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)10.89.128.0/17
network10.89.128.0/17
broadcast10.89.255.255
first host10.89.128.1
last host10.89.255.254
subnet mask255.255.128.0
wildcard0.0.127.255
addresses32,768
usable hosts32,766
classA
ipcalc 10.89.128.0/17
address00001010.01011001.10000000.00000000
subnet mask11111111.11111111.10000000.00000000
network00001010.01011001.10000000.00000000
broadcast00001010.01011001.11111111.11111111
green = network part, grey = host part
hex0x0a598000
decimal173637632
reverse dns0.128.89.10.in-addr.arpa
ipv4-mapped::ffff:a59:8000

/17 split into /26 · 512 subnets

close ×
#networkhost rangebroadcast
110.89.128.0/2610.89.128.1 – 10.89.128.6210.89.128.63
210.89.128.64/2610.89.128.65 – 10.89.128.12610.89.128.127
310.89.128.128/2610.89.128.129 – 10.89.128.19010.89.128.191
410.89.128.192/2610.89.128.193 – 10.89.128.25410.89.128.255
510.89.129.0/2610.89.129.1 – 10.89.129.6210.89.129.63
610.89.129.64/2610.89.129.65 – 10.89.129.12610.89.129.127
710.89.129.128/2610.89.129.129 – 10.89.129.19010.89.129.191
810.89.129.192/2610.89.129.193 – 10.89.129.25410.89.129.255
910.89.130.0/2610.89.130.1 – 10.89.130.6210.89.130.63
1010.89.130.64/2610.89.130.65 – 10.89.130.12610.89.130.127
1110.89.130.128/2610.89.130.129 – 10.89.130.19010.89.130.191
1210.89.130.192/2610.89.130.193 – 10.89.130.25410.89.130.255
1310.89.131.0/2610.89.131.1 – 10.89.131.6210.89.131.63
1410.89.131.64/2610.89.131.65 – 10.89.131.12610.89.131.127
1510.89.131.128/2610.89.131.129 – 10.89.131.19010.89.131.191
1610.89.131.192/2610.89.131.193 – 10.89.131.25410.89.131.255
1710.89.132.0/2610.89.132.1 – 10.89.132.6210.89.132.63
1810.89.132.64/2610.89.132.65 – 10.89.132.12610.89.132.127
1910.89.132.128/2610.89.132.129 – 10.89.132.19010.89.132.191
2010.89.132.192/2610.89.132.193 – 10.89.132.25410.89.132.255
2110.89.133.0/2610.89.133.1 – 10.89.133.6210.89.133.63
2210.89.133.64/2610.89.133.65 – 10.89.133.12610.89.133.127
2310.89.133.128/2610.89.133.129 – 10.89.133.19010.89.133.191
2410.89.133.192/2610.89.133.193 – 10.89.133.25410.89.133.255
2510.89.134.0/2610.89.134.1 – 10.89.134.6210.89.134.63
2610.89.134.64/2610.89.134.65 – 10.89.134.12610.89.134.127
2710.89.134.128/2610.89.134.129 – 10.89.134.19010.89.134.191
2810.89.134.192/2610.89.134.193 – 10.89.134.25410.89.134.255
2910.89.135.0/2610.89.135.1 – 10.89.135.6210.89.135.63
3010.89.135.64/2610.89.135.65 – 10.89.135.12610.89.135.127
3110.89.135.128/2610.89.135.129 – 10.89.135.19010.89.135.191
3210.89.135.192/2610.89.135.193 – 10.89.135.25410.89.135.255
3310.89.136.0/2610.89.136.1 – 10.89.136.6210.89.136.63
3410.89.136.64/2610.89.136.65 – 10.89.136.12610.89.136.127
