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)10.72.128.0/17
network10.72.128.0/17
broadcast10.72.255.255
first host10.72.128.1
last host10.72.255.254
subnet mask255.255.128.0
wildcard0.0.127.255
addresses32,768
usable hosts32,766
classA
ipcalc 10.72.128.0/17
address00001010.01001000.10000000.00000000
subnet mask11111111.11111111.10000000.00000000
network00001010.01001000.10000000.00000000
broadcast00001010.01001000.11111111.11111111
green = network part, grey = host part
hex0x0a488000
decimal172523520
reverse dns0.128.72.10.in-addr.arpa
ipv4-mapped::ffff:a48:8000

/17 split into /26 · 512 subnets

close ×
#networkhost rangebroadcast
110.72.128.0/2610.72.128.1 – 10.72.128.6210.72.128.63
210.72.128.64/2610.72.128.65 – 10.72.128.12610.72.128.127
310.72.128.128/2610.72.128.129 – 10.72.128.19010.72.128.191
410.72.128.192/2610.72.128.193 – 10.72.128.25410.72.128.255
510.72.129.0/2610.72.129.1 – 10.72.129.6210.72.129.63
610.72.129.64/2610.72.129.65 – 10.72.129.12610.72.129.127
710.72.129.128/2610.72.129.129 – 10.72.129.19010.72.129.191
810.72.129.192/2610.72.129.193 – 10.72.129.25410.72.129.255
910.72.130.0/2610.72.130.1 – 10.72.130.6210.72.130.63
1010.72.130.64/2610.72.130.65 – 10.72.130.12610.72.130.127
1110.72.130.128/2610.72.130.129 – 10.72.130.19010.72.130.191
1210.72.130.192/2610.72.130.193 – 10.72.130.25410.72.130.255
1310.72.131.0/2610.72.131.1 – 10.72.131.6210.72.131.63
1410.72.131.64/2610.72.131.65 – 10.72.131.12610.72.131.127
1510.72.131.128/2610.72.131.129 – 10.72.131.19010.72.131.191
1610.72.131.192/2610.72.131.193 – 10.72.131.25410.72.131.255
1710.72.132.0/2610.72.132.1 – 10.72.132.6210.72.132.63
1810.72.132.64/2610.72.132.65 – 10.72.132.12610.72.132.127
1910.72.132.128/2610.72.132.129 – 10.72.132.19010.72.132.191
2010.72.132.192/2610.72.132.193 – 10.72.132.25410.72.132.255
2110.72.133.0/2610.72.133.1 – 10.72.133.6210.72.133.63
2210.72.133.64/2610.72.133.65 – 10.72.133.12610.72.133.127
2310.72.133.128/2610.72.133.129 – 10.72.133.19010.72.133.191
2410.72.133.192/2610.72.133.193 – 10.72.133.25410.72.133.255
2510.72.134.0/2610.72.134.1 – 10.72.134.6210.72.134.63
2610.72.134.64/2610.72.134.65 – 10.72.134.12610.72.134.127
2710.72.134.128/2610.72.134.129 – 10.72.134.19010.72.134.191
2810.72.134.192/2610.72.134.193 – 10.72.134.25410.72.134.255
2910.72.135.0/2610.72.135.1 – 10.72.135.6210.72.135.63
3010.72.135.64/2610.72.135.65 – 10.72.135.12610.72.135.127
3110.72.135.128/2610.72.135.129 – 10.72.135.19010.72.135.191
3210.72.135.192/2610.72.135.193 – 10.72.135.25410.72.135.255
3310.72.136.0/2610.72.136.1 – 10.72.136.6210.72.136.63
3410.72.136.64/2610.72.136.65 – 10.72.136.12610.72.136.127
3510.72.136.128/2610.72.136.129 – 10.72.136.19010.72.136.191
3610.72.136.192/2610.72.136.193 – 10.72.136.25410.72.136.255
