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)10.65.0.0/16
network10.65.0.0/16
broadcast10.65.255.255
first host10.65.0.1
last host10.65.255.254
subnet mask255.255.0.0
wildcard0.0.255.255
addresses65,536
usable hosts65,534
classA
ipcalc 10.65.0.0/16
address00001010.01000001.00000000.00000000
subnet mask11111111.11111111.00000000.00000000
network00001010.01000001.00000000.00000000
broadcast00001010.01000001.11111111.11111111
green = network part, grey = host part
hex0x0a410000
decimal172032000
reverse dns0.0.65.10.in-addr.arpa
ipv4-mapped::ffff:a41:0

/16 split into /25 · 512 subnets

close ×
#networkhost rangebroadcast
110.65.0.0/2510.65.0.1 – 10.65.0.12610.65.0.127
210.65.0.128/2510.65.0.129 – 10.65.0.25410.65.0.255
310.65.1.0/2510.65.1.1 – 10.65.1.12610.65.1.127
410.65.1.128/2510.65.1.129 – 10.65.1.25410.65.1.255
510.65.2.0/2510.65.2.1 – 10.65.2.12610.65.2.127
610.65.2.128/2510.65.2.129 – 10.65.2.25410.65.2.255
710.65.3.0/2510.65.3.1 – 10.65.3.12610.65.3.127
810.65.3.128/2510.65.3.129 – 10.65.3.25410.65.3.255
910.65.4.0/2510.65.4.1 – 10.65.4.12610.65.4.127
1010.65.4.128/2510.65.4.129 – 10.65.4.25410.65.4.255
1110.65.5.0/2510.65.5.1 – 10.65.5.12610.65.5.127
1210.65.5.128/2510.65.5.129 – 10.65.5.25410.65.5.255
1310.65.6.0/2510.65.6.1 – 10.65.6.12610.65.6.127
1410.65.6.128/2510.65.6.129 – 10.65.6.25410.65.6.255
1510.65.7.0/2510.65.7.1 – 10.65.7.12610.65.7.127
1610.65.7.128/2510.65.7.129 – 10.65.7.25410.65.7.255
1710.65.8.0/2510.65.8.1 – 10.65.8.12610.65.8.127
1810.65.8.128/2510.65.8.129 – 10.65.8.25410.65.8.255
1910.65.9.0/2510.65.9.1 – 10.65.9.12610.65.9.127
2010.65.9.128/2510.65.9.129 – 10.65.9.25410.65.9.255
2110.65.10.0/2510.65.10.1 – 10.65.10.12610.65.10.127
2210.65.10.128/2510.65.10.129 – 10.65.10.25410.65.10.255
2310.65.11.0/2510.65.11.1 – 10.65.11.12610.65.11.127
2410.65.11.128/2510.65.11.129 – 10.65.11.25410.65.11.255
2510.65.12.0/2510.65.12.1 – 10.65.12.12610.65.12.127
2610.65.12.128/2510.65.12.129 – 10.65.12.25410.65.12.255
2710.65.13.0/2510.65.13.1 – 10.65.13.12610.65.13.127
2810.65.13.128/2510.65.13.129 – 10.65.13.25410.65.13.255
2910.65.14.0/2510.65.14.1 – 10.65.14.12610.65.14.127
3010.65.14.128/2510.65.14.129 – 10.65.14.25410.65.14.255
3110.65.15.0/2510.65.15.1 – 10.65.15.12610.65.15.127
3210.65.15.128/2510.65.15.129 – 10.65.15.25410.65.15.255
3310.65.16.0/2510.65.16.1 – 10.65.16.12610.65.16.127
3410.65.16.128/2510.65.16.129 – 10.65.16.25410.65.16.255
3510.65.17.0/2510.65.17.1 – 10.65.17.12610.65.17.127
3610.65.17.128/2510.65.17.129 – 10.65.17.25410.65.17.255
