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)10.89.0.0/16
network10.89.0.0/16
broadcast10.89.255.255
first host10.89.0.1
last host10.89.255.254
subnet mask255.255.0.0
wildcard0.0.255.255
addresses65,536
usable hosts65,534
classA
ipcalc 10.89.0.0/16
address00001010.01011001.00000000.00000000
subnet mask11111111.11111111.00000000.00000000
network00001010.01011001.00000000.00000000
broadcast00001010.01011001.11111111.11111111
green = network part, grey = host part
hex0x0a590000
decimal173604864
reverse dns0.0.89.10.in-addr.arpa
ipv4-mapped::ffff:a59:0

/16 split into /25 · 512 subnets

close ×
#networkhost rangebroadcast
110.89.0.0/2510.89.0.1 – 10.89.0.12610.89.0.127
210.89.0.128/2510.89.0.129 – 10.89.0.25410.89.0.255
310.89.1.0/2510.89.1.1 – 10.89.1.12610.89.1.127
410.89.1.128/2510.89.1.129 – 10.89.1.25410.89.1.255
510.89.2.0/2510.89.2.1 – 10.89.2.12610.89.2.127
610.89.2.128/2510.89.2.129 – 10.89.2.25410.89.2.255
710.89.3.0/2510.89.3.1 – 10.89.3.12610.89.3.127
810.89.3.128/2510.89.3.129 – 10.89.3.25410.89.3.255
910.89.4.0/2510.89.4.1 – 10.89.4.12610.89.4.127
1010.89.4.128/2510.89.4.129 – 10.89.4.25410.89.4.255
1110.89.5.0/2510.89.5.1 – 10.89.5.12610.89.5.127
1210.89.5.128/2510.89.5.129 – 10.89.5.25410.89.5.255
1310.89.6.0/2510.89.6.1 – 10.89.6.12610.89.6.127
1410.89.6.128/2510.89.6.129 – 10.89.6.25410.89.6.255
1510.89.7.0/2510.89.7.1 – 10.89.7.12610.89.7.127
1610.89.7.128/2510.89.7.129 – 10.89.7.25410.89.7.255
1710.89.8.0/2510.89.8.1 – 10.89.8.12610.89.8.127
1810.89.8.128/2510.89.8.129 – 10.89.8.25410.89.8.255
1910.89.9.0/2510.89.9.1 – 10.89.9.12610.89.9.127
2010.89.9.128/2510.89.9.129 – 10.89.9.25410.89.9.255
2110.89.10.0/2510.89.10.1 – 10.89.10.12610.89.10.127
2210.89.10.128/2510.89.10.129 – 10.89.10.25410.89.10.255
2310.89.11.0/2510.89.11.1 – 10.89.11.12610.89.11.127
2410.89.11.128/2510.89.11.129 – 10.89.11.25410.89.11.255
2510.89.12.0/2510.89.12.1 – 10.89.12.12610.89.12.127
2610.89.12.128/2510.89.12.129 – 10.89.12.25410.89.12.255
2710.89.13.0/2510.89.13.1 – 10.89.13.12610.89.13.127
2810.89.13.128/2510.89.13.129 – 10.89.13.25410.89.13.255
2910.89.14.0/2510.89.14.1 – 10.89.14.12610.89.14.127
3010.89.14.128/2510.89.14.129 – 10.89.14.25410.89.14.255
3110.89.15.0/2510.89.15.1 – 10.89.15.12610.89.15.127
3210.89.15.128/2510.89.15.129 – 10.89.15.25410.89.15.255
3310.89.16.0/2510.89.16.1 – 10.89.16.12610.89.16.127
3410.89.16.128/2510.89.16.129 – 10.89.16.25410.89.16.255
3510.89.17.0/2510.89.17.1 – 10.89.17.12610.89.17.127
3610.89.17.128/2510.89.17.129 – 10.89.17.25410.89.17.255
