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)10.7.0.0/16
network10.7.0.0/16
broadcast10.7.255.255
first host10.7.0.1
last host10.7.255.254
subnet mask255.255.0.0
wildcard0.0.255.255
addresses65,536
usable hosts65,534
classA
ipcalc 10.7.0.0/16
address00001010.00000111.00000000.00000000
subnet mask11111111.11111111.00000000.00000000
network00001010.00000111.00000000.00000000
broadcast00001010.00000111.11111111.11111111
green = network part, grey = host part
hex0x0a070000
decimal168230912
reverse dns0.0.7.10.in-addr.arpa
ipv4-mapped::ffff:a07:0

/16 split into /23 · 128 subnets

close ×
#networkhost rangebroadcast
110.7.0.0/2310.7.0.1 – 10.7.1.25410.7.1.255
210.7.2.0/2310.7.2.1 – 10.7.3.25410.7.3.255
310.7.4.0/2310.7.4.1 – 10.7.5.25410.7.5.255
410.7.6.0/2310.7.6.1 – 10.7.7.25410.7.7.255
510.7.8.0/2310.7.8.1 – 10.7.9.25410.7.9.255
610.7.10.0/2310.7.10.1 – 10.7.11.25410.7.11.255
710.7.12.0/2310.7.12.1 – 10.7.13.25410.7.13.255
810.7.14.0/2310.7.14.1 – 10.7.15.25410.7.15.255
910.7.16.0/2310.7.16.1 – 10.7.17.25410.7.17.255
1010.7.18.0/2310.7.18.1 – 10.7.19.25410.7.19.255
1110.7.20.0/2310.7.20.1 – 10.7.21.25410.7.21.255
1210.7.22.0/2310.7.22.1 – 10.7.23.25410.7.23.255
1310.7.24.0/2310.7.24.1 – 10.7.25.25410.7.25.255
1410.7.26.0/2310.7.26.1 – 10.7.27.25410.7.27.255
1510.7.28.0/2310.7.28.1 – 10.7.29.25410.7.29.255
1610.7.30.0/2310.7.30.1 – 10.7.31.25410.7.31.255
1710.7.32.0/2310.7.32.1 – 10.7.33.25410.7.33.255
1810.7.34.0/2310.7.34.1 – 10.7.35.25410.7.35.255
1910.7.36.0/2310.7.36.1 – 10.7.37.25410.7.37.255
2010.7.38.0/2310.7.38.1 – 10.7.39.25410.7.39.255
2110.7.40.0/2310.7.40.1 – 10.7.41.25410.7.41.255
2210.7.42.0/2310.7.42.1 – 10.7.43.25410.7.43.255
2310.7.44.0/2310.7.44.1 – 10.7.45.25410.7.45.255
2410.7.46.0/2310.7.46.1 – 10.7.47.25410.7.47.255
2510.7.48.0/2310.7.48.1 – 10.7.49.25410.7.49.255
2610.7.50.0/2310.7.50.1 – 10.7.51.25410.7.51.255
2710.7.52.0/2310.7.52.1 – 10.7.53.25410.7.53.255
2810.7.54.0/2310.7.54.1 – 10.7.55.25410.7.55.255
2910.7.56.0/2310.7.56.1 – 10.7.57.25410.7.57.255
3010.7.58.0/2310.7.58.1 – 10.7.59.25410.7.59.255
3110.7.60.0/2310.7.60.1 – 10.7.61.25410.7.61.255
3210.7.62.0/2310.7.62.1 – 10.7.63.25410.7.63.255
3310.7.64.0/2310.7.64.1 – 10.7.65.25410.7.65.255
3410.7.66.0/2310.7.66.1 – 10.7.67.25410.7.67.255
3510.7.68.0/2310.7.68.1 – 10.7.69.25410.7.69.255
3610.7.70.0/2310.7.70.1 – 10.7.71.25410.7.71.255
3710.7.72.0/2310.7.72.1 – 10.7.73.25410.7.73.255