3710.65.18.0/2510.65.18.1 – 10.65.18.12610.65.18.127
3810.65.18.128/2510.65.18.129 – 10.65.18.25410.65.18.255
3910.65.19.0/2510.65.19.1 – 10.65.19.12610.65.19.127
4010.65.19.128/2510.65.19.129 – 10.65.19.25410.65.19.255
4110.65.20.0/2510.65.20.1 – 10.65.20.12610.65.20.127
4210.65.20.128/2510.65.20.129 – 10.65.20.25410.65.20.255
4310.65.21.0/2510.65.21.1 – 10.65.21.12610.65.21.127
4410.65.21.128/2510.65.21.129 – 10.65.21.25410.65.21.255
4510.65.22.0/2510.65.22.1 – 10.65.22.12610.65.22.127
4610.65.22.128/2510.65.22.129 – 10.65.22.25410.65.22.255
4710.65.23.0/2510.65.23.1 – 10.65.23.12610.65.23.127
4810.65.23.128/2510.65.23.129 – 10.65.23.25410.65.23.255
4910.65.24.0/2510.65.24.1 – 10.65.24.12610.65.24.127
5010.65.24.128/2510.65.24.129 – 10.65.24.25410.65.24.255
5110.65.25.0/2510.65.25.1 – 10.65.25.12610.65.25.127
5210.65.25.128/2510.65.25.129 – 10.65.25.25410.65.25.255
5310.65.26.0/2510.65.26.1 – 10.65.26.12610.65.26.127
5410.65.26.128/2510.65.26.129 – 10.65.26.25410.65.26.255
5510.65.27.0/2510.65.27.1 – 10.65.27.12610.65.27.127
5610.65.27.128/2510.65.27.129 – 10.65.27.25410.65.27.255
5710.65.28.0/2510.65.28.1 – 10.65.28.12610.65.28.127
5810.65.28.128/2510.65.28.129 – 10.65.28.25410.65.28.255
5910.65.29.0/2510.65.29.1 – 10.65.29.12610.65.29.127
6010.65.29.128/2510.65.29.129 – 10.65.29.25410.65.29.255
6110.65.30.0/2510.65.30.1 – 10.65.30.12610.65.30.127
6210.65.30.128/2510.65.30.129 – 10.65.30.25410.65.30.255
6310.65.31.0/2510.65.31.1 – 10.65.31.12610.65.31.127
6410.65.31.128/2510.65.31.129 – 10.65.31.25410.65.31.255
6510.65.32.0/2510.65.32.1 – 10.65.32.12610.65.32.127
6610.65.32.128/2510.65.32.129 – 10.65.32.25410.65.32.255
6710.65.33.0/2510.65.33.1 – 10.65.33.12610.65.33.127
6810.65.33.128/2510.65.33.129 – 10.65.33.25410.65.33.255
6910.65.34.0/2510.65.34.1 – 10.65.34.12610.65.34.127
7010.65.34.128/2510.65.34.129 – 10.65.34.25410.65.34.255
7110.65.35.0/2510.65.35.1 – 10.65.35.12610.65.35.127
7210.65.35.128/2510.65.35.129 – 10.65.35.25410.65.35.255
7310.65.36.0/2510.65.36.1 – 10.65.36.12610.65.36.127
7410.65.36.128/2510.65.36.129 – 10.65.36.25410.65.36.255
7510.65.37.0/2510.65.37.1 – 10.65.37.12610.65.37.127
7610.65.37.128/2510.65.37.129 – 10.65.37.25410.65.37.255
7710.65.38.0/2510.65.38.1 – 10.65.38.12610.65.38.127
7810.65.38.128/2510.65.38.129 – 10.65.38.25410.65.38.255
7910.65.39.0/2510.65.39.1 – 10.65.39.12610.65.39.127
8010.65.39.128/2510.65.39.129 – 10.65.39.25410.65.39.255
8110.65.40.0/2510.65.40.1 – 10.65.40.12610.65.40.127
