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)10.57.0.0/16
network10.57.0.0/16
broadcast10.57.255.255
first host10.57.0.1
last host10.57.255.254
subnet mask255.255.0.0
wildcard0.0.255.255
addresses65,536
usable hosts65,534
classA
ipcalc 10.57.0.0/16
address00001010.00111001.00000000.00000000
subnet mask11111111.11111111.00000000.00000000
network00001010.00111001.00000000.00000000
broadcast00001010.00111001.11111111.11111111
green = network part, grey = host part
hex0x0a390000
decimal171507712
reverse dns0.0.57.10.in-addr.arpa
ipv4-mapped::ffff:a39:0

/16 split into /24 · 256 subnets

close ×
#networkhost rangebroadcast
110.57.0.0/2410.57.0.1 – 10.57.0.25410.57.0.255
210.57.1.0/2410.57.1.1 – 10.57.1.25410.57.1.255
310.57.2.0/2410.57.2.1 – 10.57.2.25410.57.2.255
410.57.3.0/2410.57.3.1 – 10.57.3.25410.57.3.255
510.57.4.0/2410.57.4.1 – 10.57.4.25410.57.4.255
610.57.5.0/2410.57.5.1 – 10.57.5.25410.57.5.255
710.57.6.0/2410.57.6.1 – 10.57.6.25410.57.6.255
810.57.7.0/2410.57.7.1 – 10.57.7.25410.57.7.255
910.57.8.0/2410.57.8.1 – 10.57.8.25410.57.8.255
1010.57.9.0/2410.57.9.1 – 10.57.9.25410.57.9.255
1110.57.10.0/2410.57.10.1 – 10.57.10.25410.57.10.255
1210.57.11.0/2410.57.11.1 – 10.57.11.25410.57.11.255
1310.57.12.0/2410.57.12.1 – 10.57.12.25410.57.12.255
1410.57.13.0/2410.57.13.1 – 10.57.13.25410.57.13.255
1510.57.14.0/2410.57.14.1 – 10.57.14.25410.57.14.255
1610.57.15.0/2410.57.15.1 – 10.57.15.25410.57.15.255
1710.57.16.0/2410.57.16.1 – 10.57.16.25410.57.16.255
1810.57.17.0/2410.57.17.1 – 10.57.17.25410.57.17.255
1910.57.18.0/2410.57.18.1 – 10.57.18.25410.57.18.255
2010.57.19.0/2410.57.19.1 – 10.57.19.25410.57.19.255
2110.57.20.0/2410.57.20.1 – 10.57.20.25410.57.20.255
2210.57.21.0/2410.57.21.1 – 10.57.21.25410.57.21.255
2310.57.22.0/2410.57.22.1 – 10.57.22.25410.57.22.255
2410.57.23.0/2410.57.23.1 – 10.57.23.25410.57.23.255
2510.57.24.0/2410.57.24.1 – 10.57.24.25410.57.24.255
2610.57.25.0/2410.57.25.1 – 10.57.25.25410.57.25.255
2710.57.26.0/2410.57.26.1 – 10.57.26.25410.57.26.255
2810.57.27.0/2410.57.27.1 – 10.57.27.25410.57.27.255
2910.57.28.0/2410.57.28.1 – 10.57.28.25410.57.28.255
3010.57.29.0/2410.57.29.1 – 10.57.29.25410.57.29.255
3110.57.30.0/2410.57.30.1 – 10.57.30.25410.57.30.255
3210.57.31.0/2410.57.31.1 – 10.57.31.25410.57.31.255
3310.57.32.0/2410.57.32.1 – 10.57.32.25410.57.32.255
3410.57.33.0/2410.57.33.1 – 10.57.33.25410.57.33.255
3510.57.34.0/2410.57.34.1 – 10.57.34.25410.57.34.255
3610.57.35.0/2410.57.35.1 – 10.57.35.25410.57.35.255
