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)10.6.0.0/16
network10.6.0.0/16
broadcast10.6.255.255
first host10.6.0.1
last host10.6.255.254
subnet mask255.255.0.0
wildcard0.0.255.255
addresses65,536
usable hosts65,534
classA
ipcalc 10.6.0.0/16
address00001010.00000110.00000000.00000000
subnet mask11111111.11111111.00000000.00000000
network00001010.00000110.00000000.00000000
broadcast00001010.00000110.11111111.11111111
green = network part, grey = host part
hex0x0a060000
decimal168165376
reverse dns0.0.6.10.in-addr.arpa
ipv4-mapped::ffff:a06:0

/16 split into /23 · 128 subnets

close ×
#networkhost rangebroadcast
110.6.0.0/2310.6.0.1 – 10.6.1.25410.6.1.255
210.6.2.0/2310.6.2.1 – 10.6.3.25410.6.3.255
310.6.4.0/2310.6.4.1 – 10.6.5.25410.6.5.255
410.6.6.0/2310.6.6.1 – 10.6.7.25410.6.7.255
510.6.8.0/2310.6.8.1 – 10.6.9.25410.6.9.255
610.6.10.0/2310.6.10.1 – 10.6.11.25410.6.11.255
710.6.12.0/2310.6.12.1 – 10.6.13.25410.6.13.255
810.6.14.0/2310.6.14.1 – 10.6.15.25410.6.15.255
910.6.16.0/2310.6.16.1 – 10.6.17.25410.6.17.255
1010.6.18.0/2310.6.18.1 – 10.6.19.25410.6.19.255
1110.6.20.0/2310.6.20.1 – 10.6.21.25410.6.21.255
1210.6.22.0/2310.6.22.1 – 10.6.23.25410.6.23.255
1310.6.24.0/2310.6.24.1 – 10.6.25.25410.6.25.255
1410.6.26.0/2310.6.26.1 – 10.6.27.25410.6.27.255
1510.6.28.0/2310.6.28.1 – 10.6.29.25410.6.29.255
1610.6.30.0/2310.6.30.1 – 10.6.31.25410.6.31.255
1710.6.32.0/2310.6.32.1 – 10.6.33.25410.6.33.255
1810.6.34.0/2310.6.34.1 – 10.6.35.25410.6.35.255
1910.6.36.0/2310.6.36.1 – 10.6.37.25410.6.37.255
2010.6.38.0/2310.6.38.1 – 10.6.39.25410.6.39.255
2110.6.40.0/2310.6.40.1 – 10.6.41.25410.6.41.255
2210.6.42.0/2310.6.42.1 – 10.6.43.25410.6.43.255
2310.6.44.0/2310.6.44.1 – 10.6.45.25410.6.45.255
2410.6.46.0/2310.6.46.1 – 10.6.47.25410.6.47.255
2510.6.48.0/2310.6.48.1 – 10.6.49.25410.6.49.255
2610.6.50.0/2310.6.50.1 – 10.6.51.25410.6.51.255
2710.6.52.0/2310.6.52.1 – 10.6.53.25410.6.53.255
2810.6.54.0/2310.6.54.1 – 10.6.55.25410.6.55.255
2910.6.56.0/2310.6.56.1 – 10.6.57.25410.6.57.255
3010.6.58.0/2310.6.58.1 – 10.6.59.25410.6.59.255
3110.6.60.0/2310.6.60.1 – 10.6.61.25410.6.61.255
3210.6.62.0/2310.6.62.1 – 10.6.63.25410.6.63.255
3310.6.64.0/2310.6.64.1 – 10.6.65.25410.6.65.255
3410.6.66.0/2310.6.66.1 – 10.6.67.25410.6.67.255
3510.6.68.0/2310.6.68.1 – 10.6.69.25410.6.69.255
3610.6.70.0/2310.6.70.1 – 10.6.71.25410.6.71.255
3710.6.72.0/2310.6.72.1 – 10.6.73.25410.6.73.255
