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)10.144.0.0/16
network10.144.0.0/16
broadcast10.144.255.255
first host10.144.0.1
last host10.144.255.254
subnet mask255.255.0.0
wildcard0.0.255.255
addresses65,536
usable hosts65,534
classA
ipcalc 10.144.0.0/16
address00001010.10010000.00000000.00000000
subnet mask11111111.11111111.00000000.00000000
network00001010.10010000.00000000.00000000
broadcast00001010.10010000.11111111.11111111
green = network part, grey = host part
hex0x0a900000
decimal177209344
reverse dns0.0.144.10.in-addr.arpa
ipv4-mapped::ffff:a90:0

/16 split into /23 · 128 subnets

close ×
#networkhost rangebroadcast
110.144.0.0/2310.144.0.1 – 10.144.1.25410.144.1.255
210.144.2.0/2310.144.2.1 – 10.144.3.25410.144.3.255
310.144.4.0/2310.144.4.1 – 10.144.5.25410.144.5.255
410.144.6.0/2310.144.6.1 – 10.144.7.25410.144.7.255
510.144.8.0/2310.144.8.1 – 10.144.9.25410.144.9.255
610.144.10.0/2310.144.10.1 – 10.144.11.25410.144.11.255
710.144.12.0/2310.144.12.1 – 10.144.13.25410.144.13.255
810.144.14.0/2310.144.14.1 – 10.144.15.25410.144.15.255
910.144.16.0/2310.144.16.1 – 10.144.17.25410.144.17.255
1010.144.18.0/2310.144.18.1 – 10.144.19.25410.144.19.255
1110.144.20.0/2310.144.20.1 – 10.144.21.25410.144.21.255
1210.144.22.0/2310.144.22.1 – 10.144.23.25410.144.23.255
1310.144.24.0/2310.144.24.1 – 10.144.25.25410.144.25.255
1410.144.26.0/2310.144.26.1 – 10.144.27.25410.144.27.255
1510.144.28.0/2310.144.28.1 – 10.144.29.25410.144.29.255
1610.144.30.0/2310.144.30.1 – 10.144.31.25410.144.31.255
1710.144.32.0/2310.144.32.1 – 10.144.33.25410.144.33.255
1810.144.34.0/2310.144.34.1 – 10.144.35.25410.144.35.255
1910.144.36.0/2310.144.36.1 – 10.144.37.25410.144.37.255
2010.144.38.0/2310.144.38.1 – 10.144.39.25410.144.39.255
2110.144.40.0/2310.144.40.1 – 10.144.41.25410.144.41.255
2210.144.42.0/2310.144.42.1 – 10.144.43.25410.144.43.255
2310.144.44.0/2310.144.44.1 – 10.144.45.25410.144.45.255
2410.144.46.0/2310.144.46.1 – 10.144.47.25410.144.47.255
2510.144.48.0/2310.144.48.1 – 10.144.49.25410.144.49.255
2610.144.50.0/2310.144.50.1 – 10.144.51.25410.144.51.255
2710.144.52.0/2310.144.52.1 – 10.144.53.25410.144.53.255
2810.144.54.0/2310.144.54.1 – 10.144.55.25410.144.55.255
2910.144.56.0/2310.144.56.1 – 10.144.57.25410.144.57.255
3010.144.58.0/2310.144.58.1 – 10.144.59.25410.144.59.255
3110.144.60.0/2310.144.60.1 – 10.144.61.25410.144.61.255
3210.144.62.0/2310.144.62.1 – 10.144.63.25410.144.63.255
3310.144.64.0/2310.144.64.1 – 10.144.65.25410.144.65.255
3410.144.66.0/2310.144.66.1 – 10.144.67.25410.144.67.255
3510.144.68.0/2310.144.68.1 – 10.144.69.25410.144.69.255
3610.144.70.0/2310.144.70.1 – 10.144.71.25410.144.71.255
3710.144.72.0/2310.144.72.1 – 10.144.73.25410.144.73.255
3810.144.74.0/2310.144.74.1 – 10.144.75.25410.144.75.255