3710.72.137.0/2610.72.137.1 – 10.72.137.6210.72.137.63
3810.72.137.64/2610.72.137.65 – 10.72.137.12610.72.137.127
3910.72.137.128/2610.72.137.129 – 10.72.137.19010.72.137.191
4010.72.137.192/2610.72.137.193 – 10.72.137.25410.72.137.255
4110.72.138.0/2610.72.138.1 – 10.72.138.6210.72.138.63
4210.72.138.64/2610.72.138.65 – 10.72.138.12610.72.138.127
4310.72.138.128/2610.72.138.129 – 10.72.138.19010.72.138.191
4410.72.138.192/2610.72.138.193 – 10.72.138.25410.72.138.255
4510.72.139.0/2610.72.139.1 – 10.72.139.6210.72.139.63
4610.72.139.64/2610.72.139.65 – 10.72.139.12610.72.139.127
4710.72.139.128/2610.72.139.129 – 10.72.139.19010.72.139.191
4810.72.139.192/2610.72.139.193 – 10.72.139.25410.72.139.255
4910.72.140.0/2610.72.140.1 – 10.72.140.6210.72.140.63
5010.72.140.64/2610.72.140.65 – 10.72.140.12610.72.140.127
5110.72.140.128/2610.72.140.129 – 10.72.140.19010.72.140.191
5210.72.140.192/2610.72.140.193 – 10.72.140.25410.72.140.255
5310.72.141.0/2610.72.141.1 – 10.72.141.6210.72.141.63
5410.72.141.64/2610.72.141.65 – 10.72.141.12610.72.141.127
5510.72.141.128/2610.72.141.129 – 10.72.141.19010.72.141.191
5610.72.141.192/2610.72.141.193 – 10.72.141.25410.72.141.255
5710.72.142.0/2610.72.142.1 – 10.72.142.6210.72.142.63
5810.72.142.64/2610.72.142.65 – 10.72.142.12610.72.142.127
5910.72.142.128/2610.72.142.129 – 10.72.142.19010.72.142.191
6010.72.142.192/2610.72.142.193 – 10.72.142.25410.72.142.255
6110.72.143.0/2610.72.143.1 – 10.72.143.6210.72.143.63
6210.72.143.64/2610.72.143.65 – 10.72.143.12610.72.143.127
6310.72.143.128/2610.72.143.129 – 10.72.143.19010.72.143.191
6410.72.143.192/2610.72.143.193 – 10.72.143.25410.72.143.255
6510.72.144.0/2610.72.144.1 – 10.72.144.6210.72.144.63
6610.72.144.64/2610.72.144.65 – 10.72.144.12610.72.144.127
6710.72.144.128/2610.72.144.129 – 10.72.144.19010.72.144.191
6810.72.144.192/2610.72.144.193 – 10.72.144.25410.72.144.255
6910.72.145.0/2610.72.145.1 – 10.72.145.6210.72.145.63
7010.72.145.64/2610.72.145.65 – 10.72.145.12610.72.145.127
7110.72.145.128/2610.72.145.129 – 10.72.145.19010.72.145.191
7210.72.145.192/2610.72.145.193 – 10.72.145.25410.72.145.255
7310.72.146.0/2610.72.146.1 – 10.72.146.6210.72.146.63
7410.72.146.64/2610.72.146.65 – 10.72.146.12610.72.146.127
7510.72.146.128/2610.72.146.129 – 10.72.146.19010.72.146.191
7610.72.146.192/2610.72.146.193 – 10.72.146.25410.72.146.255
7710.72.147.0/2610.72.147.1 – 10.72.147.6210.72.147.63
7810.72.147.64/2610.72.147.65 – 10.72.147.12610.72.147.127
7910.72.147.128/2610.72.147.129 – 10.72.147.19010.72.147.191
8010.72.147.192/2610.72.147.193 – 10.72.147.25410.72.147.255
8110.72.148.0/2610.72.148.1 – 10.72.148.6210.72.148.63
8210.72.148.64/2610.72.148.65 – 10.72.148.12610.72.148.127
8310.72.148.128/2610.72.148.129 – 10.72.148.19010.72.148.191