3810.6.74.0/2310.6.74.1 – 10.6.75.25410.6.75.255
3910.6.76.0/2310.6.76.1 – 10.6.77.25410.6.77.255
4010.6.78.0/2310.6.78.1 – 10.6.79.25410.6.79.255
4110.6.80.0/2310.6.80.1 – 10.6.81.25410.6.81.255
4210.6.82.0/2310.6.82.1 – 10.6.83.25410.6.83.255
4310.6.84.0/2310.6.84.1 – 10.6.85.25410.6.85.255
4410.6.86.0/2310.6.86.1 – 10.6.87.25410.6.87.255
4510.6.88.0/2310.6.88.1 – 10.6.89.25410.6.89.255
4610.6.90.0/2310.6.90.1 – 10.6.91.25410.6.91.255
4710.6.92.0/2310.6.92.1 – 10.6.93.25410.6.93.255
4810.6.94.0/2310.6.94.1 – 10.6.95.25410.6.95.255
4910.6.96.0/2310.6.96.1 – 10.6.97.25410.6.97.255
5010.6.98.0/2310.6.98.1 – 10.6.99.25410.6.99.255
5110.6.100.0/2310.6.100.1 – 10.6.101.25410.6.101.255
5210.6.102.0/2310.6.102.1 – 10.6.103.25410.6.103.255
5310.6.104.0/2310.6.104.1 – 10.6.105.25410.6.105.255
5410.6.106.0/2310.6.106.1 – 10.6.107.25410.6.107.255
5510.6.108.0/2310.6.108.1 – 10.6.109.25410.6.109.255
5610.6.110.0/2310.6.110.1 – 10.6.111.25410.6.111.255
5710.6.112.0/2310.6.112.1 – 10.6.113.25410.6.113.255
5810.6.114.0/2310.6.114.1 – 10.6.115.25410.6.115.255
5910.6.116.0/2310.6.116.1 – 10.6.117.25410.6.117.255
6010.6.118.0/2310.6.118.1 – 10.6.119.25410.6.119.255
6110.6.120.0/2310.6.120.1 – 10.6.121.25410.6.121.255
6210.6.122.0/2310.6.122.1 – 10.6.123.25410.6.123.255
6310.6.124.0/2310.6.124.1 – 10.6.125.25410.6.125.255
6410.6.126.0/2310.6.126.1 – 10.6.127.25410.6.127.255
6510.6.128.0/2310.6.128.1 – 10.6.129.25410.6.129.255
6610.6.130.0/2310.6.130.1 – 10.6.131.25410.6.131.255
6710.6.132.0/2310.6.132.1 – 10.6.133.25410.6.133.255
6810.6.134.0/2310.6.134.1 – 10.6.135.25410.6.135.255
6910.6.136.0/2310.6.136.1 – 10.6.137.25410.6.137.255
7010.6.138.0/2310.6.138.1 – 10.6.139.25410.6.139.255
7110.6.140.0/2310.6.140.1 – 10.6.141.25410.6.141.255
7210.6.142.0/2310.6.142.1 – 10.6.143.25410.6.143.255
7310.6.144.0/2310.6.144.1 – 10.6.145.25410.6.145.255
7410.6.146.0/2310.6.146.1 – 10.6.147.25410.6.147.255
7510.6.148.0/2310.6.148.1 – 10.6.149.25410.6.149.255
7610.6.150.0/2310.6.150.1 – 10.6.151.25410.6.151.255
7710.6.152.0/2310.6.152.1 – 10.6.153.25410.6.153.255
7810.6.154.0/2310.6.154.1 – 10.6.155.25410.6.155.255
7910.6.156.0/2310.6.156.1 – 10.6.157.25410.6.157.255
8010.6.158.0/2310.6.158.1 – 10.6.159.25410.6.159.255
8110.6.160.0/2310.6.160.1 – 10.6.161.25410.6.161.255
8210.6.162.0/2310.6.162.1 – 10.6.163.25410.6.163.255
8310.6.164.0/2310.6.164.1 – 10.6.165.25410.6.165.255
8410.6.166.0/2310.6.166.1 – 10.6.167.25410.6.167.255
