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)10.59.0.0/16
network10.59.0.0/16
broadcast10.59.255.255
first host10.59.0.1
last host10.59.255.254
subnet mask255.255.0.0
wildcard0.0.255.255
addresses65,536
usable hosts65,534
classA
ipcalc 10.59.0.0/16
address00001010.00111011.00000000.00000000
subnet mask11111111.11111111.00000000.00000000
network00001010.00111011.00000000.00000000
broadcast00001010.00111011.11111111.11111111
green = network part, grey = host part
hex0x0a3b0000
decimal171638784
reverse dns0.0.59.10.in-addr.arpa
ipv4-mapped::ffff:a3b:0

/16 split into /23 · 128 subnets

close ×
#networkhost rangebroadcast
110.59.0.0/2310.59.0.1 – 10.59.1.25410.59.1.255
210.59.2.0/2310.59.2.1 – 10.59.3.25410.59.3.255
310.59.4.0/2310.59.4.1 – 10.59.5.25410.59.5.255
410.59.6.0/2310.59.6.1 – 10.59.7.25410.59.7.255
510.59.8.0/2310.59.8.1 – 10.59.9.25410.59.9.255
610.59.10.0/2310.59.10.1 – 10.59.11.25410.59.11.255
710.59.12.0/2310.59.12.1 – 10.59.13.25410.59.13.255
810.59.14.0/2310.59.14.1 – 10.59.15.25410.59.15.255
910.59.16.0/2310.59.16.1 – 10.59.17.25410.59.17.255
1010.59.18.0/2310.59.18.1 – 10.59.19.25410.59.19.255
1110.59.20.0/2310.59.20.1 – 10.59.21.25410.59.21.255
1210.59.22.0/2310.59.22.1 – 10.59.23.25410.59.23.255
1310.59.24.0/2310.59.24.1 – 10.59.25.25410.59.25.255
1410.59.26.0/2310.59.26.1 – 10.59.27.25410.59.27.255
1510.59.28.0/2310.59.28.1 – 10.59.29.25410.59.29.255
1610.59.30.0/2310.59.30.1 – 10.59.31.25410.59.31.255
1710.59.32.0/2310.59.32.1 – 10.59.33.25410.59.33.255
1810.59.34.0/2310.59.34.1 – 10.59.35.25410.59.35.255
1910.59.36.0/2310.59.36.1 – 10.59.37.25410.59.37.255
2010.59.38.0/2310.59.38.1 – 10.59.39.25410.59.39.255
2110.59.40.0/2310.59.40.1 – 10.59.41.25410.59.41.255
2210.59.42.0/2310.59.42.1 – 10.59.43.25410.59.43.255
2310.59.44.0/2310.59.44.1 – 10.59.45.25410.59.45.255
2410.59.46.0/2310.59.46.1 – 10.59.47.25410.59.47.255
2510.59.48.0/2310.59.48.1 – 10.59.49.25410.59.49.255
2610.59.50.0/2310.59.50.1 – 10.59.51.25410.59.51.255
2710.59.52.0/2310.59.52.1 – 10.59.53.25410.59.53.255
2810.59.54.0/2310.59.54.1 – 10.59.55.25410.59.55.255
2910.59.56.0/2310.59.56.1 – 10.59.57.25410.59.57.255
3010.59.58.0/2310.59.58.1 – 10.59.59.25410.59.59.255
3110.59.60.0/2310.59.60.1 – 10.59.61.25410.59.61.255
3210.59.62.0/2310.59.62.1 – 10.59.63.25410.59.63.255
3310.59.64.0/2310.59.64.1 – 10.59.65.25410.59.65.255
3410.59.66.0/2310.59.66.1 – 10.59.67.25410.59.67.255
3510.59.68.0/2310.59.68.1 – 10.59.69.25410.59.69.255
3610.59.70.0/2310.59.70.1 – 10.59.71.25410.59.71.255
3710.59.72.0/2310.59.72.1 – 10.59.73.25410.59.73.255
3810.59.74.0/2310.59.74.1 – 10.59.75.25410.59.75.255
