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)10.9.0.0/16
network10.9.0.0/16
broadcast10.9.255.255
first host10.9.0.1
last host10.9.255.254
subnet mask255.255.0.0
wildcard0.0.255.255
addresses65,536
usable hosts65,534
classA
ipcalc 10.9.0.0/16
address00001010.00001001.00000000.00000000
subnet mask11111111.11111111.00000000.00000000
network00001010.00001001.00000000.00000000
broadcast00001010.00001001.11111111.11111111
green = network part, grey = host part
hex0x0a090000
decimal168361984
reverse dns0.0.9.10.in-addr.arpa
ipv4-mapped::ffff:a09:0

/16 split into /23 · 128 subnets

close ×
#networkhost rangebroadcast
110.9.0.0/2310.9.0.1 – 10.9.1.25410.9.1.255
210.9.2.0/2310.9.2.1 – 10.9.3.25410.9.3.255
310.9.4.0/2310.9.4.1 – 10.9.5.25410.9.5.255
410.9.6.0/2310.9.6.1 – 10.9.7.25410.9.7.255
510.9.8.0/2310.9.8.1 – 10.9.9.25410.9.9.255
610.9.10.0/2310.9.10.1 – 10.9.11.25410.9.11.255
710.9.12.0/2310.9.12.1 – 10.9.13.25410.9.13.255
810.9.14.0/2310.9.14.1 – 10.9.15.25410.9.15.255
910.9.16.0/2310.9.16.1 – 10.9.17.25410.9.17.255
1010.9.18.0/2310.9.18.1 – 10.9.19.25410.9.19.255
1110.9.20.0/2310.9.20.1 – 10.9.21.25410.9.21.255
1210.9.22.0/2310.9.22.1 – 10.9.23.25410.9.23.255
1310.9.24.0/2310.9.24.1 – 10.9.25.25410.9.25.255
1410.9.26.0/2310.9.26.1 – 10.9.27.25410.9.27.255
1510.9.28.0/2310.9.28.1 – 10.9.29.25410.9.29.255
1610.9.30.0/2310.9.30.1 – 10.9.31.25410.9.31.255
1710.9.32.0/2310.9.32.1 – 10.9.33.25410.9.33.255
1810.9.34.0/2310.9.34.1 – 10.9.35.25410.9.35.255
1910.9.36.0/2310.9.36.1 – 10.9.37.25410.9.37.255
2010.9.38.0/2310.9.38.1 – 10.9.39.25410.9.39.255
2110.9.40.0/2310.9.40.1 – 10.9.41.25410.9.41.255
2210.9.42.0/2310.9.42.1 – 10.9.43.25410.9.43.255
2310.9.44.0/2310.9.44.1 – 10.9.45.25410.9.45.255
2410.9.46.0/2310.9.46.1 – 10.9.47.25410.9.47.255
2510.9.48.0/2310.9.48.1 – 10.9.49.25410.9.49.255
2610.9.50.0/2310.9.50.1 – 10.9.51.25410.9.51.255
2710.9.52.0/2310.9.52.1 – 10.9.53.25410.9.53.255
2810.9.54.0/2310.9.54.1 – 10.9.55.25410.9.55.255
2910.9.56.0/2310.9.56.1 – 10.9.57.25410.9.57.255
3010.9.58.0/2310.9.58.1 – 10.9.59.25410.9.59.255
3110.9.60.0/2310.9.60.1 – 10.9.61.25410.9.61.255
3210.9.62.0/2310.9.62.1 – 10.9.63.25410.9.63.255
3310.9.64.0/2310.9.64.1 – 10.9.65.25410.9.65.255
3410.9.66.0/2310.9.66.1 – 10.9.67.25410.9.67.255
3510.9.68.0/2310.9.68.1 – 10.9.69.25410.9.69.255
3610.9.70.0/2310.9.70.1 – 10.9.71.25410.9.71.255
3710.9.72.0/2310.9.72.1 – 10.9.73.25410.9.73.255