3510.89.136.128/2610.89.136.129 – 10.89.136.19010.89.136.191
3610.89.136.192/2610.89.136.193 – 10.89.136.25410.89.136.255
3710.89.137.0/2610.89.137.1 – 10.89.137.6210.89.137.63
3810.89.137.64/2610.89.137.65 – 10.89.137.12610.89.137.127
3910.89.137.128/2610.89.137.129 – 10.89.137.19010.89.137.191
4010.89.137.192/2610.89.137.193 – 10.89.137.25410.89.137.255
4110.89.138.0/2610.89.138.1 – 10.89.138.6210.89.138.63
4210.89.138.64/2610.89.138.65 – 10.89.138.12610.89.138.127
4310.89.138.128/2610.89.138.129 – 10.89.138.19010.89.138.191
4410.89.138.192/2610.89.138.193 – 10.89.138.25410.89.138.255
4510.89.139.0/2610.89.139.1 – 10.89.139.6210.89.139.63
4610.89.139.64/2610.89.139.65 – 10.89.139.12610.89.139.127
4710.89.139.128/2610.89.139.129 – 10.89.139.19010.89.139.191
4810.89.139.192/2610.89.139.193 – 10.89.139.25410.89.139.255
4910.89.140.0/2610.89.140.1 – 10.89.140.6210.89.140.63
5010.89.140.64/2610.89.140.65 – 10.89.140.12610.89.140.127
5110.89.140.128/2610.89.140.129 – 10.89.140.19010.89.140.191
5210.89.140.192/2610.89.140.193 – 10.89.140.25410.89.140.255
5310.89.141.0/2610.89.141.1 – 10.89.141.6210.89.141.63
5410.89.141.64/2610.89.141.65 – 10.89.141.12610.89.141.127
5510.89.141.128/2610.89.141.129 – 10.89.141.19010.89.141.191
5610.89.141.192/2610.89.141.193 – 10.89.141.25410.89.141.255
5710.89.142.0/2610.89.142.1 – 10.89.142.6210.89.142.63
5810.89.142.64/2610.89.142.65 – 10.89.142.12610.89.142.127
5910.89.142.128/2610.89.142.129 – 10.89.142.19010.89.142.191
6010.89.142.192/2610.89.142.193 – 10.89.142.25410.89.142.255
6110.89.143.0/2610.89.143.1 – 10.89.143.6210.89.143.63
6210.89.143.64/2610.89.143.65 – 10.89.143.12610.89.143.127
6310.89.143.128/2610.89.143.129 – 10.89.143.19010.89.143.191
6410.89.143.192/2610.89.143.193 – 10.89.143.25410.89.143.255
6510.89.144.0/2610.89.144.1 – 10.89.144.6210.89.144.63
6610.89.144.64/2610.89.144.65 – 10.89.144.12610.89.144.127
6710.89.144.128/2610.89.144.129 – 10.89.144.19010.89.144.191
6810.89.144.192/2610.89.144.193 – 10.89.144.25410.89.144.255
6910.89.145.0/2610.89.145.1 – 10.89.145.6210.89.145.63
7010.89.145.64/2610.89.145.65 – 10.89.145.12610.89.145.127
7110.89.145.128/2610.89.145.129 – 10.89.145.19010.89.145.191
7210.89.145.192/2610.89.145.193 – 10.89.145.25410.89.145.255
7310.89.146.0/2610.89.146.1 – 10.89.146.6210.89.146.63
7410.89.146.64/2610.89.146.65 – 10.89.146.12610.89.146.127
7510.89.146.128/2610.89.146.129 – 10.89.146.19010.89.146.191
7610.89.146.192/2610.89.146.193 – 10.89.146.25410.89.146.255
7710.89.147.0/2610.89.147.1 – 10.89.147.6210.89.147.63
7810.89.147.64/2610.89.147.65 – 10.89.147.12610.89.147.127
7910.89.147.128/2610.89.147.129 – 10.89.147.19010.89.147.191
