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)10.38.0.0/16
network10.38.0.0/16
broadcast10.38.255.255
first host10.38.0.1
last host10.38.255.254
subnet mask255.255.0.0
wildcard0.0.255.255
addresses65,536
usable hosts65,534
classA
ipcalc 10.38.0.0/16
address00001010.00100110.00000000.00000000
subnet mask11111111.11111111.00000000.00000000
network00001010.00100110.00000000.00000000
broadcast00001010.00100110.11111111.11111111
green = network part, grey = host part
hex0x0a260000
decimal170262528
reverse dns0.0.38.10.in-addr.arpa
ipv4-mapped::ffff:a26:0

/16 split into /23 · 128 subnets

close ×
#networkhost rangebroadcast
110.38.0.0/2310.38.0.1 – 10.38.1.25410.38.1.255
210.38.2.0/2310.38.2.1 – 10.38.3.25410.38.3.255
310.38.4.0/2310.38.4.1 – 10.38.5.25410.38.5.255
410.38.6.0/2310.38.6.1 – 10.38.7.25410.38.7.255
510.38.8.0/2310.38.8.1 – 10.38.9.25410.38.9.255
610.38.10.0/2310.38.10.1 – 10.38.11.25410.38.11.255
710.38.12.0/2310.38.12.1 – 10.38.13.25410.38.13.255
810.38.14.0/2310.38.14.1 – 10.38.15.25410.38.15.255
910.38.16.0/2310.38.16.1 – 10.38.17.25410.38.17.255
1010.38.18.0/2310.38.18.1 – 10.38.19.25410.38.19.255
1110.38.20.0/2310.38.20.1 – 10.38.21.25410.38.21.255
1210.38.22.0/2310.38.22.1 – 10.38.23.25410.38.23.255
1310.38.24.0/2310.38.24.1 – 10.38.25.25410.38.25.255
1410.38.26.0/2310.38.26.1 – 10.38.27.25410.38.27.255
1510.38.28.0/2310.38.28.1 – 10.38.29.25410.38.29.255
1610.38.30.0/2310.38.30.1 – 10.38.31.25410.38.31.255
1710.38.32.0/2310.38.32.1 – 10.38.33.25410.38.33.255
1810.38.34.0/2310.38.34.1 – 10.38.35.25410.38.35.255
1910.38.36.0/2310.38.36.1 – 10.38.37.25410.38.37.255
2010.38.38.0/2310.38.38.1 – 10.38.39.25410.38.39.255
2110.38.40.0/2310.38.40.1 – 10.38.41.25410.38.41.255
2210.38.42.0/2310.38.42.1 – 10.38.43.25410.38.43.255
2310.38.44.0/2310.38.44.1 – 10.38.45.25410.38.45.255
2410.38.46.0/2310.38.46.1 – 10.38.47.25410.38.47.255
2510.38.48.0/2310.38.48.1 – 10.38.49.25410.38.49.255
2610.38.50.0/2310.38.50.1 – 10.38.51.25410.38.51.255
2710.38.52.0/2310.38.52.1 – 10.38.53.25410.38.53.255
2810.38.54.0/2310.38.54.1 – 10.38.55.25410.38.55.255
2910.38.56.0/2310.38.56.1 – 10.38.57.25410.38.57.255
3010.38.58.0/2310.38.58.1 – 10.38.59.25410.38.59.255
3110.38.60.0/2310.38.60.1 – 10.38.61.25410.38.61.255
3210.38.62.0/2310.38.62.1 – 10.38.63.25410.38.63.255
3310.38.64.0/2310.38.64.1 – 10.38.65.25410.38.65.255
3410.38.66.0/2310.38.66.1 – 10.38.67.25410.38.67.255
3510.38.68.0/2310.38.68.1 – 10.38.69.25410.38.69.255
3610.38.70.0/2310.38.70.1 – 10.38.71.25410.38.71.255
3710.38.72.0/2310.38.72.1 – 10.38.73.25410.38.73.255
3810.38.74.0/2310.38.74.1 – 10.38.75.25410.38.75.255
