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)10.13.0.0/16
network10.13.0.0/16
broadcast10.13.255.255
first host10.13.0.1
last host10.13.255.254
subnet mask255.255.0.0
wildcard0.0.255.255
addresses65,536
usable hosts65,534
classA
ipcalc 10.13.0.0/16
address00001010.00001101.00000000.00000000
subnet mask11111111.11111111.00000000.00000000
network00001010.00001101.00000000.00000000
broadcast00001010.00001101.11111111.11111111
green = network part, grey = host part
hex0x0a0d0000
decimal168624128
reverse dns0.0.13.10.in-addr.arpa
ipv4-mapped::ffff:a0d:0

/16 split into /23 · 128 subnets

close ×
#networkhost rangebroadcast
110.13.0.0/2310.13.0.1 – 10.13.1.25410.13.1.255
210.13.2.0/2310.13.2.1 – 10.13.3.25410.13.3.255
310.13.4.0/2310.13.4.1 – 10.13.5.25410.13.5.255
410.13.6.0/2310.13.6.1 – 10.13.7.25410.13.7.255
510.13.8.0/2310.13.8.1 – 10.13.9.25410.13.9.255
610.13.10.0/2310.13.10.1 – 10.13.11.25410.13.11.255
710.13.12.0/2310.13.12.1 – 10.13.13.25410.13.13.255
810.13.14.0/2310.13.14.1 – 10.13.15.25410.13.15.255
910.13.16.0/2310.13.16.1 – 10.13.17.25410.13.17.255
1010.13.18.0/2310.13.18.1 – 10.13.19.25410.13.19.255
1110.13.20.0/2310.13.20.1 – 10.13.21.25410.13.21.255
1210.13.22.0/2310.13.22.1 – 10.13.23.25410.13.23.255
1310.13.24.0/2310.13.24.1 – 10.13.25.25410.13.25.255
1410.13.26.0/2310.13.26.1 – 10.13.27.25410.13.27.255
1510.13.28.0/2310.13.28.1 – 10.13.29.25410.13.29.255
1610.13.30.0/2310.13.30.1 – 10.13.31.25410.13.31.255
1710.13.32.0/2310.13.32.1 – 10.13.33.25410.13.33.255
1810.13.34.0/2310.13.34.1 – 10.13.35.25410.13.35.255
1910.13.36.0/2310.13.36.1 – 10.13.37.25410.13.37.255
2010.13.38.0/2310.13.38.1 – 10.13.39.25410.13.39.255
2110.13.40.0/2310.13.40.1 – 10.13.41.25410.13.41.255
2210.13.42.0/2310.13.42.1 – 10.13.43.25410.13.43.255
2310.13.44.0/2310.13.44.1 – 10.13.45.25410.13.45.255
2410.13.46.0/2310.13.46.1 – 10.13.47.25410.13.47.255
2510.13.48.0/2310.13.48.1 – 10.13.49.25410.13.49.255
2610.13.50.0/2310.13.50.1 – 10.13.51.25410.13.51.255
2710.13.52.0/2310.13.52.1 – 10.13.53.25410.13.53.255
2810.13.54.0/2310.13.54.1 – 10.13.55.25410.13.55.255
2910.13.56.0/2310.13.56.1 – 10.13.57.25410.13.57.255
3010.13.58.0/2310.13.58.1 – 10.13.59.25410.13.59.255
3110.13.60.0/2310.13.60.1 – 10.13.61.25410.13.61.255
3210.13.62.0/2310.13.62.1 – 10.13.63.25410.13.63.255
3310.13.64.0/2310.13.64.1 – 10.13.65.25410.13.65.255
3410.13.66.0/2310.13.66.1 – 10.13.67.25410.13.67.255
3510.13.68.0/2310.13.68.1 – 10.13.69.25410.13.69.255
3610.13.70.0/2310.13.70.1 – 10.13.71.25410.13.71.255
3710.13.72.0/2310.13.72.1 – 10.13.73.25410.13.73.255
3810.13.74.0/2310.13.74.1 – 10.13.75.25410.13.75.255