8510.6.168.0/2310.6.168.1 – 10.6.169.25410.6.169.255
8610.6.170.0/2310.6.170.1 – 10.6.171.25410.6.171.255
8710.6.172.0/2310.6.172.1 – 10.6.173.25410.6.173.255
8810.6.174.0/2310.6.174.1 – 10.6.175.25410.6.175.255
8910.6.176.0/2310.6.176.1 – 10.6.177.25410.6.177.255
9010.6.178.0/2310.6.178.1 – 10.6.179.25410.6.179.255
9110.6.180.0/2310.6.180.1 – 10.6.181.25410.6.181.255
9210.6.182.0/2310.6.182.1 – 10.6.183.25410.6.183.255
9310.6.184.0/2310.6.184.1 – 10.6.185.25410.6.185.255
9410.6.186.0/2310.6.186.1 – 10.6.187.25410.6.187.255
9510.6.188.0/2310.6.188.1 – 10.6.189.25410.6.189.255
9610.6.190.0/2310.6.190.1 – 10.6.191.25410.6.191.255
9710.6.192.0/2310.6.192.1 – 10.6.193.25410.6.193.255
9810.6.194.0/2310.6.194.1 – 10.6.195.25410.6.195.255
9910.6.196.0/2310.6.196.1 – 10.6.197.25410.6.197.255
10010.6.198.0/2310.6.198.1 – 10.6.199.25410.6.199.255
10110.6.200.0/2310.6.200.1 – 10.6.201.25410.6.201.255
10210.6.202.0/2310.6.202.1 – 10.6.203.25410.6.203.255
10310.6.204.0/2310.6.204.1 – 10.6.205.25410.6.205.255
10410.6.206.0/2310.6.206.1 – 10.6.207.25410.6.207.255
10510.6.208.0/2310.6.208.1 – 10.6.209.25410.6.209.255
10610.6.210.0/2310.6.210.1 – 10.6.211.25410.6.211.255
10710.6.212.0/2310.6.212.1 – 10.6.213.25410.6.213.255
10810.6.214.0/2310.6.214.1 – 10.6.215.25410.6.215.255
10910.6.216.0/2310.6.216.1 – 10.6.217.25410.6.217.255
11010.6.218.0/2310.6.218.1 – 10.6.219.25410.6.219.255
11110.6.220.0/2310.6.220.1 – 10.6.221.25410.6.221.255
11210.6.222.0/2310.6.222.1 – 10.6.223.25410.6.223.255
11310.6.224.0/2310.6.224.1 – 10.6.225.25410.6.225.255
11410.6.226.0/2310.6.226.1 – 10.6.227.25410.6.227.255
11510.6.228.0/2310.6.228.1 – 10.6.229.25410.6.229.255
11610.6.230.0/2310.6.230.1 – 10.6.231.25410.6.231.255
11710.6.232.0/2310.6.232.1 – 10.6.233.25410.6.233.255
11810.6.234.0/2310.6.234.1 – 10.6.235.25410.6.235.255
11910.6.236.0/2310.6.236.1 – 10.6.237.25410.6.237.255
12010.6.238.0/2310.6.238.1 – 10.6.239.25410.6.239.255
12110.6.240.0/2310.6.240.1 – 10.6.241.25410.6.241.255
12210.6.242.0/2310.6.242.1 – 10.6.243.25410.6.243.255
12310.6.244.0/2310.6.244.1 – 10.6.245.25410.6.245.255
12410.6.246.0/2310.6.246.1 – 10.6.247.25410.6.247.255
12510.6.248.0/2310.6.248.1 – 10.6.249.25410.6.249.255
12610.6.250.0/2310.6.250.1 – 10.6.251.25410.6.251.255
12710.6.252.0/2310.6.252.1 – 10.6.253.25410.6.253.255
12810.6.254.0/2310.6.254.1 – 10.6.255.25410.6.255.255
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 →