3710.57.36.0/2410.57.36.1 – 10.57.36.25410.57.36.255
3810.57.37.0/2410.57.37.1 – 10.57.37.25410.57.37.255
3910.57.38.0/2410.57.38.1 – 10.57.38.25410.57.38.255
4010.57.39.0/2410.57.39.1 – 10.57.39.25410.57.39.255
4110.57.40.0/2410.57.40.1 – 10.57.40.25410.57.40.255
4210.57.41.0/2410.57.41.1 – 10.57.41.25410.57.41.255
4310.57.42.0/2410.57.42.1 – 10.57.42.25410.57.42.255
4410.57.43.0/2410.57.43.1 – 10.57.43.25410.57.43.255
4510.57.44.0/2410.57.44.1 – 10.57.44.25410.57.44.255
4610.57.45.0/2410.57.45.1 – 10.57.45.25410.57.45.255
4710.57.46.0/2410.57.46.1 – 10.57.46.25410.57.46.255
4810.57.47.0/2410.57.47.1 – 10.57.47.25410.57.47.255
4910.57.48.0/2410.57.48.1 – 10.57.48.25410.57.48.255
5010.57.49.0/2410.57.49.1 – 10.57.49.25410.57.49.255
5110.57.50.0/2410.57.50.1 – 10.57.50.25410.57.50.255
5210.57.51.0/2410.57.51.1 – 10.57.51.25410.57.51.255
5310.57.52.0/2410.57.52.1 – 10.57.52.25410.57.52.255
5410.57.53.0/2410.57.53.1 – 10.57.53.25410.57.53.255
5510.57.54.0/2410.57.54.1 – 10.57.54.25410.57.54.255
5610.57.55.0/2410.57.55.1 – 10.57.55.25410.57.55.255
5710.57.56.0/2410.57.56.1 – 10.57.56.25410.57.56.255
5810.57.57.0/2410.57.57.1 – 10.57.57.25410.57.57.255
5910.57.58.0/2410.57.58.1 – 10.57.58.25410.57.58.255
6010.57.59.0/2410.57.59.1 – 10.57.59.25410.57.59.255
6110.57.60.0/2410.57.60.1 – 10.57.60.25410.57.60.255
6210.57.61.0/2410.57.61.1 – 10.57.61.25410.57.61.255
6310.57.62.0/2410.57.62.1 – 10.57.62.25410.57.62.255
6410.57.63.0/2410.57.63.1 – 10.57.63.25410.57.63.255
6510.57.64.0/2410.57.64.1 – 10.57.64.25410.57.64.255
6610.57.65.0/2410.57.65.1 – 10.57.65.25410.57.65.255
6710.57.66.0/2410.57.66.1 – 10.57.66.25410.57.66.255
6810.57.67.0/2410.57.67.1 – 10.57.67.25410.57.67.255
6910.57.68.0/2410.57.68.1 – 10.57.68.25410.57.68.255
7010.57.69.0/2410.57.69.1 – 10.57.69.25410.57.69.255
7110.57.70.0/2410.57.70.1 – 10.57.70.25410.57.70.255
7210.57.71.0/2410.57.71.1 – 10.57.71.25410.57.71.255
7310.57.72.0/2410.57.72.1 – 10.57.72.25410.57.72.255
7410.57.73.0/2410.57.73.1 – 10.57.73.25410.57.73.255
7510.57.74.0/2410.57.74.1 – 10.57.74.25410.57.74.255
7610.57.75.0/2410.57.75.1 – 10.57.75.25410.57.75.255
7710.57.76.0/2410.57.76.1 – 10.57.76.25410.57.76.255
7810.57.77.0/2410.57.77.1 – 10.57.77.25410.57.77.255
7910.57.78.0/2410.57.78.1 – 10.57.78.25410.57.78.255
8010.57.79.0/2410.57.79.1 – 10.57.79.25410.57.79.255
8110.57.80.0/2410.57.80.1 – 10.57.80.25410.57.80.255
8210.57.81.0/2410.57.81.1 – 10.57.81.25410.57.81.255
8310.57.82.0/2410.57.82.1 – 10.57.82.25410.57.82.255