3710.89.18.0/2510.89.18.1 – 10.89.18.12610.89.18.127
3810.89.18.128/2510.89.18.129 – 10.89.18.25410.89.18.255
3910.89.19.0/2510.89.19.1 – 10.89.19.12610.89.19.127
4010.89.19.128/2510.89.19.129 – 10.89.19.25410.89.19.255
4110.89.20.0/2510.89.20.1 – 10.89.20.12610.89.20.127
4210.89.20.128/2510.89.20.129 – 10.89.20.25410.89.20.255
4310.89.21.0/2510.89.21.1 – 10.89.21.12610.89.21.127
4410.89.21.128/2510.89.21.129 – 10.89.21.25410.89.21.255
4510.89.22.0/2510.89.22.1 – 10.89.22.12610.89.22.127
4610.89.22.128/2510.89.22.129 – 10.89.22.25410.89.22.255
4710.89.23.0/2510.89.23.1 – 10.89.23.12610.89.23.127
4810.89.23.128/2510.89.23.129 – 10.89.23.25410.89.23.255
4910.89.24.0/2510.89.24.1 – 10.89.24.12610.89.24.127
5010.89.24.128/2510.89.24.129 – 10.89.24.25410.89.24.255
5110.89.25.0/2510.89.25.1 – 10.89.25.12610.89.25.127
5210.89.25.128/2510.89.25.129 – 10.89.25.25410.89.25.255
5310.89.26.0/2510.89.26.1 – 10.89.26.12610.89.26.127
5410.89.26.128/2510.89.26.129 – 10.89.26.25410.89.26.255
5510.89.27.0/2510.89.27.1 – 10.89.27.12610.89.27.127
5610.89.27.128/2510.89.27.129 – 10.89.27.25410.89.27.255
5710.89.28.0/2510.89.28.1 – 10.89.28.12610.89.28.127
5810.89.28.128/2510.89.28.129 – 10.89.28.25410.89.28.255
5910.89.29.0/2510.89.29.1 – 10.89.29.12610.89.29.127
6010.89.29.128/2510.89.29.129 – 10.89.29.25410.89.29.255
6110.89.30.0/2510.89.30.1 – 10.89.30.12610.89.30.127
6210.89.30.128/2510.89.30.129 – 10.89.30.25410.89.30.255
6310.89.31.0/2510.89.31.1 – 10.89.31.12610.89.31.127
6410.89.31.128/2510.89.31.129 – 10.89.31.25410.89.31.255
6510.89.32.0/2510.89.32.1 – 10.89.32.12610.89.32.127
6610.89.32.128/2510.89.32.129 – 10.89.32.25410.89.32.255
6710.89.33.0/2510.89.33.1 – 10.89.33.12610.89.33.127
6810.89.33.128/2510.89.33.129 – 10.89.33.25410.89.33.255
6910.89.34.0/2510.89.34.1 – 10.89.34.12610.89.34.127
7010.89.34.128/2510.89.34.129 – 10.89.34.25410.89.34.255
7110.89.35.0/2510.89.35.1 – 10.89.35.12610.89.35.127
7210.89.35.128/2510.89.35.129 – 10.89.35.25410.89.35.255
7310.89.36.0/2510.89.36.1 – 10.89.36.12610.89.36.127
7410.89.36.128/2510.89.36.129 – 10.89.36.25410.89.36.255
7510.89.37.0/2510.89.37.1 – 10.89.37.12610.89.37.127
7610.89.37.128/2510.89.37.129 – 10.89.37.25410.89.37.255
7710.89.38.0/2510.89.38.1 – 10.89.38.12610.89.38.127
7810.89.38.128/2510.89.38.129 – 10.89.38.25410.89.38.255
7910.89.39.0/2510.89.39.1 – 10.89.39.12610.89.39.127
8010.89.39.128/2510.89.39.129 – 10.89.39.25410.89.39.255
8110.89.40.0/2510.89.40.1 – 10.89.40.12610.89.40.127