3810.7.74.0/2310.7.74.1 – 10.7.75.25410.7.75.255
3910.7.76.0/2310.7.76.1 – 10.7.77.25410.7.77.255
4010.7.78.0/2310.7.78.1 – 10.7.79.25410.7.79.255
4110.7.80.0/2310.7.80.1 – 10.7.81.25410.7.81.255
4210.7.82.0/2310.7.82.1 – 10.7.83.25410.7.83.255
4310.7.84.0/2310.7.84.1 – 10.7.85.25410.7.85.255
4410.7.86.0/2310.7.86.1 – 10.7.87.25410.7.87.255
4510.7.88.0/2310.7.88.1 – 10.7.89.25410.7.89.255
4610.7.90.0/2310.7.90.1 – 10.7.91.25410.7.91.255
4710.7.92.0/2310.7.92.1 – 10.7.93.25410.7.93.255
4810.7.94.0/2310.7.94.1 – 10.7.95.25410.7.95.255
4910.7.96.0/2310.7.96.1 – 10.7.97.25410.7.97.255
5010.7.98.0/2310.7.98.1 – 10.7.99.25410.7.99.255
5110.7.100.0/2310.7.100.1 – 10.7.101.25410.7.101.255
5210.7.102.0/2310.7.102.1 – 10.7.103.25410.7.103.255
5310.7.104.0/2310.7.104.1 – 10.7.105.25410.7.105.255
5410.7.106.0/2310.7.106.1 – 10.7.107.25410.7.107.255
5510.7.108.0/2310.7.108.1 – 10.7.109.25410.7.109.255
5610.7.110.0/2310.7.110.1 – 10.7.111.25410.7.111.255
5710.7.112.0/2310.7.112.1 – 10.7.113.25410.7.113.255
5810.7.114.0/2310.7.114.1 – 10.7.115.25410.7.115.255
5910.7.116.0/2310.7.116.1 – 10.7.117.25410.7.117.255
6010.7.118.0/2310.7.118.1 – 10.7.119.25410.7.119.255
6110.7.120.0/2310.7.120.1 – 10.7.121.25410.7.121.255
6210.7.122.0/2310.7.122.1 – 10.7.123.25410.7.123.255
6310.7.124.0/2310.7.124.1 – 10.7.125.25410.7.125.255
6410.7.126.0/2310.7.126.1 – 10.7.127.25410.7.127.255
6510.7.128.0/2310.7.128.1 – 10.7.129.25410.7.129.255
6610.7.130.0/2310.7.130.1 – 10.7.131.25410.7.131.255
6710.7.132.0/2310.7.132.1 – 10.7.133.25410.7.133.255
6810.7.134.0/2310.7.134.1 – 10.7.135.25410.7.135.255
6910.7.136.0/2310.7.136.1 – 10.7.137.25410.7.137.255
7010.7.138.0/2310.7.138.1 – 10.7.139.25410.7.139.255
7110.7.140.0/2310.7.140.1 – 10.7.141.25410.7.141.255
7210.7.142.0/2310.7.142.1 – 10.7.143.25410.7.143.255
7310.7.144.0/2310.7.144.1 – 10.7.145.25410.7.145.255
7410.7.146.0/2310.7.146.1 – 10.7.147.25410.7.147.255
7510.7.148.0/2310.7.148.1 – 10.7.149.25410.7.149.255
7610.7.150.0/2310.7.150.1 – 10.7.151.25410.7.151.255
7710.7.152.0/2310.7.152.1 – 10.7.153.25410.7.153.255
7810.7.154.0/2310.7.154.1 – 10.7.155.25410.7.155.255
7910.7.156.0/2310.7.156.1 – 10.7.157.25410.7.157.255
8010.7.158.0/2310.7.158.1 – 10.7.159.25410.7.159.255
8110.7.160.0/2310.7.160.1 – 10.7.161.25410.7.161.255
8210.7.162.0/2310.7.162.1 – 10.7.163.25410.7.163.255
8310.7.164.0/2310.7.164.1 – 10.7.165.25410.7.165.255
8410.7.166.0/2310.7.166.1 – 10.7.167.25410.7.167.255
