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)10.122.0.0/16
network10.122.0.0/16
broadcast10.122.255.255
first host10.122.0.1
last host10.122.255.254
subnet mask255.255.0.0
wildcard0.0.255.255
addresses65,536
usable hosts65,534
classA
ipcalc 10.122.0.0/16
address00001010.01111010.00000000.00000000
subnet mask11111111.11111111.00000000.00000000
network00001010.01111010.00000000.00000000
broadcast00001010.01111010.11111111.11111111
green = network part, grey = host part
hex0x0a7a0000
decimal175767552
reverse dns0.0.122.10.in-addr.arpa
ipv4-mapped::ffff:a7a:0

/16 split into /23 · 128 subnets

close ×
#networkhost rangebroadcast
110.122.0.0/2310.122.0.1 – 10.122.1.25410.122.1.255
210.122.2.0/2310.122.2.1 – 10.122.3.25410.122.3.255
310.122.4.0/2310.122.4.1 – 10.122.5.25410.122.5.255
410.122.6.0/2310.122.6.1 – 10.122.7.25410.122.7.255
510.122.8.0/2310.122.8.1 – 10.122.9.25410.122.9.255
610.122.10.0/2310.122.10.1 – 10.122.11.25410.122.11.255
710.122.12.0/2310.122.12.1 – 10.122.13.25410.122.13.255
810.122.14.0/2310.122.14.1 – 10.122.15.25410.122.15.255
910.122.16.0/2310.122.16.1 – 10.122.17.25410.122.17.255
1010.122.18.0/2310.122.18.1 – 10.122.19.25410.122.19.255
1110.122.20.0/2310.122.20.1 – 10.122.21.25410.122.21.255
1210.122.22.0/2310.122.22.1 – 10.122.23.25410.122.23.255
1310.122.24.0/2310.122.24.1 – 10.122.25.25410.122.25.255
1410.122.26.0/2310.122.26.1 – 10.122.27.25410.122.27.255
1510.122.28.0/2310.122.28.1 – 10.122.29.25410.122.29.255
1610.122.30.0/2310.122.30.1 – 10.122.31.25410.122.31.255
1710.122.32.0/2310.122.32.1 – 10.122.33.25410.122.33.255
1810.122.34.0/2310.122.34.1 – 10.122.35.25410.122.35.255
1910.122.36.0/2310.122.36.1 – 10.122.37.25410.122.37.255
2010.122.38.0/2310.122.38.1 – 10.122.39.25410.122.39.255
2110.122.40.0/2310.122.40.1 – 10.122.41.25410.122.41.255
2210.122.42.0/2310.122.42.1 – 10.122.43.25410.122.43.255
2310.122.44.0/2310.122.44.1 – 10.122.45.25410.122.45.255
2410.122.46.0/2310.122.46.1 – 10.122.47.25410.122.47.255
2510.122.48.0/2310.122.48.1 – 10.122.49.25410.122.49.255
2610.122.50.0/2310.122.50.1 – 10.122.51.25410.122.51.255
2710.122.52.0/2310.122.52.1 – 10.122.53.25410.122.53.255
2810.122.54.0/2310.122.54.1 – 10.122.55.25410.122.55.255
2910.122.56.0/2310.122.56.1 – 10.122.57.25410.122.57.255
3010.122.58.0/2310.122.58.1 – 10.122.59.25410.122.59.255
3110.122.60.0/2310.122.60.1 – 10.122.61.25410.122.61.255
3210.122.62.0/2310.122.62.1 – 10.122.63.25410.122.63.255
3310.122.64.0/2310.122.64.1 – 10.122.65.25410.122.65.255
3410.122.66.0/2310.122.66.1 – 10.122.67.25410.122.67.255
3510.122.68.0/2310.122.68.1 – 10.122.69.25410.122.69.255
3610.122.70.0/2310.122.70.1 – 10.122.71.25410.122.71.255
3710.122.72.0/2310.122.72.1 – 10.122.73.25410.122.73.255
3810.122.74.0/2310.122.74.1 – 10.122.75.25410.122.75.255