8210.89.40.128/2510.89.40.129 – 10.89.40.25410.89.40.255
8310.89.41.0/2510.89.41.1 – 10.89.41.12610.89.41.127
8410.89.41.128/2510.89.41.129 – 10.89.41.25410.89.41.255
8510.89.42.0/2510.89.42.1 – 10.89.42.12610.89.42.127
8610.89.42.128/2510.89.42.129 – 10.89.42.25410.89.42.255
8710.89.43.0/2510.89.43.1 – 10.89.43.12610.89.43.127
8810.89.43.128/2510.89.43.129 – 10.89.43.25410.89.43.255
8910.89.44.0/2510.89.44.1 – 10.89.44.12610.89.44.127
9010.89.44.128/2510.89.44.129 – 10.89.44.25410.89.44.255
9110.89.45.0/2510.89.45.1 – 10.89.45.12610.89.45.127
9210.89.45.128/2510.89.45.129 – 10.89.45.25410.89.45.255
9310.89.46.0/2510.89.46.1 – 10.89.46.12610.89.46.127
9410.89.46.128/2510.89.46.129 – 10.89.46.25410.89.46.255
9510.89.47.0/2510.89.47.1 – 10.89.47.12610.89.47.127
9610.89.47.128/2510.89.47.129 – 10.89.47.25410.89.47.255
9710.89.48.0/2510.89.48.1 – 10.89.48.12610.89.48.127
9810.89.48.128/2510.89.48.129 – 10.89.48.25410.89.48.255
9910.89.49.0/2510.89.49.1 – 10.89.49.12610.89.49.127
10010.89.49.128/2510.89.49.129 – 10.89.49.25410.89.49.255
10110.89.50.0/2510.89.50.1 – 10.89.50.12610.89.50.127
10210.89.50.128/2510.89.50.129 – 10.89.50.25410.89.50.255
10310.89.51.0/2510.89.51.1 – 10.89.51.12610.89.51.127
10410.89.51.128/2510.89.51.129 – 10.89.51.25410.89.51.255
10510.89.52.0/2510.89.52.1 – 10.89.52.12610.89.52.127
10610.89.52.128/2510.89.52.129 – 10.89.52.25410.89.52.255
10710.89.53.0/2510.89.53.1 – 10.89.53.12610.89.53.127
10810.89.53.128/2510.89.53.129 – 10.89.53.25410.89.53.255
10910.89.54.0/2510.89.54.1 – 10.89.54.12610.89.54.127
11010.89.54.128/2510.89.54.129 – 10.89.54.25410.89.54.255
11110.89.55.0/2510.89.55.1 – 10.89.55.12610.89.55.127
11210.89.55.128/2510.89.55.129 – 10.89.55.25410.89.55.255
11310.89.56.0/2510.89.56.1 – 10.89.56.12610.89.56.127
11410.89.56.128/2510.89.56.129 – 10.89.56.25410.89.56.255
11510.89.57.0/2510.89.57.1 – 10.89.57.12610.89.57.127
11610.89.57.128/2510.89.57.129 – 10.89.57.25410.89.57.255
11710.89.58.0/2510.89.58.1 – 10.89.58.12610.89.58.127
11810.89.58.128/2510.89.58.129 – 10.89.58.25410.89.58.255
11910.89.59.0/2510.89.59.1 – 10.89.59.12610.89.59.127
12010.89.59.128/2510.89.59.129 – 10.89.59.25410.89.59.255
12110.89.60.0/2510.89.60.1 – 10.89.60.12610.89.60.127
12210.89.60.128/2510.89.60.129 – 10.89.60.25410.89.60.255
12310.89.61.0/2510.89.61.1 – 10.89.61.12610.89.61.127
12410.89.61.128/2510.89.61.129 – 10.89.61.25410.89.61.255
12510.89.62.0/2510.89.62.1 – 10.89.62.12610.89.62.127
12610.89.62.128/2510.89.62.129 – 10.89.62.25410.89.62.255
12710.89.63.0/2510.89.63.1 – 10.89.63.12610.89.63.127