8010.89.147.192/2610.89.147.193 – 10.89.147.25410.89.147.255
8110.89.148.0/2610.89.148.1 – 10.89.148.6210.89.148.63
8210.89.148.64/2610.89.148.65 – 10.89.148.12610.89.148.127
8310.89.148.128/2610.89.148.129 – 10.89.148.19010.89.148.191
8410.89.148.192/2610.89.148.193 – 10.89.148.25410.89.148.255
8510.89.149.0/2610.89.149.1 – 10.89.149.6210.89.149.63
8610.89.149.64/2610.89.149.65 – 10.89.149.12610.89.149.127
8710.89.149.128/2610.89.149.129 – 10.89.149.19010.89.149.191
8810.89.149.192/2610.89.149.193 – 10.89.149.25410.89.149.255
8910.89.150.0/2610.89.150.1 – 10.89.150.6210.89.150.63
9010.89.150.64/2610.89.150.65 – 10.89.150.12610.89.150.127
9110.89.150.128/2610.89.150.129 – 10.89.150.19010.89.150.191
9210.89.150.192/2610.89.150.193 – 10.89.150.25410.89.150.255
9310.89.151.0/2610.89.151.1 – 10.89.151.6210.89.151.63
9410.89.151.64/2610.89.151.65 – 10.89.151.12610.89.151.127
9510.89.151.128/2610.89.151.129 – 10.89.151.19010.89.151.191
9610.89.151.192/2610.89.151.193 – 10.89.151.25410.89.151.255
9710.89.152.0/2610.89.152.1 – 10.89.152.6210.89.152.63
9810.89.152.64/2610.89.152.65 – 10.89.152.12610.89.152.127
9910.89.152.128/2610.89.152.129 – 10.89.152.19010.89.152.191
10010.89.152.192/2610.89.152.193 – 10.89.152.25410.89.152.255
10110.89.153.0/2610.89.153.1 – 10.89.153.6210.89.153.63
10210.89.153.64/2610.89.153.65 – 10.89.153.12610.89.153.127
10310.89.153.128/2610.89.153.129 – 10.89.153.19010.89.153.191
10410.89.153.192/2610.89.153.193 – 10.89.153.25410.89.153.255
10510.89.154.0/2610.89.154.1 – 10.89.154.6210.89.154.63
10610.89.154.64/2610.89.154.65 – 10.89.154.12610.89.154.127
10710.89.154.128/2610.89.154.129 – 10.89.154.19010.89.154.191
10810.89.154.192/2610.89.154.193 – 10.89.154.25410.89.154.255
10910.89.155.0/2610.89.155.1 – 10.89.155.6210.89.155.63
11010.89.155.64/2610.89.155.65 – 10.89.155.12610.89.155.127
11110.89.155.128/2610.89.155.129 – 10.89.155.19010.89.155.191
11210.89.155.192/2610.89.155.193 – 10.89.155.25410.89.155.255
11310.89.156.0/2610.89.156.1 – 10.89.156.6210.89.156.63
11410.89.156.64/2610.89.156.65 – 10.89.156.12610.89.156.127
11510.89.156.128/2610.89.156.129 – 10.89.156.19010.89.156.191
11610.89.156.192/2610.89.156.193 – 10.89.156.25410.89.156.255
11710.89.157.0/2610.89.157.1 – 10.89.157.6210.89.157.63
11810.89.157.64/2610.89.157.65 – 10.89.157.12610.89.157.127
11910.89.157.128/2610.89.157.129 – 10.89.157.19010.89.157.191
12010.89.157.192/2610.89.157.193 – 10.89.157.25410.89.157.255
12110.89.158.0/2610.89.158.1 – 10.89.158.6210.89.158.63
12210.89.158.64/2610.89.158.65 – 10.89.158.12610.89.158.127
12310.89.158.128/2610.89.158.129 – 10.89.158.19010.89.158.191
12410.89.158.192/2610.89.158.193 – 10.89.158.25410.89.158.255