3810.9.74.0/2310.9.74.1 – 10.9.75.25410.9.75.255
3910.9.76.0/2310.9.76.1 – 10.9.77.25410.9.77.255
4010.9.78.0/2310.9.78.1 – 10.9.79.25410.9.79.255
4110.9.80.0/2310.9.80.1 – 10.9.81.25410.9.81.255
4210.9.82.0/2310.9.82.1 – 10.9.83.25410.9.83.255
4310.9.84.0/2310.9.84.1 – 10.9.85.25410.9.85.255
4410.9.86.0/2310.9.86.1 – 10.9.87.25410.9.87.255
4510.9.88.0/2310.9.88.1 – 10.9.89.25410.9.89.255
4610.9.90.0/2310.9.90.1 – 10.9.91.25410.9.91.255
4710.9.92.0/2310.9.92.1 – 10.9.93.25410.9.93.255
4810.9.94.0/2310.9.94.1 – 10.9.95.25410.9.95.255
4910.9.96.0/2310.9.96.1 – 10.9.97.25410.9.97.255
5010.9.98.0/2310.9.98.1 – 10.9.99.25410.9.99.255
5110.9.100.0/2310.9.100.1 – 10.9.101.25410.9.101.255
5210.9.102.0/2310.9.102.1 – 10.9.103.25410.9.103.255
5310.9.104.0/2310.9.104.1 – 10.9.105.25410.9.105.255
5410.9.106.0/2310.9.106.1 – 10.9.107.25410.9.107.255
5510.9.108.0/2310.9.108.1 – 10.9.109.25410.9.109.255
5610.9.110.0/2310.9.110.1 – 10.9.111.25410.9.111.255
5710.9.112.0/2310.9.112.1 – 10.9.113.25410.9.113.255
5810.9.114.0/2310.9.114.1 – 10.9.115.25410.9.115.255
5910.9.116.0/2310.9.116.1 – 10.9.117.25410.9.117.255
6010.9.118.0/2310.9.118.1 – 10.9.119.25410.9.119.255
6110.9.120.0/2310.9.120.1 – 10.9.121.25410.9.121.255
6210.9.122.0/2310.9.122.1 – 10.9.123.25410.9.123.255
6310.9.124.0/2310.9.124.1 – 10.9.125.25410.9.125.255
6410.9.126.0/2310.9.126.1 – 10.9.127.25410.9.127.255
6510.9.128.0/2310.9.128.1 – 10.9.129.25410.9.129.255
6610.9.130.0/2310.9.130.1 – 10.9.131.25410.9.131.255
6710.9.132.0/2310.9.132.1 – 10.9.133.25410.9.133.255
6810.9.134.0/2310.9.134.1 – 10.9.135.25410.9.135.255
6910.9.136.0/2310.9.136.1 – 10.9.137.25410.9.137.255
7010.9.138.0/2310.9.138.1 – 10.9.139.25410.9.139.255
7110.9.140.0/2310.9.140.1 – 10.9.141.25410.9.141.255
7210.9.142.0/2310.9.142.1 – 10.9.143.25410.9.143.255
7310.9.144.0/2310.9.144.1 – 10.9.145.25410.9.145.255
7410.9.146.0/2310.9.146.1 – 10.9.147.25410.9.147.255
7510.9.148.0/2310.9.148.1 – 10.9.149.25410.9.149.255
7610.9.150.0/2310.9.150.1 – 10.9.151.25410.9.151.255
7710.9.152.0/2310.9.152.1 – 10.9.153.25410.9.153.255
7810.9.154.0/2310.9.154.1 – 10.9.155.25410.9.155.255
7910.9.156.0/2310.9.156.1 – 10.9.157.25410.9.157.255
8010.9.158.0/2310.9.158.1 – 10.9.159.25410.9.159.255
8110.9.160.0/2310.9.160.1 – 10.9.161.25410.9.161.255
8210.9.162.0/2310.9.162.1 – 10.9.163.25410.9.163.255
8310.9.164.0/2310.9.164.1 – 10.9.165.25410.9.165.255
8410.9.166.0/2310.9.166.1 – 10.9.167.25410.9.167.255