8210.65.40.128/2510.65.40.129 – 10.65.40.25410.65.40.255
8310.65.41.0/2510.65.41.1 – 10.65.41.12610.65.41.127
8410.65.41.128/2510.65.41.129 – 10.65.41.25410.65.41.255
8510.65.42.0/2510.65.42.1 – 10.65.42.12610.65.42.127
8610.65.42.128/2510.65.42.129 – 10.65.42.25410.65.42.255
8710.65.43.0/2510.65.43.1 – 10.65.43.12610.65.43.127
8810.65.43.128/2510.65.43.129 – 10.65.43.25410.65.43.255
8910.65.44.0/2510.65.44.1 – 10.65.44.12610.65.44.127
9010.65.44.128/2510.65.44.129 – 10.65.44.25410.65.44.255
9110.65.45.0/2510.65.45.1 – 10.65.45.12610.65.45.127
9210.65.45.128/2510.65.45.129 – 10.65.45.25410.65.45.255
9310.65.46.0/2510.65.46.1 – 10.65.46.12610.65.46.127
9410.65.46.128/2510.65.46.129 – 10.65.46.25410.65.46.255
9510.65.47.0/2510.65.47.1 – 10.65.47.12610.65.47.127
9610.65.47.128/2510.65.47.129 – 10.65.47.25410.65.47.255
9710.65.48.0/2510.65.48.1 – 10.65.48.12610.65.48.127
9810.65.48.128/2510.65.48.129 – 10.65.48.25410.65.48.255
9910.65.49.0/2510.65.49.1 – 10.65.49.12610.65.49.127
10010.65.49.128/2510.65.49.129 – 10.65.49.25410.65.49.255
10110.65.50.0/2510.65.50.1 – 10.65.50.12610.65.50.127
10210.65.50.128/2510.65.50.129 – 10.65.50.25410.65.50.255
10310.65.51.0/2510.65.51.1 – 10.65.51.12610.65.51.127
10410.65.51.128/2510.65.51.129 – 10.65.51.25410.65.51.255
10510.65.52.0/2510.65.52.1 – 10.65.52.12610.65.52.127
10610.65.52.128/2510.65.52.129 – 10.65.52.25410.65.52.255
10710.65.53.0/2510.65.53.1 – 10.65.53.12610.65.53.127
10810.65.53.128/2510.65.53.129 – 10.65.53.25410.65.53.255
10910.65.54.0/2510.65.54.1 – 10.65.54.12610.65.54.127
11010.65.54.128/2510.65.54.129 – 10.65.54.25410.65.54.255
11110.65.55.0/2510.65.55.1 – 10.65.55.12610.65.55.127
11210.65.55.128/2510.65.55.129 – 10.65.55.25410.65.55.255
11310.65.56.0/2510.65.56.1 – 10.65.56.12610.65.56.127
11410.65.56.128/2510.65.56.129 – 10.65.56.25410.65.56.255
11510.65.57.0/2510.65.57.1 – 10.65.57.12610.65.57.127
11610.65.57.128/2510.65.57.129 – 10.65.57.25410.65.57.255
11710.65.58.0/2510.65.58.1 – 10.65.58.12610.65.58.127
11810.65.58.128/2510.65.58.129 – 10.65.58.25410.65.58.255
11910.65.59.0/2510.65.59.1 – 10.65.59.12610.65.59.127
12010.65.59.128/2510.65.59.129 – 10.65.59.25410.65.59.255
12110.65.60.0/2510.65.60.1 – 10.65.60.12610.65.60.127
12210.65.60.128/2510.65.60.129 – 10.65.60.25410.65.60.255
12310.65.61.0/2510.65.61.1 – 10.65.61.12610.65.61.127
12410.65.61.128/2510.65.61.129 – 10.65.61.25410.65.61.255
12510.65.62.0/2510.65.62.1 – 10.65.62.12610.65.62.127
12610.65.62.128/2510.65.62.129 – 10.65.62.25410.65.62.255
12710.65.63.0/2510.65.63.1 – 10.65.63.12610.65.63.127