12510.89.159.0/2610.89.159.1 – 10.89.159.6210.89.159.63
12610.89.159.64/2610.89.159.65 – 10.89.159.12610.89.159.127
12710.89.159.128/2610.89.159.129 – 10.89.159.19010.89.159.191
12810.89.159.192/2610.89.159.193 – 10.89.159.25410.89.159.255
12910.89.160.0/2610.89.160.1 – 10.89.160.6210.89.160.63
13010.89.160.64/2610.89.160.65 – 10.89.160.12610.89.160.127
13110.89.160.128/2610.89.160.129 – 10.89.160.19010.89.160.191
13210.89.160.192/2610.89.160.193 – 10.89.160.25410.89.160.255
13310.89.161.0/2610.89.161.1 – 10.89.161.6210.89.161.63
13410.89.161.64/2610.89.161.65 – 10.89.161.12610.89.161.127
13510.89.161.128/2610.89.161.129 – 10.89.161.19010.89.161.191
13610.89.161.192/2610.89.161.193 – 10.89.161.25410.89.161.255
13710.89.162.0/2610.89.162.1 – 10.89.162.6210.89.162.63
13810.89.162.64/2610.89.162.65 – 10.89.162.12610.89.162.127
13910.89.162.128/2610.89.162.129 – 10.89.162.19010.89.162.191
14010.89.162.192/2610.89.162.193 – 10.89.162.25410.89.162.255
14110.89.163.0/2610.89.163.1 – 10.89.163.6210.89.163.63
14210.89.163.64/2610.89.163.65 – 10.89.163.12610.89.163.127
14310.89.163.128/2610.89.163.129 – 10.89.163.19010.89.163.191
14410.89.163.192/2610.89.163.193 – 10.89.163.25410.89.163.255
14510.89.164.0/2610.89.164.1 – 10.89.164.6210.89.164.63
14610.89.164.64/2610.89.164.65 – 10.89.164.12610.89.164.127
14710.89.164.128/2610.89.164.129 – 10.89.164.19010.89.164.191
14810.89.164.192/2610.89.164.193 – 10.89.164.25410.89.164.255
14910.89.165.0/2610.89.165.1 – 10.89.165.6210.89.165.63
15010.89.165.64/2610.89.165.65 – 10.89.165.12610.89.165.127
15110.89.165.128/2610.89.165.129 – 10.89.165.19010.89.165.191
15210.89.165.192/2610.89.165.193 – 10.89.165.25410.89.165.255
15310.89.166.0/2610.89.166.1 – 10.89.166.6210.89.166.63
15410.89.166.64/2610.89.166.65 – 10.89.166.12610.89.166.127
15510.89.166.128/2610.89.166.129 – 10.89.166.19010.89.166.191
15610.89.166.192/2610.89.166.193 – 10.89.166.25410.89.166.255
15710.89.167.0/2610.89.167.1 – 10.89.167.6210.89.167.63
15810.89.167.64/2610.89.167.65 – 10.89.167.12610.89.167.127
15910.89.167.128/2610.89.167.129 – 10.89.167.19010.89.167.191
16010.89.167.192/2610.89.167.193 – 10.89.167.25410.89.167.255
16110.89.168.0/2610.89.168.1 – 10.89.168.6210.89.168.63
16210.89.168.64/2610.89.168.65 – 10.89.168.12610.89.168.127
16310.89.168.128/2610.89.168.129 – 10.89.168.19010.89.168.191
16410.89.168.192/2610.89.168.193 – 10.89.168.25410.89.168.255
16510.89.169.0/2610.89.169.1 – 10.89.169.6210.89.169.63
16610.89.169.64/2610.89.169.65 – 10.89.169.12610.89.169.127
16710.89.169.128/2610.89.169.129 – 10.89.169.19010.89.169.191
16810.89.169.192/2610.89.169.193 – 10.89.169.25410.89.169.255
