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)10.68.0.0/16
network10.68.0.0/16
broadcast10.68.255.255
first host10.68.0.1
last host10.68.255.254
subnet mask255.255.0.0
wildcard0.0.255.255
addresses65,536
usable hosts65,534
classA
ipcalc 10.68.0.0/16
address00001010.01000100.00000000.00000000
subnet mask11111111.11111111.00000000.00000000
network00001010.01000100.00000000.00000000
broadcast00001010.01000100.11111111.11111111
green = network part, grey = host part
hex0x0a440000
decimal172228608
reverse dns0.0.68.10.in-addr.arpa
ipv4-mapped::ffff:a44:0

/16 split into /23 · 128 subnets

close ×
#networkhost rangebroadcast
110.68.0.0/2310.68.0.1 – 10.68.1.25410.68.1.255
210.68.2.0/2310.68.2.1 – 10.68.3.25410.68.3.255
310.68.4.0/2310.68.4.1 – 10.68.5.25410.68.5.255
410.68.6.0/2310.68.6.1 – 10.68.7.25410.68.7.255
510.68.8.0/2310.68.8.1 – 10.68.9.25410.68.9.255
610.68.10.0/2310.68.10.1 – 10.68.11.25410.68.11.255
710.68.12.0/2310.68.12.1 – 10.68.13.25410.68.13.255
810.68.14.0/2310.68.14.1 – 10.68.15.25410.68.15.255
910.68.16.0/2310.68.16.1 – 10.68.17.25410.68.17.255
1010.68.18.0/2310.68.18.1 – 10.68.19.25410.68.19.255
1110.68.20.0/2310.68.20.1 – 10.68.21.25410.68.21.255
1210.68.22.0/2310.68.22.1 – 10.68.23.25410.68.23.255
1310.68.24.0/2310.68.24.1 – 10.68.25.25410.68.25.255
1410.68.26.0/2310.68.26.1 – 10.68.27.25410.68.27.255
1510.68.28.0/2310.68.28.1 – 10.68.29.25410.68.29.255
1610.68.30.0/2310.68.30.1 – 10.68.31.25410.68.31.255
1710.68.32.0/2310.68.32.1 – 10.68.33.25410.68.33.255
1810.68.34.0/2310.68.34.1 – 10.68.35.25410.68.35.255
1910.68.36.0/2310.68.36.1 – 10.68.37.25410.68.37.255
2010.68.38.0/2310.68.38.1 – 10.68.39.25410.68.39.255
2110.68.40.0/2310.68.40.1 – 10.68.41.25410.68.41.255
2210.68.42.0/2310.68.42.1 – 10.68.43.25410.68.43.255
2310.68.44.0/2310.68.44.1 – 10.68.45.25410.68.45.255
2410.68.46.0/2310.68.46.1 – 10.68.47.25410.68.47.255
2510.68.48.0/2310.68.48.1 – 10.68.49.25410.68.49.255
2610.68.50.0/2310.68.50.1 – 10.68.51.25410.68.51.255
2710.68.52.0/2310.68.52.1 – 10.68.53.25410.68.53.255
2810.68.54.0/2310.68.54.1 – 10.68.55.25410.68.55.255
2910.68.56.0/2310.68.56.1 – 10.68.57.25410.68.57.255
3010.68.58.0/2310.68.58.1 – 10.68.59.25410.68.59.255
3110.68.60.0/2310.68.60.1 – 10.68.61.25410.68.61.255
3210.68.62.0/2310.68.62.1 – 10.68.63.25410.68.63.255
3310.68.64.0/2310.68.64.1 – 10.68.65.25410.68.65.255
3410.68.66.0/2310.68.66.1 – 10.68.67.25410.68.67.255
3510.68.68.0/2310.68.68.1 – 10.68.69.25410.68.69.255
3610.68.70.0/2310.68.70.1 – 10.68.71.25410.68.71.255
3710.68.72.0/2310.68.72.1 – 10.68.73.25410.68.73.255
3810.68.74.0/2310.68.74.1 – 10.68.75.25410.68.75.255