3910.38.76.0/2310.38.76.1 – 10.38.77.25410.38.77.255
4010.38.78.0/2310.38.78.1 – 10.38.79.25410.38.79.255
4110.38.80.0/2310.38.80.1 – 10.38.81.25410.38.81.255
4210.38.82.0/2310.38.82.1 – 10.38.83.25410.38.83.255
4310.38.84.0/2310.38.84.1 – 10.38.85.25410.38.85.255
4410.38.86.0/2310.38.86.1 – 10.38.87.25410.38.87.255
4510.38.88.0/2310.38.88.1 – 10.38.89.25410.38.89.255
4610.38.90.0/2310.38.90.1 – 10.38.91.25410.38.91.255
4710.38.92.0/2310.38.92.1 – 10.38.93.25410.38.93.255
4810.38.94.0/2310.38.94.1 – 10.38.95.25410.38.95.255
4910.38.96.0/2310.38.96.1 – 10.38.97.25410.38.97.255
5010.38.98.0/2310.38.98.1 – 10.38.99.25410.38.99.255
5110.38.100.0/2310.38.100.1 – 10.38.101.25410.38.101.255
5210.38.102.0/2310.38.102.1 – 10.38.103.25410.38.103.255
5310.38.104.0/2310.38.104.1 – 10.38.105.25410.38.105.255
5410.38.106.0/2310.38.106.1 – 10.38.107.25410.38.107.255
5510.38.108.0/2310.38.108.1 – 10.38.109.25410.38.109.255
5610.38.110.0/2310.38.110.1 – 10.38.111.25410.38.111.255
5710.38.112.0/2310.38.112.1 – 10.38.113.25410.38.113.255
5810.38.114.0/2310.38.114.1 – 10.38.115.25410.38.115.255
5910.38.116.0/2310.38.116.1 – 10.38.117.25410.38.117.255
6010.38.118.0/2310.38.118.1 – 10.38.119.25410.38.119.255
6110.38.120.0/2310.38.120.1 – 10.38.121.25410.38.121.255
6210.38.122.0/2310.38.122.1 – 10.38.123.25410.38.123.255
6310.38.124.0/2310.38.124.1 – 10.38.125.25410.38.125.255
6410.38.126.0/2310.38.126.1 – 10.38.127.25410.38.127.255
6510.38.128.0/2310.38.128.1 – 10.38.129.25410.38.129.255
6610.38.130.0/2310.38.130.1 – 10.38.131.25410.38.131.255
6710.38.132.0/2310.38.132.1 – 10.38.133.25410.38.133.255
6810.38.134.0/2310.38.134.1 – 10.38.135.25410.38.135.255
6910.38.136.0/2310.38.136.1 – 10.38.137.25410.38.137.255
7010.38.138.0/2310.38.138.1 – 10.38.139.25410.38.139.255
7110.38.140.0/2310.38.140.1 – 10.38.141.25410.38.141.255
7210.38.142.0/2310.38.142.1 – 10.38.143.25410.38.143.255
7310.38.144.0/2310.38.144.1 – 10.38.145.25410.38.145.255
7410.38.146.0/2310.38.146.1 – 10.38.147.25410.38.147.255
7510.38.148.0/2310.38.148.1 – 10.38.149.25410.38.149.255
7610.38.150.0/2310.38.150.1 – 10.38.151.25410.38.151.255
7710.38.152.0/2310.38.152.1 – 10.38.153.25410.38.153.255
7810.38.154.0/2310.38.154.1 – 10.38.155.25410.38.155.255
7910.38.156.0/2310.38.156.1 – 10.38.157.25410.38.157.255
8010.38.158.0/2310.38.158.1 – 10.38.159.25410.38.159.255
8110.38.160.0/2310.38.160.1 – 10.38.161.25410.38.161.255
8210.38.162.0/2310.38.162.1 – 10.38.163.25410.38.163.255
8310.38.164.0/2310.38.164.1 – 10.38.165.25410.38.165.255
8410.38.166.0/2310.38.166.1 – 10.38.167.25410.38.167.255