8410.72.148.192/2610.72.148.193 – 10.72.148.25410.72.148.255
8510.72.149.0/2610.72.149.1 – 10.72.149.6210.72.149.63
8610.72.149.64/2610.72.149.65 – 10.72.149.12610.72.149.127
8710.72.149.128/2610.72.149.129 – 10.72.149.19010.72.149.191
8810.72.149.192/2610.72.149.193 – 10.72.149.25410.72.149.255
8910.72.150.0/2610.72.150.1 – 10.72.150.6210.72.150.63
9010.72.150.64/2610.72.150.65 – 10.72.150.12610.72.150.127
9110.72.150.128/2610.72.150.129 – 10.72.150.19010.72.150.191
9210.72.150.192/2610.72.150.193 – 10.72.150.25410.72.150.255
9310.72.151.0/2610.72.151.1 – 10.72.151.6210.72.151.63
9410.72.151.64/2610.72.151.65 – 10.72.151.12610.72.151.127
9510.72.151.128/2610.72.151.129 – 10.72.151.19010.72.151.191
9610.72.151.192/2610.72.151.193 – 10.72.151.25410.72.151.255
9710.72.152.0/2610.72.152.1 – 10.72.152.6210.72.152.63
9810.72.152.64/2610.72.152.65 – 10.72.152.12610.72.152.127
9910.72.152.128/2610.72.152.129 – 10.72.152.19010.72.152.191
10010.72.152.192/2610.72.152.193 – 10.72.152.25410.72.152.255
10110.72.153.0/2610.72.153.1 – 10.72.153.6210.72.153.63
10210.72.153.64/2610.72.153.65 – 10.72.153.12610.72.153.127
10310.72.153.128/2610.72.153.129 – 10.72.153.19010.72.153.191
10410.72.153.192/2610.72.153.193 – 10.72.153.25410.72.153.255
10510.72.154.0/2610.72.154.1 – 10.72.154.6210.72.154.63
10610.72.154.64/2610.72.154.65 – 10.72.154.12610.72.154.127
10710.72.154.128/2610.72.154.129 – 10.72.154.19010.72.154.191
10810.72.154.192/2610.72.154.193 – 10.72.154.25410.72.154.255
10910.72.155.0/2610.72.155.1 – 10.72.155.6210.72.155.63
11010.72.155.64/2610.72.155.65 – 10.72.155.12610.72.155.127
11110.72.155.128/2610.72.155.129 – 10.72.155.19010.72.155.191
11210.72.155.192/2610.72.155.193 – 10.72.155.25410.72.155.255
11310.72.156.0/2610.72.156.1 – 10.72.156.6210.72.156.63
11410.72.156.64/2610.72.156.65 – 10.72.156.12610.72.156.127
11510.72.156.128/2610.72.156.129 – 10.72.156.19010.72.156.191
11610.72.156.192/2610.72.156.193 – 10.72.156.25410.72.156.255
11710.72.157.0/2610.72.157.1 – 10.72.157.6210.72.157.63
11810.72.157.64/2610.72.157.65 – 10.72.157.12610.72.157.127
11910.72.157.128/2610.72.157.129 – 10.72.157.19010.72.157.191
12010.72.157.192/2610.72.157.193 – 10.72.157.25410.72.157.255
12110.72.158.0/2610.72.158.1 – 10.72.158.6210.72.158.63
12210.72.158.64/2610.72.158.65 – 10.72.158.12610.72.158.127
12310.72.158.128/2610.72.158.129 – 10.72.158.19010.72.158.191
12410.72.158.192/2610.72.158.193 – 10.72.158.25410.72.158.255
12510.72.159.0/2610.72.159.1 – 10.72.159.6210.72.159.63
12610.72.159.64/2610.72.159.65 – 10.72.159.12610.72.159.127
12710.72.159.128/2610.72.159.129 – 10.72.159.19010.72.159.191
12810.72.159.192/2610.72.159.193 – 10.72.159.25410.72.159.255
12910.72.160.0/2610.72.160.1 – 10.72.160.6210.72.160.63
13010.72.160.64/2610.72.160.65 – 10.72.160.12610.72.160.127