3910.68.76.0/2310.68.76.1 – 10.68.77.25410.68.77.255
4010.68.78.0/2310.68.78.1 – 10.68.79.25410.68.79.255
4110.68.80.0/2310.68.80.1 – 10.68.81.25410.68.81.255
4210.68.82.0/2310.68.82.1 – 10.68.83.25410.68.83.255
4310.68.84.0/2310.68.84.1 – 10.68.85.25410.68.85.255
4410.68.86.0/2310.68.86.1 – 10.68.87.25410.68.87.255
4510.68.88.0/2310.68.88.1 – 10.68.89.25410.68.89.255
4610.68.90.0/2310.68.90.1 – 10.68.91.25410.68.91.255
4710.68.92.0/2310.68.92.1 – 10.68.93.25410.68.93.255
4810.68.94.0/2310.68.94.1 – 10.68.95.25410.68.95.255
4910.68.96.0/2310.68.96.1 – 10.68.97.25410.68.97.255
5010.68.98.0/2310.68.98.1 – 10.68.99.25410.68.99.255
5110.68.100.0/2310.68.100.1 – 10.68.101.25410.68.101.255
5210.68.102.0/2310.68.102.1 – 10.68.103.25410.68.103.255
5310.68.104.0/2310.68.104.1 – 10.68.105.25410.68.105.255
5410.68.106.0/2310.68.106.1 – 10.68.107.25410.68.107.255
5510.68.108.0/2310.68.108.1 – 10.68.109.25410.68.109.255
5610.68.110.0/2310.68.110.1 – 10.68.111.25410.68.111.255
5710.68.112.0/2310.68.112.1 – 10.68.113.25410.68.113.255
5810.68.114.0/2310.68.114.1 – 10.68.115.25410.68.115.255
5910.68.116.0/2310.68.116.1 – 10.68.117.25410.68.117.255
6010.68.118.0/2310.68.118.1 – 10.68.119.25410.68.119.255
6110.68.120.0/2310.68.120.1 – 10.68.121.25410.68.121.255
6210.68.122.0/2310.68.122.1 – 10.68.123.25410.68.123.255
6310.68.124.0/2310.68.124.1 – 10.68.125.25410.68.125.255
6410.68.126.0/2310.68.126.1 – 10.68.127.25410.68.127.255
6510.68.128.0/2310.68.128.1 – 10.68.129.25410.68.129.255
6610.68.130.0/2310.68.130.1 – 10.68.131.25410.68.131.255
6710.68.132.0/2310.68.132.1 – 10.68.133.25410.68.133.255
6810.68.134.0/2310.68.134.1 – 10.68.135.25410.68.135.255
6910.68.136.0/2310.68.136.1 – 10.68.137.25410.68.137.255
7010.68.138.0/2310.68.138.1 – 10.68.139.25410.68.139.255
7110.68.140.0/2310.68.140.1 – 10.68.141.25410.68.141.255
7210.68.142.0/2310.68.142.1 – 10.68.143.25410.68.143.255
7310.68.144.0/2310.68.144.1 – 10.68.145.25410.68.145.255
7410.68.146.0/2310.68.146.1 – 10.68.147.25410.68.147.255
7510.68.148.0/2310.68.148.1 – 10.68.149.25410.68.149.255
7610.68.150.0/2310.68.150.1 – 10.68.151.25410.68.151.255
7710.68.152.0/2310.68.152.1 – 10.68.153.25410.68.153.255
7810.68.154.0/2310.68.154.1 – 10.68.155.25410.68.155.255
7910.68.156.0/2310.68.156.1 – 10.68.157.25410.68.157.255
8010.68.158.0/2310.68.158.1 – 10.68.159.25410.68.159.255
8110.68.160.0/2310.68.160.1 – 10.68.161.25410.68.161.255
8210.68.162.0/2310.68.162.1 – 10.68.163.25410.68.163.255
8310.68.164.0/2310.68.164.1 – 10.68.165.25410.68.165.255
8410.68.166.0/2310.68.166.1 – 10.68.167.25410.68.167.255