12810.89.63.128/2510.89.63.129 – 10.89.63.25410.89.63.255
12910.89.64.0/2510.89.64.1 – 10.89.64.12610.89.64.127
13010.89.64.128/2510.89.64.129 – 10.89.64.25410.89.64.255
13110.89.65.0/2510.89.65.1 – 10.89.65.12610.89.65.127
13210.89.65.128/2510.89.65.129 – 10.89.65.25410.89.65.255
13310.89.66.0/2510.89.66.1 – 10.89.66.12610.89.66.127
13410.89.66.128/2510.89.66.129 – 10.89.66.25410.89.66.255
13510.89.67.0/2510.89.67.1 – 10.89.67.12610.89.67.127
13610.89.67.128/2510.89.67.129 – 10.89.67.25410.89.67.255
13710.89.68.0/2510.89.68.1 – 10.89.68.12610.89.68.127
13810.89.68.128/2510.89.68.129 – 10.89.68.25410.89.68.255
13910.89.69.0/2510.89.69.1 – 10.89.69.12610.89.69.127
14010.89.69.128/2510.89.69.129 – 10.89.69.25410.89.69.255
14110.89.70.0/2510.89.70.1 – 10.89.70.12610.89.70.127
14210.89.70.128/2510.89.70.129 – 10.89.70.25410.89.70.255
14310.89.71.0/2510.89.71.1 – 10.89.71.12610.89.71.127
14410.89.71.128/2510.89.71.129 – 10.89.71.25410.89.71.255
14510.89.72.0/2510.89.72.1 – 10.89.72.12610.89.72.127
14610.89.72.128/2510.89.72.129 – 10.89.72.25410.89.72.255
14710.89.73.0/2510.89.73.1 – 10.89.73.12610.89.73.127
14810.89.73.128/2510.89.73.129 – 10.89.73.25410.89.73.255
14910.89.74.0/2510.89.74.1 – 10.89.74.12610.89.74.127
15010.89.74.128/2510.89.74.129 – 10.89.74.25410.89.74.255
15110.89.75.0/2510.89.75.1 – 10.89.75.12610.89.75.127
15210.89.75.128/2510.89.75.129 – 10.89.75.25410.89.75.255
15310.89.76.0/2510.89.76.1 – 10.89.76.12610.89.76.127
15410.89.76.128/2510.89.76.129 – 10.89.76.25410.89.76.255
15510.89.77.0/2510.89.77.1 – 10.89.77.12610.89.77.127
15610.89.77.128/2510.89.77.129 – 10.89.77.25410.89.77.255
15710.89.78.0/2510.89.78.1 – 10.89.78.12610.89.78.127
15810.89.78.128/2510.89.78.129 – 10.89.78.25410.89.78.255
15910.89.79.0/2510.89.79.1 – 10.89.79.12610.89.79.127
16010.89.79.128/2510.89.79.129 – 10.89.79.25410.89.79.255
16110.89.80.0/2510.89.80.1 – 10.89.80.12610.89.80.127
16210.89.80.128/2510.89.80.129 – 10.89.80.25410.89.80.255
16310.89.81.0/2510.89.81.1 – 10.89.81.12610.89.81.127
16410.89.81.128/2510.89.81.129 – 10.89.81.25410.89.81.255
16510.89.82.0/2510.89.82.1 – 10.89.82.12610.89.82.127
16610.89.82.128/2510.89.82.129 – 10.89.82.25410.89.82.255
16710.89.83.0/2510.89.83.1 – 10.89.83.12610.89.83.127
16810.89.83.128/2510.89.83.129 – 10.89.83.25410.89.83.255
16910.89.84.0/2510.89.84.1 – 10.89.84.12610.89.84.127
17010.89.84.128/2510.89.84.129 – 10.89.84.25410.89.84.255
17110.89.85.0/2510.89.85.1 – 10.89.85.12610.89.85.127