8510.38.168.0/2310.38.168.1 – 10.38.169.25410.38.169.255
8610.38.170.0/2310.38.170.1 – 10.38.171.25410.38.171.255
8710.38.172.0/2310.38.172.1 – 10.38.173.25410.38.173.255
8810.38.174.0/2310.38.174.1 – 10.38.175.25410.38.175.255
8910.38.176.0/2310.38.176.1 – 10.38.177.25410.38.177.255
9010.38.178.0/2310.38.178.1 – 10.38.179.25410.38.179.255
9110.38.180.0/2310.38.180.1 – 10.38.181.25410.38.181.255
9210.38.182.0/2310.38.182.1 – 10.38.183.25410.38.183.255
9310.38.184.0/2310.38.184.1 – 10.38.185.25410.38.185.255
9410.38.186.0/2310.38.186.1 – 10.38.187.25410.38.187.255
9510.38.188.0/2310.38.188.1 – 10.38.189.25410.38.189.255
9610.38.190.0/2310.38.190.1 – 10.38.191.25410.38.191.255
9710.38.192.0/2310.38.192.1 – 10.38.193.25410.38.193.255
9810.38.194.0/2310.38.194.1 – 10.38.195.25410.38.195.255
9910.38.196.0/2310.38.196.1 – 10.38.197.25410.38.197.255
10010.38.198.0/2310.38.198.1 – 10.38.199.25410.38.199.255
10110.38.200.0/2310.38.200.1 – 10.38.201.25410.38.201.255
10210.38.202.0/2310.38.202.1 – 10.38.203.25410.38.203.255
10310.38.204.0/2310.38.204.1 – 10.38.205.25410.38.205.255
10410.38.206.0/2310.38.206.1 – 10.38.207.25410.38.207.255
10510.38.208.0/2310.38.208.1 – 10.38.209.25410.38.209.255
10610.38.210.0/2310.38.210.1 – 10.38.211.25410.38.211.255
10710.38.212.0/2310.38.212.1 – 10.38.213.25410.38.213.255
10810.38.214.0/2310.38.214.1 – 10.38.215.25410.38.215.255
10910.38.216.0/2310.38.216.1 – 10.38.217.25410.38.217.255
11010.38.218.0/2310.38.218.1 – 10.38.219.25410.38.219.255
11110.38.220.0/2310.38.220.1 – 10.38.221.25410.38.221.255
11210.38.222.0/2310.38.222.1 – 10.38.223.25410.38.223.255
11310.38.224.0/2310.38.224.1 – 10.38.225.25410.38.225.255
11410.38.226.0/2310.38.226.1 – 10.38.227.25410.38.227.255
11510.38.228.0/2310.38.228.1 – 10.38.229.25410.38.229.255
11610.38.230.0/2310.38.230.1 – 10.38.231.25410.38.231.255
11710.38.232.0/2310.38.232.1 – 10.38.233.25410.38.233.255
11810.38.234.0/2310.38.234.1 – 10.38.235.25410.38.235.255
11910.38.236.0/2310.38.236.1 – 10.38.237.25410.38.237.255
12010.38.238.0/2310.38.238.1 – 10.38.239.25410.38.239.255
12110.38.240.0/2310.38.240.1 – 10.38.241.25410.38.241.255
12210.38.242.0/2310.38.242.1 – 10.38.243.25410.38.243.255
12310.38.244.0/2310.38.244.1 – 10.38.245.25410.38.245.255
12410.38.246.0/2310.38.246.1 – 10.38.247.25410.38.247.255
12510.38.248.0/2310.38.248.1 – 10.38.249.25410.38.249.255
12610.38.250.0/2310.38.250.1 – 10.38.251.25410.38.251.255
12710.38.252.0/2310.38.252.1 – 10.38.253.25410.38.253.255
12810.38.254.0/2310.38.254.1 – 10.38.255.25410.38.255.255
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 →