13110.72.160.128/2610.72.160.129 – 10.72.160.19010.72.160.191
13210.72.160.192/2610.72.160.193 – 10.72.160.25410.72.160.255
13310.72.161.0/2610.72.161.1 – 10.72.161.6210.72.161.63
13410.72.161.64/2610.72.161.65 – 10.72.161.12610.72.161.127
13510.72.161.128/2610.72.161.129 – 10.72.161.19010.72.161.191
13610.72.161.192/2610.72.161.193 – 10.72.161.25410.72.161.255
13710.72.162.0/2610.72.162.1 – 10.72.162.6210.72.162.63
13810.72.162.64/2610.72.162.65 – 10.72.162.12610.72.162.127
13910.72.162.128/2610.72.162.129 – 10.72.162.19010.72.162.191
14010.72.162.192/2610.72.162.193 – 10.72.162.25410.72.162.255
14110.72.163.0/2610.72.163.1 – 10.72.163.6210.72.163.63
14210.72.163.64/2610.72.163.65 – 10.72.163.12610.72.163.127
14310.72.163.128/2610.72.163.129 – 10.72.163.19010.72.163.191
14410.72.163.192/2610.72.163.193 – 10.72.163.25410.72.163.255
14510.72.164.0/2610.72.164.1 – 10.72.164.6210.72.164.63
14610.72.164.64/2610.72.164.65 – 10.72.164.12610.72.164.127
14710.72.164.128/2610.72.164.129 – 10.72.164.19010.72.164.191
14810.72.164.192/2610.72.164.193 – 10.72.164.25410.72.164.255
14910.72.165.0/2610.72.165.1 – 10.72.165.6210.72.165.63
15010.72.165.64/2610.72.165.65 – 10.72.165.12610.72.165.127
15110.72.165.128/2610.72.165.129 – 10.72.165.19010.72.165.191
15210.72.165.192/2610.72.165.193 – 10.72.165.25410.72.165.255
15310.72.166.0/2610.72.166.1 – 10.72.166.6210.72.166.63
15410.72.166.64/2610.72.166.65 – 10.72.166.12610.72.166.127
15510.72.166.128/2610.72.166.129 – 10.72.166.19010.72.166.191
15610.72.166.192/2610.72.166.193 – 10.72.166.25410.72.166.255
15710.72.167.0/2610.72.167.1 – 10.72.167.6210.72.167.63
15810.72.167.64/2610.72.167.65 – 10.72.167.12610.72.167.127
15910.72.167.128/2610.72.167.129 – 10.72.167.19010.72.167.191
16010.72.167.192/2610.72.167.193 – 10.72.167.25410.72.167.255
16110.72.168.0/2610.72.168.1 – 10.72.168.6210.72.168.63
16210.72.168.64/2610.72.168.65 – 10.72.168.12610.72.168.127
16310.72.168.128/2610.72.168.129 – 10.72.168.19010.72.168.191
16410.72.168.192/2610.72.168.193 – 10.72.168.25410.72.168.255
16510.72.169.0/2610.72.169.1 – 10.72.169.6210.72.169.63
16610.72.169.64/2610.72.169.65 – 10.72.169.12610.72.169.127
16710.72.169.128/2610.72.169.129 – 10.72.169.19010.72.169.191
16810.72.169.192/2610.72.169.193 – 10.72.169.25410.72.169.255
16910.72.170.0/2610.72.170.1 – 10.72.170.6210.72.170.63
17010.72.170.64/2610.72.170.65 – 10.72.170.12610.72.170.127
17110.72.170.128/2610.72.170.129 – 10.72.170.19010.72.170.191
17210.72.170.192/2610.72.170.193 – 10.72.170.25410.72.170.255
17310.72.171.0/2610.72.171.1 – 10.72.171.6210.72.171.63
17410.72.171.64/2610.72.171.65 – 10.72.171.12610.72.171.127
17510.72.171.128/2610.72.171.129 – 10.72.171.19010.72.171.191
17610.72.171.192/2610.72.171.193 – 10.72.171.25410.72.171.255