8410.57.83.0/2410.57.83.1 – 10.57.83.25410.57.83.255
8510.57.84.0/2410.57.84.1 – 10.57.84.25410.57.84.255
8610.57.85.0/2410.57.85.1 – 10.57.85.25410.57.85.255
8710.57.86.0/2410.57.86.1 – 10.57.86.25410.57.86.255
8810.57.87.0/2410.57.87.1 – 10.57.87.25410.57.87.255
8910.57.88.0/2410.57.88.1 – 10.57.88.25410.57.88.255
9010.57.89.0/2410.57.89.1 – 10.57.89.25410.57.89.255
9110.57.90.0/2410.57.90.1 – 10.57.90.25410.57.90.255
9210.57.91.0/2410.57.91.1 – 10.57.91.25410.57.91.255
9310.57.92.0/2410.57.92.1 – 10.57.92.25410.57.92.255
9410.57.93.0/2410.57.93.1 – 10.57.93.25410.57.93.255
9510.57.94.0/2410.57.94.1 – 10.57.94.25410.57.94.255
9610.57.95.0/2410.57.95.1 – 10.57.95.25410.57.95.255
9710.57.96.0/2410.57.96.1 – 10.57.96.25410.57.96.255
9810.57.97.0/2410.57.97.1 – 10.57.97.25410.57.97.255
9910.57.98.0/2410.57.98.1 – 10.57.98.25410.57.98.255
10010.57.99.0/2410.57.99.1 – 10.57.99.25410.57.99.255
10110.57.100.0/2410.57.100.1 – 10.57.100.25410.57.100.255
10210.57.101.0/2410.57.101.1 – 10.57.101.25410.57.101.255
10310.57.102.0/2410.57.102.1 – 10.57.102.25410.57.102.255
10410.57.103.0/2410.57.103.1 – 10.57.103.25410.57.103.255
10510.57.104.0/2410.57.104.1 – 10.57.104.25410.57.104.255
10610.57.105.0/2410.57.105.1 – 10.57.105.25410.57.105.255
10710.57.106.0/2410.57.106.1 – 10.57.106.25410.57.106.255
10810.57.107.0/2410.57.107.1 – 10.57.107.25410.57.107.255
10910.57.108.0/2410.57.108.1 – 10.57.108.25410.57.108.255
11010.57.109.0/2410.57.109.1 – 10.57.109.25410.57.109.255
11110.57.110.0/2410.57.110.1 – 10.57.110.25410.57.110.255
11210.57.111.0/2410.57.111.1 – 10.57.111.25410.57.111.255
11310.57.112.0/2410.57.112.1 – 10.57.112.25410.57.112.255
11410.57.113.0/2410.57.113.1 – 10.57.113.25410.57.113.255
11510.57.114.0/2410.57.114.1 – 10.57.114.25410.57.114.255
11610.57.115.0/2410.57.115.1 – 10.57.115.25410.57.115.255
11710.57.116.0/2410.57.116.1 – 10.57.116.25410.57.116.255
11810.57.117.0/2410.57.117.1 – 10.57.117.25410.57.117.255
11910.57.118.0/2410.57.118.1 – 10.57.118.25410.57.118.255
12010.57.119.0/2410.57.119.1 – 10.57.119.25410.57.119.255
12110.57.120.0/2410.57.120.1 – 10.57.120.25410.57.120.255
12210.57.121.0/2410.57.121.1 – 10.57.121.25410.57.121.255
12310.57.122.0/2410.57.122.1 – 10.57.122.25410.57.122.255
12410.57.123.0/2410.57.123.1 – 10.57.123.25410.57.123.255
12510.57.124.0/2410.57.124.1 – 10.57.124.25410.57.124.255
12610.57.125.0/2410.57.125.1 – 10.57.125.25410.57.125.255
12710.57.126.0/2410.57.126.1 – 10.57.126.25410.57.126.255
12810.57.127.0/2410.57.127.1 – 10.57.127.25410.57.127.255