3910.122.76.0/2310.122.76.1 – 10.122.77.25410.122.77.255
4010.122.78.0/2310.122.78.1 – 10.122.79.25410.122.79.255
4110.122.80.0/2310.122.80.1 – 10.122.81.25410.122.81.255
4210.122.82.0/2310.122.82.1 – 10.122.83.25410.122.83.255
4310.122.84.0/2310.122.84.1 – 10.122.85.25410.122.85.255
4410.122.86.0/2310.122.86.1 – 10.122.87.25410.122.87.255
4510.122.88.0/2310.122.88.1 – 10.122.89.25410.122.89.255
4610.122.90.0/2310.122.90.1 – 10.122.91.25410.122.91.255
4710.122.92.0/2310.122.92.1 – 10.122.93.25410.122.93.255
4810.122.94.0/2310.122.94.1 – 10.122.95.25410.122.95.255
4910.122.96.0/2310.122.96.1 – 10.122.97.25410.122.97.255
5010.122.98.0/2310.122.98.1 – 10.122.99.25410.122.99.255
5110.122.100.0/2310.122.100.1 – 10.122.101.25410.122.101.255
5210.122.102.0/2310.122.102.1 – 10.122.103.25410.122.103.255
5310.122.104.0/2310.122.104.1 – 10.122.105.25410.122.105.255
5410.122.106.0/2310.122.106.1 – 10.122.107.25410.122.107.255
5510.122.108.0/2310.122.108.1 – 10.122.109.25410.122.109.255
5610.122.110.0/2310.122.110.1 – 10.122.111.25410.122.111.255
5710.122.112.0/2310.122.112.1 – 10.122.113.25410.122.113.255
5810.122.114.0/2310.122.114.1 – 10.122.115.25410.122.115.255
5910.122.116.0/2310.122.116.1 – 10.122.117.25410.122.117.255
6010.122.118.0/2310.122.118.1 – 10.122.119.25410.122.119.255
6110.122.120.0/2310.122.120.1 – 10.122.121.25410.122.121.255
6210.122.122.0/2310.122.122.1 – 10.122.123.25410.122.123.255
6310.122.124.0/2310.122.124.1 – 10.122.125.25410.122.125.255
6410.122.126.0/2310.122.126.1 – 10.122.127.25410.122.127.255
6510.122.128.0/2310.122.128.1 – 10.122.129.25410.122.129.255
6610.122.130.0/2310.122.130.1 – 10.122.131.25410.122.131.255
6710.122.132.0/2310.122.132.1 – 10.122.133.25410.122.133.255
6810.122.134.0/2310.122.134.1 – 10.122.135.25410.122.135.255
6910.122.136.0/2310.122.136.1 – 10.122.137.25410.122.137.255
7010.122.138.0/2310.122.138.1 – 10.122.139.25410.122.139.255
7110.122.140.0/2310.122.140.1 – 10.122.141.25410.122.141.255
7210.122.142.0/2310.122.142.1 – 10.122.143.25410.122.143.255
7310.122.144.0/2310.122.144.1 – 10.122.145.25410.122.145.255
7410.122.146.0/2310.122.146.1 – 10.122.147.25410.122.147.255
7510.122.148.0/2310.122.148.1 – 10.122.149.25410.122.149.255
7610.122.150.0/2310.122.150.1 – 10.122.151.25410.122.151.255
7710.122.152.0/2310.122.152.1 – 10.122.153.25410.122.153.255
7810.122.154.0/2310.122.154.1 – 10.122.155.25410.122.155.255
7910.122.156.0/2310.122.156.1 – 10.122.157.25410.122.157.255
8010.122.158.0/2310.122.158.1 – 10.122.159.25410.122.159.255
8110.122.160.0/2310.122.160.1 – 10.122.161.25410.122.161.255
8210.122.162.0/2310.122.162.1 – 10.122.163.25410.122.163.255
8310.122.164.0/2310.122.164.1 – 10.122.165.25410.122.165.255
8410.122.166.0/2310.122.166.1 – 10.122.167.25410.122.167.255