3910.144.76.0/2310.144.76.1 – 10.144.77.25410.144.77.255
4010.144.78.0/2310.144.78.1 – 10.144.79.25410.144.79.255
4110.144.80.0/2310.144.80.1 – 10.144.81.25410.144.81.255
4210.144.82.0/2310.144.82.1 – 10.144.83.25410.144.83.255
4310.144.84.0/2310.144.84.1 – 10.144.85.25410.144.85.255
4410.144.86.0/2310.144.86.1 – 10.144.87.25410.144.87.255
4510.144.88.0/2310.144.88.1 – 10.144.89.25410.144.89.255
4610.144.90.0/2310.144.90.1 – 10.144.91.25410.144.91.255
4710.144.92.0/2310.144.92.1 – 10.144.93.25410.144.93.255
4810.144.94.0/2310.144.94.1 – 10.144.95.25410.144.95.255
4910.144.96.0/2310.144.96.1 – 10.144.97.25410.144.97.255
5010.144.98.0/2310.144.98.1 – 10.144.99.25410.144.99.255
5110.144.100.0/2310.144.100.1 – 10.144.101.25410.144.101.255
5210.144.102.0/2310.144.102.1 – 10.144.103.25410.144.103.255
5310.144.104.0/2310.144.104.1 – 10.144.105.25410.144.105.255
5410.144.106.0/2310.144.106.1 – 10.144.107.25410.144.107.255
5510.144.108.0/2310.144.108.1 – 10.144.109.25410.144.109.255
5610.144.110.0/2310.144.110.1 – 10.144.111.25410.144.111.255
5710.144.112.0/2310.144.112.1 – 10.144.113.25410.144.113.255
5810.144.114.0/2310.144.114.1 – 10.144.115.25410.144.115.255
5910.144.116.0/2310.144.116.1 – 10.144.117.25410.144.117.255
6010.144.118.0/2310.144.118.1 – 10.144.119.25410.144.119.255
6110.144.120.0/2310.144.120.1 – 10.144.121.25410.144.121.255
6210.144.122.0/2310.144.122.1 – 10.144.123.25410.144.123.255
6310.144.124.0/2310.144.124.1 – 10.144.125.25410.144.125.255
6410.144.126.0/2310.144.126.1 – 10.144.127.25410.144.127.255
6510.144.128.0/2310.144.128.1 – 10.144.129.25410.144.129.255
6610.144.130.0/2310.144.130.1 – 10.144.131.25410.144.131.255
6710.144.132.0/2310.144.132.1 – 10.144.133.25410.144.133.255
6810.144.134.0/2310.144.134.1 – 10.144.135.25410.144.135.255
6910.144.136.0/2310.144.136.1 – 10.144.137.25410.144.137.255
7010.144.138.0/2310.144.138.1 – 10.144.139.25410.144.139.255
7110.144.140.0/2310.144.140.1 – 10.144.141.25410.144.141.255
7210.144.142.0/2310.144.142.1 – 10.144.143.25410.144.143.255
7310.144.144.0/2310.144.144.1 – 10.144.145.25410.144.145.255
7410.144.146.0/2310.144.146.1 – 10.144.147.25410.144.147.255
7510.144.148.0/2310.144.148.1 – 10.144.149.25410.144.149.255
7610.144.150.0/2310.144.150.1 – 10.144.151.25410.144.151.255
7710.144.152.0/2310.144.152.1 – 10.144.153.25410.144.153.255
7810.144.154.0/2310.144.154.1 – 10.144.155.25410.144.155.255
7910.144.156.0/2310.144.156.1 – 10.144.157.25410.144.157.255
8010.144.158.0/2310.144.158.1 – 10.144.159.25410.144.159.255
8110.144.160.0/2310.144.160.1 – 10.144.161.25410.144.161.255
8210.144.162.0/2310.144.162.1 – 10.144.163.25410.144.163.255
8310.144.164.0/2310.144.164.1 – 10.144.165.25410.144.165.255
8410.144.166.0/2310.144.166.1 – 10.144.167.25410.144.167.255