12910.57.128.0/2410.57.128.1 – 10.57.128.25410.57.128.255
13010.57.129.0/2410.57.129.1 – 10.57.129.25410.57.129.255
13110.57.130.0/2410.57.130.1 – 10.57.130.25410.57.130.255
13210.57.131.0/2410.57.131.1 – 10.57.131.25410.57.131.255
13310.57.132.0/2410.57.132.1 – 10.57.132.25410.57.132.255
13410.57.133.0/2410.57.133.1 – 10.57.133.25410.57.133.255
13510.57.134.0/2410.57.134.1 – 10.57.134.25410.57.134.255
13610.57.135.0/2410.57.135.1 – 10.57.135.25410.57.135.255
13710.57.136.0/2410.57.136.1 – 10.57.136.25410.57.136.255
13810.57.137.0/2410.57.137.1 – 10.57.137.25410.57.137.255
13910.57.138.0/2410.57.138.1 – 10.57.138.25410.57.138.255
14010.57.139.0/2410.57.139.1 – 10.57.139.25410.57.139.255
14110.57.140.0/2410.57.140.1 – 10.57.140.25410.57.140.255
14210.57.141.0/2410.57.141.1 – 10.57.141.25410.57.141.255
14310.57.142.0/2410.57.142.1 – 10.57.142.25410.57.142.255
14410.57.143.0/2410.57.143.1 – 10.57.143.25410.57.143.255
14510.57.144.0/2410.57.144.1 – 10.57.144.25410.57.144.255
14610.57.145.0/2410.57.145.1 – 10.57.145.25410.57.145.255
14710.57.146.0/2410.57.146.1 – 10.57.146.25410.57.146.255
14810.57.147.0/2410.57.147.1 – 10.57.147.25410.57.147.255
14910.57.148.0/2410.57.148.1 – 10.57.148.25410.57.148.255
15010.57.149.0/2410.57.149.1 – 10.57.149.25410.57.149.255
15110.57.150.0/2410.57.150.1 – 10.57.150.25410.57.150.255
15210.57.151.0/2410.57.151.1 – 10.57.151.25410.57.151.255
15310.57.152.0/2410.57.152.1 – 10.57.152.25410.57.152.255
15410.57.153.0/2410.57.153.1 – 10.57.153.25410.57.153.255
15510.57.154.0/2410.57.154.1 – 10.57.154.25410.57.154.255
15610.57.155.0/2410.57.155.1 – 10.57.155.25410.57.155.255
15710.57.156.0/2410.57.156.1 – 10.57.156.25410.57.156.255
15810.57.157.0/2410.57.157.1 – 10.57.157.25410.57.157.255
15910.57.158.0/2410.57.158.1 – 10.57.158.25410.57.158.255
16010.57.159.0/2410.57.159.1 – 10.57.159.25410.57.159.255
16110.57.160.0/2410.57.160.1 – 10.57.160.25410.57.160.255
16210.57.161.0/2410.57.161.1 – 10.57.161.25410.57.161.255
16310.57.162.0/2410.57.162.1 – 10.57.162.25410.57.162.255
16410.57.163.0/2410.57.163.1 – 10.57.163.25410.57.163.255
16510.57.164.0/2410.57.164.1 – 10.57.164.25410.57.164.255
16610.57.165.0/2410.57.165.1 – 10.57.165.25410.57.165.255
16710.57.166.0/2410.57.166.1 – 10.57.166.25410.57.166.255
16810.57.167.0/2410.57.167.1 – 10.57.167.25410.57.167.255
16910.57.168.0/2410.57.168.1 – 10.57.168.25410.57.168.255
17010.57.169.0/2410.57.169.1 – 10.57.169.25410.57.169.255
17110.57.170.0/2410.57.170.1 – 10.57.170.25410.57.170.255