3910.13.76.0/2310.13.76.1 – 10.13.77.25410.13.77.255
4010.13.78.0/2310.13.78.1 – 10.13.79.25410.13.79.255
4110.13.80.0/2310.13.80.1 – 10.13.81.25410.13.81.255
4210.13.82.0/2310.13.82.1 – 10.13.83.25410.13.83.255
4310.13.84.0/2310.13.84.1 – 10.13.85.25410.13.85.255
4410.13.86.0/2310.13.86.1 – 10.13.87.25410.13.87.255
4510.13.88.0/2310.13.88.1 – 10.13.89.25410.13.89.255
4610.13.90.0/2310.13.90.1 – 10.13.91.25410.13.91.255
4710.13.92.0/2310.13.92.1 – 10.13.93.25410.13.93.255
4810.13.94.0/2310.13.94.1 – 10.13.95.25410.13.95.255
4910.13.96.0/2310.13.96.1 – 10.13.97.25410.13.97.255
5010.13.98.0/2310.13.98.1 – 10.13.99.25410.13.99.255
5110.13.100.0/2310.13.100.1 – 10.13.101.25410.13.101.255
5210.13.102.0/2310.13.102.1 – 10.13.103.25410.13.103.255
5310.13.104.0/2310.13.104.1 – 10.13.105.25410.13.105.255
5410.13.106.0/2310.13.106.1 – 10.13.107.25410.13.107.255
5510.13.108.0/2310.13.108.1 – 10.13.109.25410.13.109.255
5610.13.110.0/2310.13.110.1 – 10.13.111.25410.13.111.255
5710.13.112.0/2310.13.112.1 – 10.13.113.25410.13.113.255
5810.13.114.0/2310.13.114.1 – 10.13.115.25410.13.115.255
5910.13.116.0/2310.13.116.1 – 10.13.117.25410.13.117.255
6010.13.118.0/2310.13.118.1 – 10.13.119.25410.13.119.255
6110.13.120.0/2310.13.120.1 – 10.13.121.25410.13.121.255
6210.13.122.0/2310.13.122.1 – 10.13.123.25410.13.123.255
6310.13.124.0/2310.13.124.1 – 10.13.125.25410.13.125.255
6410.13.126.0/2310.13.126.1 – 10.13.127.25410.13.127.255
6510.13.128.0/2310.13.128.1 – 10.13.129.25410.13.129.255
6610.13.130.0/2310.13.130.1 – 10.13.131.25410.13.131.255
6710.13.132.0/2310.13.132.1 – 10.13.133.25410.13.133.255
6810.13.134.0/2310.13.134.1 – 10.13.135.25410.13.135.255
6910.13.136.0/2310.13.136.1 – 10.13.137.25410.13.137.255
7010.13.138.0/2310.13.138.1 – 10.13.139.25410.13.139.255
7110.13.140.0/2310.13.140.1 – 10.13.141.25410.13.141.255
7210.13.142.0/2310.13.142.1 – 10.13.143.25410.13.143.255
7310.13.144.0/2310.13.144.1 – 10.13.145.25410.13.145.255
7410.13.146.0/2310.13.146.1 – 10.13.147.25410.13.147.255
7510.13.148.0/2310.13.148.1 – 10.13.149.25410.13.149.255
7610.13.150.0/2310.13.150.1 – 10.13.151.25410.13.151.255
7710.13.152.0/2310.13.152.1 – 10.13.153.25410.13.153.255
7810.13.154.0/2310.13.154.1 – 10.13.155.25410.13.155.255
7910.13.156.0/2310.13.156.1 – 10.13.157.25410.13.157.255
8010.13.158.0/2310.13.158.1 – 10.13.159.25410.13.159.255
8110.13.160.0/2310.13.160.1 – 10.13.161.25410.13.161.255
8210.13.162.0/2310.13.162.1 – 10.13.163.25410.13.163.255
8310.13.164.0/2310.13.164.1 – 10.13.165.25410.13.165.255
8410.13.166.0/2310.13.166.1 – 10.13.167.25410.13.167.255
