25410.20.126.255
25510.20.127.0/2510.20.127.1 – 10.20.127.12610.20.127.127
25610.20.127.128/2510.20.127.129 – 10.20.127.25410.20.127.255

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 →