8510.68.168.0/2310.68.168.1 – 10.68.169.25410.68.169.255
8610.68.170.0/2310.68.170.1 – 10.68.171.25410.68.171.255
8710.68.172.0/2310.68.172.1 – 10.68.173.25410.68.173.255
8810.68.174.0/2310.68.174.1 – 10.68.175.25410.68.175.255
8910.68.176.0/2310.68.176.1 – 10.68.177.25410.68.177.255
9010.68.178.0/2310.68.178.1 – 10.68.179.25410.68.179.255
9110.68.180.0/2310.68.180.1 – 10.68.181.25410.68.181.255
9210.68.182.0/2310.68.182.1 – 10.68.183.25410.68.183.255
9310.68.184.0/2310.68.184.1 – 10.68.185.25410.68.185.255
9410.68.186.0/2310.68.186.1 – 10.68.187.25410.68.187.255
9510.68.188.0/2310.68.188.1 – 10.68.189.25410.68.189.255
9610.68.190.0/2310.68.190.1 – 10.68.191.25410.68.191.255
9710.68.192.0/2310.68.192.1 – 10.68.193.25410.68.193.255
9810.68.194.0/2310.68.194.1 – 10.68.195.25410.68.195.255
9910.68.196.0/2310.68.196.1 – 10.68.197.25410.68.197.255
10010.68.198.0/2310.68.198.1 – 10.68.199.25410.68.199.255
10110.68.200.0/2310.68.200.1 – 10.68.201.25410.68.201.255
10210.68.202.0/2310.68.202.1 – 10.68.203.25410.68.203.255
10310.68.204.0/2310.68.204.1 – 10.68.205.25410.68.205.255
10410.68.206.0/2310.68.206.1 – 10.68.207.25410.68.207.255
10510.68.208.0/2310.68.208.1 – 10.68.209.25410.68.209.255
10610.68.210.0/2310.68.210.1 – 10.68.211.25410.68.211.255
10710.68.212.0/2310.68.212.1 – 10.68.213.25410.68.213.255
10810.68.214.0/2310.68.214.1 – 10.68.215.25410.68.215.255
10910.68.216.0/2310.68.216.1 – 10.68.217.25410.68.217.255
11010.68.218.0/2310.68.218.1 – 10.68.219.25410.68.219.255
11110.68.220.0/2310.68.220.1 – 10.68.221.25410.68.221.255
11210.68.222.0/2310.68.222.1 – 10.68.223.25410.68.223.255
11310.68.224.0/2310.68.224.1 – 10.68.225.25410.68.225.255
11410.68.226.0/2310.68.226.1 – 10.68.227.25410.68.227.255
11510.68.228.0/2310.68.228.1 – 10.68.229.25410.68.229.255
11610.68.230.0/2310.68.230.1 – 10.68.231.25410.68.231.255
11710.68.232.0/2310.68.232.1 – 10.68.233.25410.68.233.255
11810.68.234.0/2310.68.234.1 – 10.68.235.25410.68.235.255
11910.68.236.0/2310.68.236.1 – 10.68.237.25410.68.237.255
12010.68.238.0/2310.68.238.1 – 10.68.239.25410.68.239.255
12110.68.240.0/2310.68.240.1 – 10.68.241.25410.68.241.255
12210.68.242.0/2310.68.242.1 – 10.68.243.25410.68.243.255
12310.68.244.0/2310.68.244.1 – 10.68.245.25410.68.245.255
12410.68.246.0/2310.68.246.1 – 10.68.247.25410.68.247.255
12510.68.248.0/2310.68.248.1 – 10.68.249.25410.68.249.255
12610.68.250.0/2310.68.250.1 – 10.68.251.25410.68.251.255
12710.68.252.0/2310.68.252.1 – 10.68.253.25410.68.253.255
12810.68.254.0/2310.68.254.1 – 10.68.255.25410.68.255.255
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 →