8510.7.168.0/2310.7.168.1 – 10.7.169.25410.7.169.255
8610.7.170.0/2310.7.170.1 – 10.7.171.25410.7.171.255
8710.7.172.0/2310.7.172.1 – 10.7.173.25410.7.173.255
8810.7.174.0/2310.7.174.1 – 10.7.175.25410.7.175.255
8910.7.176.0/2310.7.176.1 – 10.7.177.25410.7.177.255
9010.7.178.0/2310.7.178.1 – 10.7.179.25410.7.179.255
9110.7.180.0/2310.7.180.1 – 10.7.181.25410.7.181.255
9210.7.182.0/2310.7.182.1 – 10.7.183.25410.7.183.255
9310.7.184.0/2310.7.184.1 – 10.7.185.25410.7.185.255
9410.7.186.0/2310.7.186.1 – 10.7.187.25410.7.187.255
9510.7.188.0/2310.7.188.1 – 10.7.189.25410.7.189.255
9610.7.190.0/2310.7.190.1 – 10.7.191.25410.7.191.255
9710.7.192.0/2310.7.192.1 – 10.7.193.25410.7.193.255
9810.7.194.0/2310.7.194.1 – 10.7.195.25410.7.195.255
9910.7.196.0/2310.7.196.1 – 10.7.197.25410.7.197.255
10010.7.198.0/2310.7.198.1 – 10.7.199.25410.7.199.255
10110.7.200.0/2310.7.200.1 – 10.7.201.25410.7.201.255
10210.7.202.0/2310.7.202.1 – 10.7.203.25410.7.203.255
10310.7.204.0/2310.7.204.1 – 10.7.205.25410.7.205.255
10410.7.206.0/2310.7.206.1 – 10.7.207.25410.7.207.255
10510.7.208.0/2310.7.208.1 – 10.7.209.25410.7.209.255
10610.7.210.0/2310.7.210.1 – 10.7.211.25410.7.211.255
10710.7.212.0/2310.7.212.1 – 10.7.213.25410.7.213.255
10810.7.214.0/2310.7.214.1 – 10.7.215.25410.7.215.255
10910.7.216.0/2310.7.216.1 – 10.7.217.25410.7.217.255
11010.7.218.0/2310.7.218.1 – 10.7.219.25410.7.219.255
11110.7.220.0/2310.7.220.1 – 10.7.221.25410.7.221.255
11210.7.222.0/2310.7.222.1 – 10.7.223.25410.7.223.255
11310.7.224.0/2310.7.224.1 – 10.7.225.25410.7.225.255
11410.7.226.0/2310.7.226.1 – 10.7.227.25410.7.227.255
11510.7.228.0/2310.7.228.1 – 10.7.229.25410.7.229.255
11610.7.230.0/2310.7.230.1 – 10.7.231.25410.7.231.255
11710.7.232.0/2310.7.232.1 – 10.7.233.25410.7.233.255
11810.7.234.0/2310.7.234.1 – 10.7.235.25410.7.235.255
11910.7.236.0/2310.7.236.1 – 10.7.237.25410.7.237.255
12010.7.238.0/2310.7.238.1 – 10.7.239.25410.7.239.255
12110.7.240.0/2310.7.240.1 – 10.7.241.25410.7.241.255
12210.7.242.0/2310.7.242.1 – 10.7.243.25410.7.243.255
12310.7.244.0/2310.7.244.1 – 10.7.245.25410.7.245.255
12410.7.246.0/2310.7.246.1 – 10.7.247.25410.7.247.255
12510.7.248.0/2310.7.248.1 – 10.7.249.25410.7.249.255
12610.7.250.0/2310.7.250.1 – 10.7.251.25410.7.251.255
12710.7.252.0/2310.7.252.1 – 10.7.253.25410.7.253.255
12810.7.254.0/2310.7.254.1 – 10.7.255.25410.7.255.255
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 →