16910.89.170.0/2610.89.170.1 – 10.89.170.6210.89.170.63
17010.89.170.64/2610.89.170.65 – 10.89.170.12610.89.170.127
17110.89.170.128/2610.89.170.129 – 10.89.170.19010.89.170.191
17210.89.170.192/2610.89.170.193 – 10.89.170.25410.89.170.255
17310.89.171.0/2610.89.171.1 – 10.89.171.6210.89.171.63
17410.89.171.64/2610.89.171.65 – 10.89.171.12610.89.171.127
17510.89.171.128/2610.89.171.129 – 10.89.171.19010.89.171.191
17610.89.171.192/2610.89.171.193 – 10.89.171.25410.89.171.255
17710.89.172.0/2610.89.172.1 – 10.89.172.6210.89.172.63
17810.89.172.64/2610.89.172.65 – 10.89.172.12610.89.172.127
17910.89.172.128/2610.89.172.129 – 10.89.172.19010.89.172.191
18010.89.172.192/2610.89.172.193 – 10.89.172.25410.89.172.255
18110.89.173.0/2610.89.173.1 – 10.89.173.6210.89.173.63
18210.89.173.64/2610.89.173.65 – 10.89.173.12610.89.173.127
18310.89.173.128/2610.89.173.129 – 10.89.173.19010.89.173.191
18410.89.173.192/2610.89.173.193 – 10.89.173.25410.89.173.255
18510.89.174.0/2610.89.174.1 – 10.89.174.6210.89.174.63
18610.89.174.64/2610.89.174.65 – 10.89.174.12610.89.174.127
18710.89.174.128/2610.89.174.129 – 10.89.174.19010.89.174.191
18810.89.174.192/2610.89.174.193 – 10.89.174.25410.89.174.255
18910.89.175.0/2610.89.175.1 – 10.89.175.6210.89.175.63
19010.89.175.64/2610.89.175.65 – 10.89.175.12610.89.175.127
19110.89.175.128/2610.89.175.129 – 10.89.175.19010.89.175.191
19210.89.175.192/2610.89.175.193 – 10.89.175.25410.89.175.255
19310.89.176.0/2610.89.176.1 – 10.89.176.6210.89.176.63
19410.89.176.64/2610.89.176.65 – 10.89.176.12610.89.176.127
19510.89.176.128/2610.89.176.129 – 10.89.176.19010.89.176.191
19610.89.176.192/2610.89.176.193 – 10.89.176.25410.89.176.255
19710.89.177.0/2610.89.177.1 – 10.89.177.6210.89.177.63
19810.89.177.64/2610.89.177.65 – 10.89.177.12610.89.177.127
19910.89.177.128/2610.89.177.129 – 10.89.177.19010.89.177.191
20010.89.177.192/2610.89.177.193 – 10.89.177.25410.89.177.255
20110.89.178.0/2610.89.178.1 – 10.89.178.6210.89.178.63
20210.89.178.64/2610.89.178.65 – 10.89.178.12610.89.178.127
20310.89.178.128/2610.89.178.129 – 10.89.178.19010.89.178.191
20410.89.178.192/2610.89.178.193 – 10.89.178.25410.89.178.255
20510.89.179.0/2610.89.179.1 – 10.89.179.6210.89.179.63
20610.89.179.64/2610.89.179.65 – 10.89.179.12610.89.179.127
20710.89.179.128/2610.89.179.129 – 10.89.179.19010.89.179.191
20810.89.179.192/2610.89.179.193 – 10.89.179.25410.89.179.255
20910.89.180.0/2610.89.180.1 – 10.89.180.6210.89.180.63
21010.89.180.64/2610.89.180.65 – 10.89.180.12610.89.180.127
21110.89.180.128/2610.89.180.129 – 10.89.180.19010.89.180.191
21210.89.180.192/2610.89.180.193 – 10.89.180.25410.89.180.255
21310.89.181.0/2610.89.181.1 – 10.89.181.6210.89.181.63
