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)10.163.0.0/16
network10.163.0.0/16
broadcast10.163.255.255
first host10.163.0.1
last host10.163.255.254
subnet mask255.255.0.0
wildcard0.0.255.255
addresses65,536
usable hosts65,534
classA
ipcalc 10.163.0.0/16
address00001010.10100011.00000000.00000000
subnet mask11111111.11111111.00000000.00000000
network00001010.10100011.00000000.00000000
broadcast00001010.10100011.11111111.11111111
green = network part, grey = host part
hex0x0aa30000
decimal178454528
reverse dns0.0.163.10.in-addr.arpa
ipv4-mapped::ffff:aa3:0

/16 split into /23 · 128 subnets

close ×
#networkhost rangebroadcast
110.163.0.0/2310.163.0.1 – 10.163.1.25410.163.1.255
210.163.2.0/2310.163.2.1 – 10.163.3.25410.163.3.255
310.163.4.0/2310.163.4.1 – 10.163.5.25410.163.5.255
410.163.6.0/2310.163.6.1 – 10.163.7.25410.163.7.255
510.163.8.0/2310.163.8.1 – 10.163.9.25410.163.9.255
610.163.10.0/2310.163.10.1 – 10.163.11.25410.163.11.255
710.163.12.0/2310.163.12.1 – 10.163.13.25410.163.13.255
810.163.14.0/2310.163.14.1 – 10.163.15.25410.163.15.255
910.163.16.0/2310.163.16.1 – 10.163.17.25410.163.17.255
1010.163.18.0/2310.163.18.1 – 10.163.19.25410.163.19.255
1110.163.20.0/2310.163.20.1 – 10.163.21.25410.163.21.255
1210.163.22.0/2310.163.22.1 – 10.163.23.25410.163.23.255
1310.163.24.0/2310.163.24.1 – 10.163.25.25410.163.25.255
1410.163.26.0/2310.163.26.1 – 10.163.27.25410.163.27.255
1510.163.28.0/2310.163.28.1 – 10.163.29.25410.163.29.255
1610.163.30.0/2310.163.30.1 – 10.163.31.25410.163.31.255
1710.163.32.0/2310.163.32.1 – 10.163.33.25410.163.33.255
1810.163.34.0/2310.163.34.1 – 10.163.35.25410.163.35.255
1910.163.36.0/2310.163.36.1 – 10.163.37.25410.163.37.255
2010.163.38.0/2310.163.38.1 – 10.163.39.25410.163.39.255
2110.163.40.0/2310.163.40.1 – 10.163.41.25410.163.41.255
2210.163.42.0/2310.163.42.1 – 10.163.43.25410.163.43.255
2310.163.44.0/2310.163.44.1 – 10.163.45.25410.163.45.255
2410.163.46.0/2310.163.46.1 – 10.163.47.25410.163.47.255
2510.163.48.0/2310.163.48.1 – 10.163.49.25410.163.49.255
2610.163.50.0/2310.163.50.1 – 10.163.51.25410.163.51.255
2710.163.52.0/2310.163.52.1 – 10.163.53.25410.163.53.255
2810.163.54.0/2310.163.54.1 – 10.163.55.25410.163.55.255
2910.163.56.0/2310.163.56.1 – 10.163.57.25410.163.57.255
3010.163.58.0/2310.163.58.1 – 10.163.59.25410.163.59.255
3110.163.60.0/2310.163.60.1 – 10.163.61.25410.163.61.255
3210.163.62.0/2310.163.62.1 – 10.163.63.25410.163.63.255
3310.163.64.0/2310.163.64.1 – 10.163.65.25410.163.65.255
3410.163.66.0/2310.163.66.1 – 10.163.67.25410.163.67.255
3510.163.68.0/2310.163.68.1 – 10.163.69.25410.163.69.255
3610.163.70.0/2310.163.70.1 – 10.163.71.25410.163.71.255
3710.163.72.0/2310.163.72.1 – 10.163.73.25410.163.73.255
3810.163.74.0/2310.163.74.1 – 10.163.75.25410.163.75.255