12810.65.63.128/2510.65.63.129 – 10.65.63.25410.65.63.255
12910.65.64.0/2510.65.64.1 – 10.65.64.12610.65.64.127
13010.65.64.128/2510.65.64.129 – 10.65.64.25410.65.64.255
13110.65.65.0/2510.65.65.1 – 10.65.65.12610.65.65.127
13210.65.65.128/2510.65.65.129 – 10.65.65.25410.65.65.255
13310.65.66.0/2510.65.66.1 – 10.65.66.12610.65.66.127
13410.65.66.128/2510.65.66.129 – 10.65.66.25410.65.66.255
13510.65.67.0/2510.65.67.1 – 10.65.67.12610.65.67.127
13610.65.67.128/2510.65.67.129 – 10.65.67.25410.65.67.255
13710.65.68.0/2510.65.68.1 – 10.65.68.12610.65.68.127
13810.65.68.128/2510.65.68.129 – 10.65.68.25410.65.68.255
13910.65.69.0/2510.65.69.1 – 10.65.69.12610.65.69.127
14010.65.69.128/2510.65.69.129 – 10.65.69.25410.65.69.255
14110.65.70.0/2510.65.70.1 – 10.65.70.12610.65.70.127
14210.65.70.128/2510.65.70.129 – 10.65.70.25410.65.70.255
14310.65.71.0/2510.65.71.1 – 10.65.71.12610.65.71.127
14410.65.71.128/2510.65.71.129 – 10.65.71.25410.65.71.255
14510.65.72.0/2510.65.72.1 – 10.65.72.12610.65.72.127
14610.65.72.128/2510.65.72.129 – 10.65.72.25410.65.72.255
14710.65.73.0/2510.65.73.1 – 10.65.73.12610.65.73.127
14810.65.73.128/2510.65.73.129 – 10.65.73.25410.65.73.255
14910.65.74.0/2510.65.74.1 – 10.65.74.12610.65.74.127
15010.65.74.128/2510.65.74.129 – 10.65.74.25410.65.74.255
15110.65.75.0/2510.65.75.1 – 10.65.75.12610.65.75.127
15210.65.75.128/2510.65.75.129 – 10.65.75.25410.65.75.255
15310.65.76.0/2510.65.76.1 – 10.65.76.12610.65.76.127
15410.65.76.128/2510.65.76.129 – 10.65.76.25410.65.76.255
15510.65.77.0/2510.65.77.1 – 10.65.77.12610.65.77.127
15610.65.77.128/2510.65.77.129 – 10.65.77.25410.65.77.255
15710.65.78.0/2510.65.78.1 – 10.65.78.12610.65.78.127
15810.65.78.128/2510.65.78.129 – 10.65.78.25410.65.78.255
15910.65.79.0/2510.65.79.1 – 10.65.79.12610.65.79.127
16010.65.79.128/2510.65.79.129 – 10.65.79.25410.65.79.255
16110.65.80.0/2510.65.80.1 – 10.65.80.12610.65.80.127
16210.65.80.128/2510.65.80.129 – 10.65.80.25410.65.80.255
16310.65.81.0/2510.65.81.1 – 10.65.81.12610.65.81.127
16410.65.81.128/2510.65.81.129 – 10.65.81.25410.65.81.255
16510.65.82.0/2510.65.82.1 – 10.65.82.12610.65.82.127
16610.65.82.128/2510.65.82.129 – 10.65.82.25410.65.82.255
16710.65.83.0/2510.65.83.1 – 10.65.83.12610.65.83.127
16810.65.83.128/2510.65.83.129 – 10.65.83.25410.65.83.255
16910.65.84.0/2510.65.84.1 – 10.65.84.12610.65.84.127
17010.65.84.128/2510.65.84.129 – 10.65.84.25410.65.84.255
17110.65.85.0/2510.65.85.1 – 10.65.85.12610.65.85.127