21410.89.181.64/2610.89.181.65 – 10.89.181.12610.89.181.127
21510.89.181.128/2610.89.181.129 – 10.89.181.19010.89.181.191
21610.89.181.192/2610.89.181.193 – 10.89.181.25410.89.181.255
21710.89.182.0/2610.89.182.1 – 10.89.182.6210.89.182.63
21810.89.182.64/2610.89.182.65 – 10.89.182.12610.89.182.127
21910.89.182.128/2610.89.182.129 – 10.89.182.19010.89.182.191
22010.89.182.192/2610.89.182.193 – 10.89.182.25410.89.182.255
22110.89.183.0/2610.89.183.1 – 10.89.183.6210.89.183.63
22210.89.183.64/2610.89.183.65 – 10.89.183.12610.89.183.127
22310.89.183.128/2610.89.183.129 – 10.89.183.19010.89.183.191
22410.89.183.192/2610.89.183.193 – 10.89.183.25410.89.183.255
22510.89.184.0/2610.89.184.1 – 10.89.184.6210.89.184.63
22610.89.184.64/2610.89.184.65 – 10.89.184.12610.89.184.127
22710.89.184.128/2610.89.184.129 – 10.89.184.19010.89.184.191
22810.89.184.192/2610.89.184.193 – 10.89.184.25410.89.184.255
22910.89.185.0/2610.89.185.1 – 10.89.185.6210.89.185.63
23010.89.185.64/2610.89.185.65 – 10.89.185.12610.89.185.127
23110.89.185.128/2610.89.185.129 – 10.89.185.19010.89.185.191
23210.89.185.192/2610.89.185.193 – 10.89.185.25410.89.185.255
23310.89.186.0/2610.89.186.1 – 10.89.186.6210.89.186.63
23410.89.186.64/2610.89.186.65 – 10.89.186.12610.89.186.127
23510.89.186.128/2610.89.186.129 – 10.89.186.19010.89.186.191
23610.89.186.192/2610.89.186.193 – 10.89.186.25410.89.186.255
23710.89.187.0/2610.89.187.1 – 10.89.187.6210.89.187.63
23810.89.187.64/2610.89.187.65 – 10.89.187.12610.89.187.127
23910.89.187.128/2610.89.187.129 – 10.89.187.19010.89.187.191
24010.89.187.192/2610.89.187.193 – 10.89.187.25410.89.187.255
24110.89.188.0/2610.89.188.1 – 10.89.188.6210.89.188.63
24210.89.188.64/2610.89.188.65 – 10.89.188.12610.89.188.127
24310.89.188.128/2610.89.188.129 – 10.89.188.19010.89.188.191
24410.89.188.192/2610.89.188.193 – 10.89.188.25410.89.188.255
24510.89.189.0/2610.89.189.1 – 10.89.189.6210.89.189.63
24610.89.189.64/2610.89.189.65 – 10.89.189.12610.89.189.127
24710.89.189.128/2610.89.189.129 – 10.89.189.19010.89.189.191
24810.89.189.192/2610.89.189.193 – 10.89.189.25410.89.189.255
24910.89.190.0/2610.89.190.1 – 10.89.190.6210.89.190.63
25010.89.190.64/2610.89.190.65 – 10.89.190.12610.89.190.127
25110.89.190.128/2610.89.190.129 – 10.89.190.19010.89.190.191
25210.89.190.192/2610.89.190.193 – 10.89.190.25410.89.190.255
25310.89.191.0/2610.89.191.1 – 10.89.191.6210.89.191.63
25410.89.191.64/2610.89.191.65 – 10.89.191.12610.89.191.127
25510.89.191.128/2610.89.191.129 – 10.89.191.19010.89.191.191
25610.89.191.192/2610.89.191.193 – 10.89.191.25410.89.191.255

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 →