3910.163.76.0/2310.163.76.1 – 10.163.77.25410.163.77.255
4010.163.78.0/2310.163.78.1 – 10.163.79.25410.163.79.255
4110.163.80.0/2310.163.80.1 – 10.163.81.25410.163.81.255
4210.163.82.0/2310.163.82.1 – 10.163.83.25410.163.83.255
4310.163.84.0/2310.163.84.1 – 10.163.85.25410.163.85.255
4410.163.86.0/2310.163.86.1 – 10.163.87.25410.163.87.255
4510.163.88.0/2310.163.88.1 – 10.163.89.25410.163.89.255
4610.163.90.0/2310.163.90.1 – 10.163.91.25410.163.91.255
4710.163.92.0/2310.163.92.1 – 10.163.93.25410.163.93.255
4810.163.94.0/2310.163.94.1 – 10.163.95.25410.163.95.255
4910.163.96.0/2310.163.96.1 – 10.163.97.25410.163.97.255
5010.163.98.0/2310.163.98.1 – 10.163.99.25410.163.99.255
5110.163.100.0/2310.163.100.1 – 10.163.101.25410.163.101.255
5210.163.102.0/2310.163.102.1 – 10.163.103.25410.163.103.255
5310.163.104.0/2310.163.104.1 – 10.163.105.25410.163.105.255
5410.163.106.0/2310.163.106.1 – 10.163.107.25410.163.107.255
5510.163.108.0/2310.163.108.1 – 10.163.109.25410.163.109.255
5610.163.110.0/2310.163.110.1 – 10.163.111.25410.163.111.255
5710.163.112.0/2310.163.112.1 – 10.163.113.25410.163.113.255
5810.163.114.0/2310.163.114.1 – 10.163.115.25410.163.115.255
5910.163.116.0/2310.163.116.1 – 10.163.117.25410.163.117.255
6010.163.118.0/2310.163.118.1 – 10.163.119.25410.163.119.255
6110.163.120.0/2310.163.120.1 – 10.163.121.25410.163.121.255
6210.163.122.0/2310.163.122.1 – 10.163.123.25410.163.123.255
6310.163.124.0/2310.163.124.1 – 10.163.125.25410.163.125.255
6410.163.126.0/2310.163.126.1 – 10.163.127.25410.163.127.255
6510.163.128.0/2310.163.128.1 – 10.163.129.25410.163.129.255
6610.163.130.0/2310.163.130.1 – 10.163.131.25410.163.131.255
6710.163.132.0/2310.163.132.1 – 10.163.133.25410.163.133.255
6810.163.134.0/2310.163.134.1 – 10.163.135.25410.163.135.255
6910.163.136.0/2310.163.136.1 – 10.163.137.25410.163.137.255
7010.163.138.0/2310.163.138.1 – 10.163.139.25410.163.139.255
7110.163.140.0/2310.163.140.1 – 10.163.141.25410.163.141.255
7210.163.142.0/2310.163.142.1 – 10.163.143.25410.163.143.255
7310.163.144.0/2310.163.144.1 – 10.163.145.25410.163.145.255
7410.163.146.0/2310.163.146.1 – 10.163.147.25410.163.147.255
7510.163.148.0/2310.163.148.1 – 10.163.149.25410.163.149.255
7610.163.150.0/2310.163.150.1 – 10.163.151.25410.163.151.255
7710.163.152.0/2310.163.152.1 – 10.163.153.25410.163.153.255
7810.163.154.0/2310.163.154.1 – 10.163.155.25410.163.155.255
7910.163.156.0/2310.163.156.1 – 10.163.157.25410.163.157.255
8010.163.158.0/2310.163.158.1 – 10.163.159.25410.163.159.255
8110.163.160.0/2310.163.160.1 – 10.163.161.25410.163.161.255
8210.163.162.0/2310.163.162.1 – 10.163.163.25410.163.163.255
8310.163.164.0/2310.163.164.1 – 10.163.165.25410.163.165.255
8410.163.166.0/2310.163.166.1 – 10.163.167.25410.163.167.255