17210.57.171.0/2410.57.171.1 – 10.57.171.25410.57.171.255
17310.57.172.0/2410.57.172.1 – 10.57.172.25410.57.172.255
17410.57.173.0/2410.57.173.1 – 10.57.173.25410.57.173.255
17510.57.174.0/2410.57.174.1 – 10.57.174.25410.57.174.255
17610.57.175.0/2410.57.175.1 – 10.57.175.25410.57.175.255
17710.57.176.0/2410.57.176.1 – 10.57.176.25410.57.176.255
17810.57.177.0/2410.57.177.1 – 10.57.177.25410.57.177.255
17910.57.178.0/2410.57.178.1 – 10.57.178.25410.57.178.255
18010.57.179.0/2410.57.179.1 – 10.57.179.25410.57.179.255
18110.57.180.0/2410.57.180.1 – 10.57.180.25410.57.180.255
18210.57.181.0/2410.57.181.1 – 10.57.181.25410.57.181.255
18310.57.182.0/2410.57.182.1 – 10.57.182.25410.57.182.255
18410.57.183.0/2410.57.183.1 – 10.57.183.25410.57.183.255
18510.57.184.0/2410.57.184.1 – 10.57.184.25410.57.184.255
18610.57.185.0/2410.57.185.1 – 10.57.185.25410.57.185.255
18710.57.186.0/2410.57.186.1 – 10.57.186.25410.57.186.255
18810.57.187.0/2410.57.187.1 – 10.57.187.25410.57.187.255
18910.57.188.0/2410.57.188.1 – 10.57.188.25410.57.188.255
19010.57.189.0/2410.57.189.1 – 10.57.189.25410.57.189.255
19110.57.190.0/2410.57.190.1 – 10.57.190.25410.57.190.255
19210.57.191.0/2410.57.191.1 – 10.57.191.25410.57.191.255
19310.57.192.0/2410.57.192.1 – 10.57.192.25410.57.192.255
19410.57.193.0/2410.57.193.1 – 10.57.193.25410.57.193.255
19510.57.194.0/2410.57.194.1 – 10.57.194.25410.57.194.255
19610.57.195.0/2410.57.195.1 – 10.57.195.25410.57.195.255
19710.57.196.0/2410.57.196.1 – 10.57.196.25410.57.196.255
19810.57.197.0/2410.57.197.1 – 10.57.197.25410.57.197.255
19910.57.198.0/2410.57.198.1 – 10.57.198.25410.57.198.255
20010.57.199.0/2410.57.199.1 – 10.57.199.25410.57.199.255
20110.57.200.0/2410.57.200.1 – 10.57.200.25410.57.200.255
20210.57.201.0/2410.57.201.1 – 10.57.201.25410.57.201.255
20310.57.202.0/2410.57.202.1 – 10.57.202.25410.57.202.255
20410.57.203.0/2410.57.203.1 – 10.57.203.25410.57.203.255
20510.57.204.0/2410.57.204.1 – 10.57.204.25410.57.204.255
20610.57.205.0/2410.57.205.1 – 10.57.205.25410.57.205.255
20710.57.206.0/2410.57.206.1 – 10.57.206.25410.57.206.255
20810.57.207.0/2410.57.207.1 – 10.57.207.25410.57.207.255
20910.57.208.0/2410.57.208.1 – 10.57.208.25410.57.208.255
21010.57.209.0/2410.57.209.1 – 10.57.209.25410.57.209.255
21110.57.210.0/2410.57.210.1 – 10.57.210.25410.57.210.255
21210.57.211.0/2410.57.211.1 – 10.57.211.25410.57.211.255
21310.57.212.0/2410.57.212.1 – 10.57.212.25410.57.212.255
21410.57.213.0/2410.57.213.1 – 10.57.213.25410.57.213.255