17210.89.85.128/2510.89.85.129 – 10.89.85.25410.89.85.255
17310.89.86.0/2510.89.86.1 – 10.89.86.12610.89.86.127
17410.89.86.128/2510.89.86.129 – 10.89.86.25410.89.86.255
17510.89.87.0/2510.89.87.1 – 10.89.87.12610.89.87.127
17610.89.87.128/2510.89.87.129 – 10.89.87.25410.89.87.255
17710.89.88.0/2510.89.88.1 – 10.89.88.12610.89.88.127
17810.89.88.128/2510.89.88.129 – 10.89.88.25410.89.88.255
17910.89.89.0/2510.89.89.1 – 10.89.89.12610.89.89.127
18010.89.89.128/2510.89.89.129 – 10.89.89.25410.89.89.255
18110.89.90.0/2510.89.90.1 – 10.89.90.12610.89.90.127
18210.89.90.128/2510.89.90.129 – 10.89.90.25410.89.90.255
18310.89.91.0/2510.89.91.1 – 10.89.91.12610.89.91.127
18410.89.91.128/2510.89.91.129 – 10.89.91.25410.89.91.255
18510.89.92.0/2510.89.92.1 – 10.89.92.12610.89.92.127
18610.89.92.128/2510.89.92.129 – 10.89.92.25410.89.92.255
18710.89.93.0/2510.89.93.1 – 10.89.93.12610.89.93.127
18810.89.93.128/2510.89.93.129 – 10.89.93.25410.89.93.255
18910.89.94.0/2510.89.94.1 – 10.89.94.12610.89.94.127
19010.89.94.128/2510.89.94.129 – 10.89.94.25410.89.94.255
19110.89.95.0/2510.89.95.1 – 10.89.95.12610.89.95.127
19210.89.95.128/2510.89.95.129 – 10.89.95.25410.89.95.255
19310.89.96.0/2510.89.96.1 – 10.89.96.12610.89.96.127
19410.89.96.128/2510.89.96.129 – 10.89.96.25410.89.96.255
19510.89.97.0/2510.89.97.1 – 10.89.97.12610.89.97.127
19610.89.97.128/2510.89.97.129 – 10.89.97.25410.89.97.255
19710.89.98.0/2510.89.98.1 – 10.89.98.12610.89.98.127
19810.89.98.128/2510.89.98.129 – 10.89.98.25410.89.98.255
19910.89.99.0/2510.89.99.1 – 10.89.99.12610.89.99.127
20010.89.99.128/2510.89.99.129 – 10.89.99.25410.89.99.255
20110.89.100.0/2510.89.100.1 – 10.89.100.12610.89.100.127
20210.89.100.128/2510.89.100.129 – 10.89.100.25410.89.100.255
20310.89.101.0/2510.89.101.1 – 10.89.101.12610.89.101.127
20410.89.101.128/2510.89.101.129 – 10.89.101.25410.89.101.255
20510.89.102.0/2510.89.102.1 – 10.89.102.12610.89.102.127
20610.89.102.128/2510.89.102.129 – 10.89.102.25410.89.102.255
20710.89.103.0/2510.89.103.1 – 10.89.103.12610.89.103.127
20810.89.103.128/2510.89.103.129 – 10.89.103.25410.89.103.255
20910.89.104.0/2510.89.104.1 – 10.89.104.12610.89.104.127
21010.89.104.128/2510.89.104.129 – 10.89.104.25410.89.104.255
21110.89.105.0/2510.89.105.1 – 10.89.105.12610.89.105.127
21210.89.105.128/2510.89.105.129 – 10.89.105.25410.89.105.255
21310.89.106.0/2510.89.106.1 – 10.89.106.12610.89.106.127
21410.89.106.128/2510.89.106.129 – 10.89.106.25410.89.106.255
21510.89.107.0/2510.89.107.1 – 10.89.107.12610.89.107.127