17210.65.85.128/2510.65.85.129 – 10.65.85.25410.65.85.255
17310.65.86.0/2510.65.86.1 – 10.65.86.12610.65.86.127
17410.65.86.128/2510.65.86.129 – 10.65.86.25410.65.86.255
17510.65.87.0/2510.65.87.1 – 10.65.87.12610.65.87.127
17610.65.87.128/2510.65.87.129 – 10.65.87.25410.65.87.255
17710.65.88.0/2510.65.88.1 – 10.65.88.12610.65.88.127
17810.65.88.128/2510.65.88.129 – 10.65.88.25410.65.88.255
17910.65.89.0/2510.65.89.1 – 10.65.89.12610.65.89.127
18010.65.89.128/2510.65.89.129 – 10.65.89.25410.65.89.255
18110.65.90.0/2510.65.90.1 – 10.65.90.12610.65.90.127
18210.65.90.128/2510.65.90.129 – 10.65.90.25410.65.90.255
18310.65.91.0/2510.65.91.1 – 10.65.91.12610.65.91.127
18410.65.91.128/2510.65.91.129 – 10.65.91.25410.65.91.255
18510.65.92.0/2510.65.92.1 – 10.65.92.12610.65.92.127
18610.65.92.128/2510.65.92.129 – 10.65.92.25410.65.92.255
18710.65.93.0/2510.65.93.1 – 10.65.93.12610.65.93.127
18810.65.93.128/2510.65.93.129 – 10.65.93.25410.65.93.255
18910.65.94.0/2510.65.94.1 – 10.65.94.12610.65.94.127
19010.65.94.128/2510.65.94.129 – 10.65.94.25410.65.94.255
19110.65.95.0/2510.65.95.1 – 10.65.95.12610.65.95.127
19210.65.95.128/2510.65.95.129 – 10.65.95.25410.65.95.255
19310.65.96.0/2510.65.96.1 – 10.65.96.12610.65.96.127
19410.65.96.128/2510.65.96.129 – 10.65.96.25410.65.96.255
19510.65.97.0/2510.65.97.1 – 10.65.97.12610.65.97.127
19610.65.97.128/2510.65.97.129 – 10.65.97.25410.65.97.255
19710.65.98.0/2510.65.98.1 – 10.65.98.12610.65.98.127
19810.65.98.128/2510.65.98.129 – 10.65.98.25410.65.98.255
19910.65.99.0/2510.65.99.1 – 10.65.99.12610.65.99.127
20010.65.99.128/2510.65.99.129 – 10.65.99.25410.65.99.255
20110.65.100.0/2510.65.100.1 – 10.65.100.12610.65.100.127
20210.65.100.128/2510.65.100.129 – 10.65.100.25410.65.100.255
20310.65.101.0/2510.65.101.1 – 10.65.101.12610.65.101.127
20410.65.101.128/2510.65.101.129 – 10.65.101.25410.65.101.255
20510.65.102.0/2510.65.102.1 – 10.65.102.12610.65.102.127
20610.65.102.128/2510.65.102.129 – 10.65.102.25410.65.102.255
20710.65.103.0/2510.65.103.1 – 10.65.103.12610.65.103.127
20810.65.103.128/2510.65.103.129 – 10.65.103.25410.65.103.255
20910.65.104.0/2510.65.104.1 – 10.65.104.12610.65.104.127
21010.65.104.128/2510.65.104.129 – 10.65.104.25410.65.104.255
21110.65.105.0/2510.65.105.1 – 10.65.105.12610.65.105.127
21210.65.105.128/2510.65.105.129 – 10.65.105.25410.65.105.255
21310.65.106.0/2510.65.106.1 – 10.65.106.12610.65.106.127
21410.65.106.128/2510.65.106.129 – 10.65.106.25410.65.106.255
21510.65.107.0/2510.65.107.1 – 10.65.107.12610.65.107.127