17710.72.172.0/2610.72.172.1 – 10.72.172.6210.72.172.63
17810.72.172.64/2610.72.172.65 – 10.72.172.12610.72.172.127
17910.72.172.128/2610.72.172.129 – 10.72.172.19010.72.172.191
18010.72.172.192/2610.72.172.193 – 10.72.172.25410.72.172.255
18110.72.173.0/2610.72.173.1 – 10.72.173.6210.72.173.63
18210.72.173.64/2610.72.173.65 – 10.72.173.12610.72.173.127
18310.72.173.128/2610.72.173.129 – 10.72.173.19010.72.173.191
18410.72.173.192/2610.72.173.193 – 10.72.173.25410.72.173.255
18510.72.174.0/2610.72.174.1 – 10.72.174.6210.72.174.63
18610.72.174.64/2610.72.174.65 – 10.72.174.12610.72.174.127
18710.72.174.128/2610.72.174.129 – 10.72.174.19010.72.174.191
18810.72.174.192/2610.72.174.193 – 10.72.174.25410.72.174.255
18910.72.175.0/2610.72.175.1 – 10.72.175.6210.72.175.63
19010.72.175.64/2610.72.175.65 – 10.72.175.12610.72.175.127
19110.72.175.128/2610.72.175.129 – 10.72.175.19010.72.175.191
19210.72.175.192/2610.72.175.193 – 10.72.175.25410.72.175.255
19310.72.176.0/2610.72.176.1 – 10.72.176.6210.72.176.63
19410.72.176.64/2610.72.176.65 – 10.72.176.12610.72.176.127
19510.72.176.128/2610.72.176.129 – 10.72.176.19010.72.176.191
19610.72.176.192/2610.72.176.193 – 10.72.176.25410.72.176.255
19710.72.177.0/2610.72.177.1 – 10.72.177.6210.72.177.63
19810.72.177.64/2610.72.177.65 – 10.72.177.12610.72.177.127
19910.72.177.128/2610.72.177.129 – 10.72.177.19010.72.177.191
20010.72.177.192/2610.72.177.193 – 10.72.177.25410.72.177.255
20110.72.178.0/2610.72.178.1 – 10.72.178.6210.72.178.63
20210.72.178.64/2610.72.178.65 – 10.72.178.12610.72.178.127
20310.72.178.128/2610.72.178.129 – 10.72.178.19010.72.178.191
20410.72.178.192/2610.72.178.193 – 10.72.178.25410.72.178.255
20510.72.179.0/2610.72.179.1 – 10.72.179.6210.72.179.63
20610.72.179.64/2610.72.179.65 – 10.72.179.12610.72.179.127
20710.72.179.128/2610.72.179.129 – 10.72.179.19010.72.179.191
20810.72.179.192/2610.72.179.193 – 10.72.179.25410.72.179.255
20910.72.180.0/2610.72.180.1 – 10.72.180.6210.72.180.63
21010.72.180.64/2610.72.180.65 – 10.72.180.12610.72.180.127
21110.72.180.128/2610.72.180.129 – 10.72.180.19010.72.180.191
21210.72.180.192/2610.72.180.193 – 10.72.180.25410.72.180.255
21310.72.181.0/2610.72.181.1 – 10.72.181.6210.72.181.63
21410.72.181.64/2610.72.181.65 – 10.72.181.12610.72.181.127
21510.72.181.128/2610.72.181.129 – 10.72.181.19010.72.181.191
21610.72.181.192/2610.72.181.193 – 10.72.181.25410.72.181.255
21710.72.182.0/2610.72.182.1 – 10.72.182.6210.72.182.63
21810.72.182.64/2610.72.182.65 – 10.72.182.12610.72.182.127
21910.72.182.128/2610.72.182.129 – 10.72.182.19010.72.182.191
22010.72.182.192/2610.72.182.193 – 10.72.182.25410.72.182.255
22110.72.183.0/2610.72.183.1 – 10.72.183.6210.72.183.63
22210.72.183.64/2610.72.183.65 – 10.72.183.12610.72.183.127