3910.59.76.0/2310.59.76.1 – 10.59.77.25410.59.77.255
4010.59.78.0/2310.59.78.1 – 10.59.79.25410.59.79.255
4110.59.80.0/2310.59.80.1 – 10.59.81.25410.59.81.255
4210.59.82.0/2310.59.82.1 – 10.59.83.25410.59.83.255
4310.59.84.0/2310.59.84.1 – 10.59.85.25410.59.85.255
4410.59.86.0/2310.59.86.1 – 10.59.87.25410.59.87.255
4510.59.88.0/2310.59.88.1 – 10.59.89.25410.59.89.255
4610.59.90.0/2310.59.90.1 – 10.59.91.25410.59.91.255
4710.59.92.0/2310.59.92.1 – 10.59.93.25410.59.93.255
4810.59.94.0/2310.59.94.1 – 10.59.95.25410.59.95.255
4910.59.96.0/2310.59.96.1 – 10.59.97.25410.59.97.255
5010.59.98.0/2310.59.98.1 – 10.59.99.25410.59.99.255
5110.59.100.0/2310.59.100.1 – 10.59.101.25410.59.101.255
5210.59.102.0/2310.59.102.1 – 10.59.103.25410.59.103.255
5310.59.104.0/2310.59.104.1 – 10.59.105.25410.59.105.255
5410.59.106.0/2310.59.106.1 – 10.59.107.25410.59.107.255
5510.59.108.0/2310.59.108.1 – 10.59.109.25410.59.109.255
5610.59.110.0/2310.59.110.1 – 10.59.111.25410.59.111.255
5710.59.112.0/2310.59.112.1 – 10.59.113.25410.59.113.255
5810.59.114.0/2310.59.114.1 – 10.59.115.25410.59.115.255
5910.59.116.0/2310.59.116.1 – 10.59.117.25410.59.117.255
6010.59.118.0/2310.59.118.1 – 10.59.119.25410.59.119.255
6110.59.120.0/2310.59.120.1 – 10.59.121.25410.59.121.255
6210.59.122.0/2310.59.122.1 – 10.59.123.25410.59.123.255
6310.59.124.0/2310.59.124.1 – 10.59.125.25410.59.125.255
6410.59.126.0/2310.59.126.1 – 10.59.127.25410.59.127.255
6510.59.128.0/2310.59.128.1 – 10.59.129.25410.59.129.255
6610.59.130.0/2310.59.130.1 – 10.59.131.25410.59.131.255
6710.59.132.0/2310.59.132.1 – 10.59.133.25410.59.133.255
6810.59.134.0/2310.59.134.1 – 10.59.135.25410.59.135.255
6910.59.136.0/2310.59.136.1 – 10.59.137.25410.59.137.255
7010.59.138.0/2310.59.138.1 – 10.59.139.25410.59.139.255
7110.59.140.0/2310.59.140.1 – 10.59.141.25410.59.141.255
7210.59.142.0/2310.59.142.1 – 10.59.143.25410.59.143.255
7310.59.144.0/2310.59.144.1 – 10.59.145.25410.59.145.255
7410.59.146.0/2310.59.146.1 – 10.59.147.25410.59.147.255
7510.59.148.0/2310.59.148.1 – 10.59.149.25410.59.149.255
7610.59.150.0/2310.59.150.1 – 10.59.151.25410.59.151.255
7710.59.152.0/2310.59.152.1 – 10.59.153.25410.59.153.255
7810.59.154.0/2310.59.154.1 – 10.59.155.25410.59.155.255
7910.59.156.0/2310.59.156.1 – 10.59.157.25410.59.157.255
8010.59.158.0/2310.59.158.1 – 10.59.159.25410.59.159.255
8110.59.160.0/2310.59.160.1 – 10.59.161.25410.59.161.255
8210.59.162.0/2310.59.162.1 – 10.59.163.25410.59.163.255
8310.59.164.0/2310.59.164.1 – 10.59.165.25410.59.165.255
8410.59.166.0/2310.59.166.1 – 10.59.167.25410.59.167.255