8510.163.168.0/2310.163.168.1 – 10.163.169.25410.163.169.255
8610.163.170.0/2310.163.170.1 – 10.163.171.25410.163.171.255
8710.163.172.0/2310.163.172.1 – 10.163.173.25410.163.173.255
8810.163.174.0/2310.163.174.1 – 10.163.175.25410.163.175.255
8910.163.176.0/2310.163.176.1 – 10.163.177.25410.163.177.255
9010.163.178.0/2310.163.178.1 – 10.163.179.25410.163.179.255
9110.163.180.0/2310.163.180.1 – 10.163.181.25410.163.181.255
9210.163.182.0/2310.163.182.1 – 10.163.183.25410.163.183.255
9310.163.184.0/2310.163.184.1 – 10.163.185.25410.163.185.255
9410.163.186.0/2310.163.186.1 – 10.163.187.25410.163.187.255
9510.163.188.0/2310.163.188.1 – 10.163.189.25410.163.189.255
9610.163.190.0/2310.163.190.1 – 10.163.191.25410.163.191.255
9710.163.192.0/2310.163.192.1 – 10.163.193.25410.163.193.255
9810.163.194.0/2310.163.194.1 – 10.163.195.25410.163.195.255
9910.163.196.0/2310.163.196.1 – 10.163.197.25410.163.197.255
10010.163.198.0/2310.163.198.1 – 10.163.199.25410.163.199.255
10110.163.200.0/2310.163.200.1 – 10.163.201.25410.163.201.255
10210.163.202.0/2310.163.202.1 – 10.163.203.25410.163.203.255
10310.163.204.0/2310.163.204.1 – 10.163.205.25410.163.205.255
10410.163.206.0/2310.163.206.1 – 10.163.207.25410.163.207.255
10510.163.208.0/2310.163.208.1 – 10.163.209.25410.163.209.255
10610.163.210.0/2310.163.210.1 – 10.163.211.25410.163.211.255
10710.163.212.0/2310.163.212.1 – 10.163.213.25410.163.213.255
10810.163.214.0/2310.163.214.1 – 10.163.215.25410.163.215.255
10910.163.216.0/2310.163.216.1 – 10.163.217.25410.163.217.255
11010.163.218.0/2310.163.218.1 – 10.163.219.25410.163.219.255
11110.163.220.0/2310.163.220.1 – 10.163.221.25410.163.221.255
11210.163.222.0/2310.163.222.1 – 10.163.223.25410.163.223.255
11310.163.224.0/2310.163.224.1 – 10.163.225.25410.163.225.255
11410.163.226.0/2310.163.226.1 – 10.163.227.25410.163.227.255
11510.163.228.0/2310.163.228.1 – 10.163.229.25410.163.229.255
11610.163.230.0/2310.163.230.1 – 10.163.231.25410.163.231.255
11710.163.232.0/2310.163.232.1 – 10.163.233.25410.163.233.255
11810.163.234.0/2310.163.234.1 – 10.163.235.25410.163.235.255
11910.163.236.0/2310.163.236.1 – 10.163.237.25410.163.237.255
12010.163.238.0/2310.163.238.1 – 10.163.239.25410.163.239.255
12110.163.240.0/2310.163.240.1 – 10.163.241.25410.163.241.255
12210.163.242.0/2310.163.242.1 – 10.163.243.25410.163.243.255
12310.163.244.0/2310.163.244.1 – 10.163.245.25410.163.245.255
12410.163.246.0/2310.163.246.1 – 10.163.247.25410.163.247.255
12510.163.248.0/2310.163.248.1 – 10.163.249.25410.163.249.255
12610.163.250.0/2310.163.250.1 – 10.163.251.25410.163.251.255
12710.163.252.0/2310.163.252.1 – 10.163.253.25410.163.253.255
12810.163.254.0/2310.163.254.1 – 10.163.255.25410.163.255.255
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 →