21510.57.214.0/2410.57.214.1 – 10.57.214.25410.57.214.255
21610.57.215.0/2410.57.215.1 – 10.57.215.25410.57.215.255
21710.57.216.0/2410.57.216.1 – 10.57.216.25410.57.216.255
21810.57.217.0/2410.57.217.1 – 10.57.217.25410.57.217.255
21910.57.218.0/2410.57.218.1 – 10.57.218.25410.57.218.255
22010.57.219.0/2410.57.219.1 – 10.57.219.25410.57.219.255
22110.57.220.0/2410.57.220.1 – 10.57.220.25410.57.220.255
22210.57.221.0/2410.57.221.1 – 10.57.221.25410.57.221.255
22310.57.222.0/2410.57.222.1 – 10.57.222.25410.57.222.255
22410.57.223.0/2410.57.223.1 – 10.57.223.25410.57.223.255
22510.57.224.0/2410.57.224.1 – 10.57.224.25410.57.224.255
22610.57.225.0/2410.57.225.1 – 10.57.225.25410.57.225.255
22710.57.226.0/2410.57.226.1 – 10.57.226.25410.57.226.255
22810.57.227.0/2410.57.227.1 – 10.57.227.25410.57.227.255
22910.57.228.0/2410.57.228.1 – 10.57.228.25410.57.228.255
23010.57.229.0/2410.57.229.1 – 10.57.229.25410.57.229.255
23110.57.230.0/2410.57.230.1 – 10.57.230.25410.57.230.255
23210.57.231.0/2410.57.231.1 – 10.57.231.25410.57.231.255
23310.57.232.0/2410.57.232.1 – 10.57.232.25410.57.232.255
23410.57.233.0/2410.57.233.1 – 10.57.233.25410.57.233.255
23510.57.234.0/2410.57.234.1 – 10.57.234.25410.57.234.255
23610.57.235.0/2410.57.235.1 – 10.57.235.25410.57.235.255
23710.57.236.0/2410.57.236.1 – 10.57.236.25410.57.236.255
23810.57.237.0/2410.57.237.1 – 10.57.237.25410.57.237.255
23910.57.238.0/2410.57.238.1 – 10.57.238.25410.57.238.255
24010.57.239.0/2410.57.239.1 – 10.57.239.25410.57.239.255
24110.57.240.0/2410.57.240.1 – 10.57.240.25410.57.240.255
24210.57.241.0/2410.57.241.1 – 10.57.241.25410.57.241.255
24310.57.242.0/2410.57.242.1 – 10.57.242.25410.57.242.255
24410.57.243.0/2410.57.243.1 – 10.57.243.25410.57.243.255
24510.57.244.0/2410.57.244.1 – 10.57.244.25410.57.244.255
24610.57.245.0/2410.57.245.1 – 10.57.245.25410.57.245.255
24710.57.246.0/2410.57.246.1 – 10.57.246.25410.57.246.255
24810.57.247.0/2410.57.247.1 – 10.57.247.25410.57.247.255
24910.57.248.0/2410.57.248.1 – 10.57.248.25410.57.248.255
25010.57.249.0/2410.57.249.1 – 10.57.249.25410.57.249.255
25110.57.250.0/2410.57.250.1 – 10.57.250.25410.57.250.255
25210.57.251.0/2410.57.251.1 – 10.57.251.25410.57.251.255
25310.57.252.0/2410.57.252.1 – 10.57.252.25410.57.252.255
25410.57.253.0/2410.57.253.1 – 10.57.253.25410.57.253.255
25510.57.254.0/2410.57.254.1 – 10.57.254.25410.57.254.255
25610.57.255.0/2410.57.255.1 – 10.57.255.25410.57.255.255
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 →