22310.72.183.128/2610.72.183.129 – 10.72.183.19010.72.183.191
22410.72.183.192/2610.72.183.193 – 10.72.183.25410.72.183.255
22510.72.184.0/2610.72.184.1 – 10.72.184.6210.72.184.63
22610.72.184.64/2610.72.184.65 – 10.72.184.12610.72.184.127
22710.72.184.128/2610.72.184.129 – 10.72.184.19010.72.184.191
22810.72.184.192/2610.72.184.193 – 10.72.184.25410.72.184.255
22910.72.185.0/2610.72.185.1 – 10.72.185.6210.72.185.63
23010.72.185.64/2610.72.185.65 – 10.72.185.12610.72.185.127
23110.72.185.128/2610.72.185.129 – 10.72.185.19010.72.185.191
23210.72.185.192/2610.72.185.193 – 10.72.185.25410.72.185.255
23310.72.186.0/2610.72.186.1 – 10.72.186.6210.72.186.63
23410.72.186.64/2610.72.186.65 – 10.72.186.12610.72.186.127
23510.72.186.128/2610.72.186.129 – 10.72.186.19010.72.186.191
23610.72.186.192/2610.72.186.193 – 10.72.186.25410.72.186.255
23710.72.187.0/2610.72.187.1 – 10.72.187.6210.72.187.63
23810.72.187.64/2610.72.187.65 – 10.72.187.12610.72.187.127
23910.72.187.128/2610.72.187.129 – 10.72.187.19010.72.187.191
24010.72.187.192/2610.72.187.193 – 10.72.187.25410.72.187.255
24110.72.188.0/2610.72.188.1 – 10.72.188.6210.72.188.63
24210.72.188.64/2610.72.188.65 – 10.72.188.12610.72.188.127
24310.72.188.128/2610.72.188.129 – 10.72.188.19010.72.188.191
24410.72.188.192/2610.72.188.193 – 10.72.188.25410.72.188.255
24510.72.189.0/2610.72.189.1 – 10.72.189.6210.72.189.63
24610.72.189.64/2610.72.189.65 – 10.72.189.12610.72.189.127
24710.72.189.128/2610.72.189.129 – 10.72.189.19010.72.189.191
24810.72.189.192/2610.72.189.193 – 10.72.189.25410.72.189.255
24910.72.190.0/2610.72.190.1 – 10.72.190.6210.72.190.63
25010.72.190.64/2610.72.190.65 – 10.72.190.12610.72.190.127
25110.72.190.128/2610.72.190.129 – 10.72.190.19010.72.190.191
25210.72.190.192/2610.72.190.193 – 10.72.190.25410.72.190.255
25310.72.191.0/2610.72.191.1 – 10.72.191.6210.72.191.63
25410.72.191.64/2610.72.191.65 – 10.72.191.12610.72.191.127
25510.72.191.128/2610.72.191.129 – 10.72.191.19010.72.191.191
25610.72.191.192/2610.72.191.193 – 10.72.191.25410.72.191.255

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 /17
/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-
/16255.255.0.065,53665,534-
/17255.255.128.032,76832,7661
/18255.255.192.016,38416,3822 split →
/19255.255.224.08,1928,1904 split →
/20255.255.240.04,0964,0948 split →
/21255.255.248.02,0482,04616 split →
/22255.255.252.01,0241,02232 split →
/23255.255.254.051251064 split →
/24255.255.255.0256254128 split →
/25255.255.255.128128126256 split →
/26255.255.255.1926462512 split →
/27255.255.255.22432301,024 split →
/28255.255.255.24016142,048 split →
/29255.255.255.248864,096 split →
/30255.255.255.252428,192 split →
/31255.255.255.2542216,384 split →
/32255.255.255.2551132,768 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 →