21610.89.107.128/2510.89.107.129 – 10.89.107.25410.89.107.255
21710.89.108.0/2510.89.108.1 – 10.89.108.12610.89.108.127
21810.89.108.128/2510.89.108.129 – 10.89.108.25410.89.108.255
21910.89.109.0/2510.89.109.1 – 10.89.109.12610.89.109.127
22010.89.109.128/2510.89.109.129 – 10.89.109.25410.89.109.255
22110.89.110.0/2510.89.110.1 – 10.89.110.12610.89.110.127
22210.89.110.128/2510.89.110.129 – 10.89.110.25410.89.110.255
22310.89.111.0/2510.89.111.1 – 10.89.111.12610.89.111.127
22410.89.111.128/2510.89.111.129 – 10.89.111.25410.89.111.255
22510.89.112.0/2510.89.112.1 – 10.89.112.12610.89.112.127
22610.89.112.128/2510.89.112.129 – 10.89.112.25410.89.112.255
22710.89.113.0/2510.89.113.1 – 10.89.113.12610.89.113.127
22810.89.113.128/2510.89.113.129 – 10.89.113.25410.89.113.255
22910.89.114.0/2510.89.114.1 – 10.89.114.12610.89.114.127
23010.89.114.128/2510.89.114.129 – 10.89.114.25410.89.114.255
23110.89.115.0/2510.89.115.1 – 10.89.115.12610.89.115.127
23210.89.115.128/2510.89.115.129 – 10.89.115.25410.89.115.255
23310.89.116.0/2510.89.116.1 – 10.89.116.12610.89.116.127
23410.89.116.128/2510.89.116.129 – 10.89.116.25410.89.116.255
23510.89.117.0/2510.89.117.1 – 10.89.117.12610.89.117.127
23610.89.117.128/2510.89.117.129 – 10.89.117.25410.89.117.255
23710.89.118.0/2510.89.118.1 – 10.89.118.12610.89.118.127
23810.89.118.128/2510.89.118.129 – 10.89.118.25410.89.118.255
23910.89.119.0/2510.89.119.1 – 10.89.119.12610.89.119.127
24010.89.119.128/2510.89.119.129 – 10.89.119.25410.89.119.255
24110.89.120.0/2510.89.120.1 – 10.89.120.12610.89.120.127
24210.89.120.128/2510.89.120.129 – 10.89.120.25410.89.120.255
24310.89.121.0/2510.89.121.1 – 10.89.121.12610.89.121.127
24410.89.121.128/2510.89.121.129 – 10.89.121.25410.89.121.255
24510.89.122.0/2510.89.122.1 – 10.89.122.12610.89.122.127
24610.89.122.128/2510.89.122.129 – 10.89.122.25410.89.122.255
24710.89.123.0/2510.89.123.1 – 10.89.123.12610.89.123.127
24810.89.123.128/2510.89.123.129 – 10.89.123.25410.89.123.255
24910.89.124.0/2510.89.124.1 – 10.89.124.12610.89.124.127
25010.89.124.128/2510.89.124.129 – 10.89.124.25410.89.124.255
25110.89.125.0/2510.89.125.1 – 10.89.125.12610.89.125.127
25210.89.125.128/2510.89.125.129 – 10.89.125.25410.89.125.255
25310.89.126.0/2510.89.126.1 – 10.89.126.12610.89.126.127
25410.89.126.128/2510.89.126.129 – 10.89.126.25410.89.126.255
25510.89.127.0/2510.89.127.1 – 10.89.127.12610.89.127.127
25610.89.127.128/2510.89.127.129 – 10.89.127.25410.89.127.255

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 →