8510.144.168.0/2310.144.168.1 – 10.144.169.25410.144.169.255
8610.144.170.0/2310.144.170.1 – 10.144.171.25410.144.171.255
8710.144.172.0/2310.144.172.1 – 10.144.173.25410.144.173.255
8810.144.174.0/2310.144.174.1 – 10.144.175.25410.144.175.255
8910.144.176.0/2310.144.176.1 – 10.144.177.25410.144.177.255
9010.144.178.0/2310.144.178.1 – 10.144.179.25410.144.179.255
9110.144.180.0/2310.144.180.1 – 10.144.181.25410.144.181.255
9210.144.182.0/2310.144.182.1 – 10.144.183.25410.144.183.255
9310.144.184.0/2310.144.184.1 – 10.144.185.25410.144.185.255
9410.144.186.0/2310.144.186.1 – 10.144.187.25410.144.187.255
9510.144.188.0/2310.144.188.1 – 10.144.189.25410.144.189.255
9610.144.190.0/2310.144.190.1 – 10.144.191.25410.144.191.255
9710.144.192.0/2310.144.192.1 – 10.144.193.25410.144.193.255
9810.144.194.0/2310.144.194.1 – 10.144.195.25410.144.195.255
9910.144.196.0/2310.144.196.1 – 10.144.197.25410.144.197.255
10010.144.198.0/2310.144.198.1 – 10.144.199.25410.144.199.255
10110.144.200.0/2310.144.200.1 – 10.144.201.25410.144.201.255
10210.144.202.0/2310.144.202.1 – 10.144.203.25410.144.203.255
10310.144.204.0/2310.144.204.1 – 10.144.205.25410.144.205.255
10410.144.206.0/2310.144.206.1 – 10.144.207.25410.144.207.255
10510.144.208.0/2310.144.208.1 – 10.144.209.25410.144.209.255
10610.144.210.0/2310.144.210.1 – 10.144.211.25410.144.211.255
10710.144.212.0/2310.144.212.1 – 10.144.213.25410.144.213.255
10810.144.214.0/2310.144.214.1 – 10.144.215.25410.144.215.255
10910.144.216.0/2310.144.216.1 – 10.144.217.25410.144.217.255
11010.144.218.0/2310.144.218.1 – 10.144.219.25410.144.219.255
11110.144.220.0/2310.144.220.1 – 10.144.221.25410.144.221.255
11210.144.222.0/2310.144.222.1 – 10.144.223.25410.144.223.255
11310.144.224.0/2310.144.224.1 – 10.144.225.25410.144.225.255
11410.144.226.0/2310.144.226.1 – 10.144.227.25410.144.227.255
11510.144.228.0/2310.144.228.1 – 10.144.229.25410.144.229.255
11610.144.230.0/2310.144.230.1 – 10.144.231.25410.144.231.255
11710.144.232.0/2310.144.232.1 – 10.144.233.25410.144.233.255
11810.144.234.0/2310.144.234.1 – 10.144.235.25410.144.235.255
11910.144.236.0/2310.144.236.1 – 10.144.237.25410.144.237.255
12010.144.238.0/2310.144.238.1 – 10.144.239.25410.144.239.255
12110.144.240.0/2310.144.240.1 – 10.144.241.25410.144.241.255
12210.144.242.0/2310.144.242.1 – 10.144.243.25410.144.243.255
12310.144.244.0/2310.144.244.1 – 10.144.245.25410.144.245.255
12410.144.246.0/2310.144.246.1 – 10.144.247.25410.144.247.255
12510.144.248.0/2310.144.248.1 – 10.144.249.25410.144.249.255
12610.144.250.0/2310.144.250.1 – 10.144.251.25410.144.251.255
12710.144.252.0/2310.144.252.1 – 10.144.253.25410.144.253.255
12810.144.254.0/2310.144.254.1 – 10.144.255.25410.144.255.255
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 →