8510.13.168.0/2310.13.168.1 – 10.13.169.25410.13.169.255
8610.13.170.0/2310.13.170.1 – 10.13.171.25410.13.171.255
8710.13.172.0/2310.13.172.1 – 10.13.173.25410.13.173.255
8810.13.174.0/2310.13.174.1 – 10.13.175.25410.13.175.255
8910.13.176.0/2310.13.176.1 – 10.13.177.25410.13.177.255
9010.13.178.0/2310.13.178.1 – 10.13.179.25410.13.179.255
9110.13.180.0/2310.13.180.1 – 10.13.181.25410.13.181.255
9210.13.182.0/2310.13.182.1 – 10.13.183.25410.13.183.255
9310.13.184.0/2310.13.184.1 – 10.13.185.25410.13.185.255
9410.13.186.0/2310.13.186.1 – 10.13.187.25410.13.187.255
9510.13.188.0/2310.13.188.1 – 10.13.189.25410.13.189.255
9610.13.190.0/2310.13.190.1 – 10.13.191.25410.13.191.255
9710.13.192.0/2310.13.192.1 – 10.13.193.25410.13.193.255
9810.13.194.0/2310.13.194.1 – 10.13.195.25410.13.195.255
9910.13.196.0/2310.13.196.1 – 10.13.197.25410.13.197.255
10010.13.198.0/2310.13.198.1 – 10.13.199.25410.13.199.255
10110.13.200.0/2310.13.200.1 – 10.13.201.25410.13.201.255
10210.13.202.0/2310.13.202.1 – 10.13.203.25410.13.203.255
10310.13.204.0/2310.13.204.1 – 10.13.205.25410.13.205.255
10410.13.206.0/2310.13.206.1 – 10.13.207.25410.13.207.255
10510.13.208.0/2310.13.208.1 – 10.13.209.25410.13.209.255
10610.13.210.0/2310.13.210.1 – 10.13.211.25410.13.211.255
10710.13.212.0/2310.13.212.1 – 10.13.213.25410.13.213.255
10810.13.214.0/2310.13.214.1 – 10.13.215.25410.13.215.255
10910.13.216.0/2310.13.216.1 – 10.13.217.25410.13.217.255
11010.13.218.0/2310.13.218.1 – 10.13.219.25410.13.219.255
11110.13.220.0/2310.13.220.1 – 10.13.221.25410.13.221.255
11210.13.222.0/2310.13.222.1 – 10.13.223.25410.13.223.255
11310.13.224.0/2310.13.224.1 – 10.13.225.25410.13.225.255
11410.13.226.0/2310.13.226.1 – 10.13.227.25410.13.227.255
11510.13.228.0/2310.13.228.1 – 10.13.229.25410.13.229.255
11610.13.230.0/2310.13.230.1 – 10.13.231.25410.13.231.255
11710.13.232.0/2310.13.232.1 – 10.13.233.25410.13.233.255
11810.13.234.0/2310.13.234.1 – 10.13.235.25410.13.235.255
11910.13.236.0/2310.13.236.1 – 10.13.237.25410.13.237.255
12010.13.238.0/2310.13.238.1 – 10.13.239.25410.13.239.255
12110.13.240.0/2310.13.240.1 – 10.13.241.25410.13.241.255
12210.13.242.0/2310.13.242.1 – 10.13.243.25410.13.243.255
12310.13.244.0/2310.13.244.1 – 10.13.245.25410.13.245.255
12410.13.246.0/2310.13.246.1 – 10.13.247.25410.13.247.255
12510.13.248.0/2310.13.248.1 – 10.13.249.25410.13.249.255
12610.13.250.0/2310.13.250.1 – 10.13.251.25410.13.251.255
12710.13.252.0/2310.13.252.1 – 10.13.253.25410.13.253.255
12810.13.254.0/2310.13.254.1 – 10.13.255.25410.13.255.255
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 →