21610.65.107.128/2510.65.107.129 – 10.65.107.25410.65.107.255
21710.65.108.0/2510.65.108.1 – 10.65.108.12610.65.108.127
21810.65.108.128/2510.65.108.129 – 10.65.108.25410.65.108.255
21910.65.109.0/2510.65.109.1 – 10.65.109.12610.65.109.127
22010.65.109.128/2510.65.109.129 – 10.65.109.25410.65.109.255
22110.65.110.0/2510.65.110.1 – 10.65.110.12610.65.110.127
22210.65.110.128/2510.65.110.129 – 10.65.110.25410.65.110.255
22310.65.111.0/2510.65.111.1 – 10.65.111.12610.65.111.127
22410.65.111.128/2510.65.111.129 – 10.65.111.25410.65.111.255
22510.65.112.0/2510.65.112.1 – 10.65.112.12610.65.112.127
22610.65.112.128/2510.65.112.129 – 10.65.112.25410.65.112.255
22710.65.113.0/2510.65.113.1 – 10.65.113.12610.65.113.127
22810.65.113.128/2510.65.113.129 – 10.65.113.25410.65.113.255
22910.65.114.0/2510.65.114.1 – 10.65.114.12610.65.114.127
23010.65.114.128/2510.65.114.129 – 10.65.114.25410.65.114.255
23110.65.115.0/2510.65.115.1 – 10.65.115.12610.65.115.127
23210.65.115.128/2510.65.115.129 – 10.65.115.25410.65.115.255
23310.65.116.0/2510.65.116.1 – 10.65.116.12610.65.116.127
23410.65.116.128/2510.65.116.129 – 10.65.116.25410.65.116.255
23510.65.117.0/2510.65.117.1 – 10.65.117.12610.65.117.127
23610.65.117.128/2510.65.117.129 – 10.65.117.25410.65.117.255
23710.65.118.0/2510.65.118.1 – 10.65.118.12610.65.118.127
23810.65.118.128/2510.65.118.129 – 10.65.118.25410.65.118.255
23910.65.119.0/2510.65.119.1 – 10.65.119.12610.65.119.127
24010.65.119.128/2510.65.119.129 – 10.65.119.25410.65.119.255
24110.65.120.0/2510.65.120.1 – 10.65.120.12610.65.120.127
24210.65.120.128/2510.65.120.129 – 10.65.120.25410.65.120.255
24310.65.121.0/2510.65.121.1 – 10.65.121.12610.65.121.127
24410.65.121.128/2510.65.121.129 – 10.65.121.25410.65.121.255
24510.65.122.0/2510.65.122.1 – 10.65.122.12610.65.122.127
24610.65.122.128/2510.65.122.129 – 10.65.122.25410.65.122.255
24710.65.123.0/2510.65.123.1 – 10.65.123.12610.65.123.127
24810.65.123.128/2510.65.123.129 – 10.65.123.25410.65.123.255
24910.65.124.0/2510.65.124.1 – 10.65.124.12610.65.124.127
25010.65.124.128/2510.65.124.129 – 10.65.124.25410.65.124.255
25110.65.125.0/2510.65.125.1 – 10.65.125.12610.65.125.127
25210.65.125.128/2510.65.125.129 – 10.65.125.25410.65.125.255
25310.65.126.0/2510.65.126.1 – 10.65.126.12610.65.126.127
25410.65.126.128/2510.65.126.129 – 10.65.126.25410.65.126.255
25510.65.127.0/2510.65.127.1 – 10.65.127.12610.65.127.127
25610.65.127.128/2510.65.127.129 – 10.65.127.25410.65.127.255

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 →