8510.122.168.0/2310.122.168.1 – 10.122.169.25410.122.169.255
8610.122.170.0/2310.122.170.1 – 10.122.171.25410.122.171.255
8710.122.172.0/2310.122.172.1 – 10.122.173.25410.122.173.255
8810.122.174.0/2310.122.174.1 – 10.122.175.25410.122.175.255
8910.122.176.0/2310.122.176.1 – 10.122.177.25410.122.177.255
9010.122.178.0/2310.122.178.1 – 10.122.179.25410.122.179.255
9110.122.180.0/2310.122.180.1 – 10.122.181.25410.122.181.255
9210.122.182.0/2310.122.182.1 – 10.122.183.25410.122.183.255
9310.122.184.0/2310.122.184.1 – 10.122.185.25410.122.185.255
9410.122.186.0/2310.122.186.1 – 10.122.187.25410.122.187.255
9510.122.188.0/2310.122.188.1 – 10.122.189.25410.122.189.255
9610.122.190.0/2310.122.190.1 – 10.122.191.25410.122.191.255
9710.122.192.0/2310.122.192.1 – 10.122.193.25410.122.193.255
9810.122.194.0/2310.122.194.1 – 10.122.195.25410.122.195.255
9910.122.196.0/2310.122.196.1 – 10.122.197.25410.122.197.255
10010.122.198.0/2310.122.198.1 – 10.122.199.25410.122.199.255
10110.122.200.0/2310.122.200.1 – 10.122.201.25410.122.201.255
10210.122.202.0/2310.122.202.1 – 10.122.203.25410.122.203.255
10310.122.204.0/2310.122.204.1 – 10.122.205.25410.122.205.255
10410.122.206.0/2310.122.206.1 – 10.122.207.25410.122.207.255
10510.122.208.0/2310.122.208.1 – 10.122.209.25410.122.209.255
10610.122.210.0/2310.122.210.1 – 10.122.211.25410.122.211.255
10710.122.212.0/2310.122.212.1 – 10.122.213.25410.122.213.255
10810.122.214.0/2310.122.214.1 – 10.122.215.25410.122.215.255
10910.122.216.0/2310.122.216.1 – 10.122.217.25410.122.217.255
11010.122.218.0/2310.122.218.1 – 10.122.219.25410.122.219.255
11110.122.220.0/2310.122.220.1 – 10.122.221.25410.122.221.255
11210.122.222.0/2310.122.222.1 – 10.122.223.25410.122.223.255
11310.122.224.0/2310.122.224.1 – 10.122.225.25410.122.225.255
11410.122.226.0/2310.122.226.1 – 10.122.227.25410.122.227.255
11510.122.228.0/2310.122.228.1 – 10.122.229.25410.122.229.255
11610.122.230.0/2310.122.230.1 – 10.122.231.25410.122.231.255
11710.122.232.0/2310.122.232.1 – 10.122.233.25410.122.233.255
11810.122.234.0/2310.122.234.1 – 10.122.235.25410.122.235.255
11910.122.236.0/2310.122.236.1 – 10.122.237.25410.122.237.255
12010.122.238.0/2310.122.238.1 – 10.122.239.25410.122.239.255
12110.122.240.0/2310.122.240.1 – 10.122.241.25410.122.241.255
12210.122.242.0/2310.122.242.1 – 10.122.243.25410.122.243.255
12310.122.244.0/2310.122.244.1 – 10.122.245.25410.122.245.255
12410.122.246.0/2310.122.246.1 – 10.122.247.25410.122.247.255
12510.122.248.0/2310.122.248.1 – 10.122.249.25410.122.249.255
12610.122.250.0/2310.122.250.1 – 10.122.251.25410.122.251.255
12710.122.252.0/2310.122.252.1 – 10.122.253.25410.122.253.255
12810.122.254.0/2310.122.254.1 – 10.122.255.25410.122.255.255
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 →