8510.59.168.0/2310.59.168.1 – 10.59.169.25410.59.169.255
8610.59.170.0/2310.59.170.1 – 10.59.171.25410.59.171.255
8710.59.172.0/2310.59.172.1 – 10.59.173.25410.59.173.255
8810.59.174.0/2310.59.174.1 – 10.59.175.25410.59.175.255
8910.59.176.0/2310.59.176.1 – 10.59.177.25410.59.177.255
9010.59.178.0/2310.59.178.1 – 10.59.179.25410.59.179.255
9110.59.180.0/2310.59.180.1 – 10.59.181.25410.59.181.255
9210.59.182.0/2310.59.182.1 – 10.59.183.25410.59.183.255
9310.59.184.0/2310.59.184.1 – 10.59.185.25410.59.185.255
9410.59.186.0/2310.59.186.1 – 10.59.187.25410.59.187.255
9510.59.188.0/2310.59.188.1 – 10.59.189.25410.59.189.255
9610.59.190.0/2310.59.190.1 – 10.59.191.25410.59.191.255
9710.59.192.0/2310.59.192.1 – 10.59.193.25410.59.193.255
9810.59.194.0/2310.59.194.1 – 10.59.195.25410.59.195.255
9910.59.196.0/2310.59.196.1 – 10.59.197.25410.59.197.255
10010.59.198.0/2310.59.198.1 – 10.59.199.25410.59.199.255
10110.59.200.0/2310.59.200.1 – 10.59.201.25410.59.201.255
10210.59.202.0/2310.59.202.1 – 10.59.203.25410.59.203.255
10310.59.204.0/2310.59.204.1 – 10.59.205.25410.59.205.255
10410.59.206.0/2310.59.206.1 – 10.59.207.25410.59.207.255
10510.59.208.0/2310.59.208.1 – 10.59.209.25410.59.209.255
10610.59.210.0/2310.59.210.1 – 10.59.211.25410.59.211.255
10710.59.212.0/2310.59.212.1 – 10.59.213.25410.59.213.255
10810.59.214.0/2310.59.214.1 – 10.59.215.25410.59.215.255
10910.59.216.0/2310.59.216.1 – 10.59.217.25410.59.217.255
11010.59.218.0/2310.59.218.1 – 10.59.219.25410.59.219.255
11110.59.220.0/2310.59.220.1 – 10.59.221.25410.59.221.255
11210.59.222.0/2310.59.222.1 – 10.59.223.25410.59.223.255
11310.59.224.0/2310.59.224.1 – 10.59.225.25410.59.225.255
11410.59.226.0/2310.59.226.1 – 10.59.227.25410.59.227.255
11510.59.228.0/2310.59.228.1 – 10.59.229.25410.59.229.255
11610.59.230.0/2310.59.230.1 – 10.59.231.25410.59.231.255
11710.59.232.0/2310.59.232.1 – 10.59.233.25410.59.233.255
11810.59.234.0/2310.59.234.1 – 10.59.235.25410.59.235.255
11910.59.236.0/2310.59.236.1 – 10.59.237.25410.59.237.255
12010.59.238.0/2310.59.238.1 – 10.59.239.25410.59.239.255
12110.59.240.0/2310.59.240.1 – 10.59.241.25410.59.241.255
12210.59.242.0/2310.59.242.1 – 10.59.243.25410.59.243.255
12310.59.244.0/2310.59.244.1 – 10.59.245.25410.59.245.255
12410.59.246.0/2310.59.246.1 – 10.59.247.25410.59.247.255
12510.59.248.0/2310.59.248.1 – 10.59.249.25410.59.249.255
12610.59.250.0/2310.59.250.1 – 10.59.251.25410.59.251.255
12710.59.252.0/2310.59.252.1 – 10.59.253.25410.59.253.255
12810.59.254.0/2310.59.254.1 – 10.59.255.25410.59.255.255
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 →