8510.9.168.0/2310.9.168.1 – 10.9.169.25410.9.169.255
8610.9.170.0/2310.9.170.1 – 10.9.171.25410.9.171.255
8710.9.172.0/2310.9.172.1 – 10.9.173.25410.9.173.255
8810.9.174.0/2310.9.174.1 – 10.9.175.25410.9.175.255
8910.9.176.0/2310.9.176.1 – 10.9.177.25410.9.177.255
9010.9.178.0/2310.9.178.1 – 10.9.179.25410.9.179.255
9110.9.180.0/2310.9.180.1 – 10.9.181.25410.9.181.255
9210.9.182.0/2310.9.182.1 – 10.9.183.25410.9.183.255
9310.9.184.0/2310.9.184.1 – 10.9.185.25410.9.185.255
9410.9.186.0/2310.9.186.1 – 10.9.187.25410.9.187.255
9510.9.188.0/2310.9.188.1 – 10.9.189.25410.9.189.255
9610.9.190.0/2310.9.190.1 – 10.9.191.25410.9.191.255
9710.9.192.0/2310.9.192.1 – 10.9.193.25410.9.193.255
9810.9.194.0/2310.9.194.1 – 10.9.195.25410.9.195.255
9910.9.196.0/2310.9.196.1 – 10.9.197.25410.9.197.255
10010.9.198.0/2310.9.198.1 – 10.9.199.25410.9.199.255
10110.9.200.0/2310.9.200.1 – 10.9.201.25410.9.201.255
10210.9.202.0/2310.9.202.1 – 10.9.203.25410.9.203.255
10310.9.204.0/2310.9.204.1 – 10.9.205.25410.9.205.255
10410.9.206.0/2310.9.206.1 – 10.9.207.25410.9.207.255
10510.9.208.0/2310.9.208.1 – 10.9.209.25410.9.209.255
10610.9.210.0/2310.9.210.1 – 10.9.211.25410.9.211.255
10710.9.212.0/2310.9.212.1 – 10.9.213.25410.9.213.255
10810.9.214.0/2310.9.214.1 – 10.9.215.25410.9.215.255
10910.9.216.0/2310.9.216.1 – 10.9.217.25410.9.217.255
11010.9.218.0/2310.9.218.1 – 10.9.219.25410.9.219.255
11110.9.220.0/2310.9.220.1 – 10.9.221.25410.9.221.255
11210.9.222.0/2310.9.222.1 – 10.9.223.25410.9.223.255
11310.9.224.0/2310.9.224.1 – 10.9.225.25410.9.225.255
11410.9.226.0/2310.9.226.1 – 10.9.227.25410.9.227.255
11510.9.228.0/2310.9.228.1 – 10.9.229.25410.9.229.255
11610.9.230.0/2310.9.230.1 – 10.9.231.25410.9.231.255
11710.9.232.0/2310.9.232.1 – 10.9.233.25410.9.233.255
11810.9.234.0/2310.9.234.1 – 10.9.235.25410.9.235.255
11910.9.236.0/2310.9.236.1 – 10.9.237.25410.9.237.255
12010.9.238.0/2310.9.238.1 – 10.9.239.25410.9.239.255
12110.9.240.0/2310.9.240.1 – 10.9.241.25410.9.241.255
12210.9.242.0/2310.9.242.1 – 10.9.243.25410.9.243.255
12310.9.244.0/2310.9.244.1 – 10.9.245.25410.9.245.255
12410.9.246.0/2310.9.246.1 – 10.9.247.25410.9.247.255
12510.9.248.0/2310.9.248.1 – 10.9.249.25410.9.249.255
12610.9.250.0/2310.9.250.1 – 10.9.251.25410.9.251.255
12710.9.252.0/2310.9.252.1 – 10.9.253.25410.9.253.255
12810.9.254.0/2310.9.254.1 – 10.9.255.25410.9.255.255
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 →