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)10.75.0.0/16
network10.75.0.0/16
broadcast10.75.255.255
first host10.75.0.1
last host10.75.255.254
subnet mask255.255.0.0
wildcard0.0.255.255
addresses65,536
usable hosts65,534
classA
ipcalc 10.75.0.0/16
address00001010.01001011.00000000.00000000
subnet mask11111111.11111111.00000000.00000000
network00001010.01001011.00000000.00000000
broadcast00001010.01001011.11111111.11111111
green = network part, grey = host part
hex0x0a4b0000
decimal172687360
reverse dns0.0.75.10.in-addr.arpa
ipv4-mapped::ffff:a4b:0

/16 split into /23 · 128 subnets

close ×
#networkhost rangebroadcast
110.75.0.0/2310.75.0.1 – 10.75.1.25410.75.1.255
210.75.2.0/2310.75.2.1 – 10.75.3.25410.75.3.255
310.75.4.0/2310.75.4.1 – 10.75.5.25410.75.5.255
410.75.6.0/2310.75.6.1 – 10.75.7.25410.75.7.255
510.75.8.0/2310.75.8.1 – 10.75.9.25410.75.9.255
610.75.10.0/2310.75.10.1 – 10.75.11.25410.75.11.255
710.75.12.0/2310.75.12.1 – 10.75.13.25410.75.13.255
810.75.14.0/2310.75.14.1 – 10.75.15.25410.75.15.255
910.75.16.0/2310.75.16.1 – 10.75.17.25410.75.17.255
1010.75.18.0/2310.75.18.1 – 10.75.19.25410.75.19.255
1110.75.20.0/2310.75.20.1 – 10.75.21.25410.75.21.255
1210.75.22.0/2310.75.22.1 – 10.75.23.25410.75.23.255
1310.75.24.0/2310.75.24.1 – 10.75.25.25410.75.25.255
1410.75.26.0/2310.75.26.1 – 10.75.27.25410.75.27.255
1510.75.28.0/2310.75.28.1 – 10.75.29.25410.75.29.255
1610.75.30.0/2310.75.30.1 – 10.75.31.25410.75.31.255
1710.75.32.0/2310.75.32.1 – 10.75.33.25410.75.33.255
1810.75.34.0/2310.75.34.1 – 10.75.35.25410.75.35.255
1910.75.36.0/2310.75.36.1 – 10.75.37.25410.75.37.255
2010.75.38.0/2310.75.38.1 – 10.75.39.25410.75.39.255
2110.75.40.0/2310.75.40.1 – 10.75.41.25410.75.41.255
2210.75.42.0/2310.75.42.1 – 10.75.43.25410.75.43.255
2310.75.44.0/2310.75.44.1 – 10.75.45.25410.75.45.255
2410.75.46.0/2310.75.46.1 – 10.75.47.25410.75.47.255
2510.75.48.0/2310.75.48.1 – 10.75.49.25410.75.49.255
2610.75.50.0/2310.75.50.1 – 10.75.51.25410.75.51.255
2710.75.52.0/2310.75.52.1 – 10.75.53.25410.75.53.255
2810.75.54.0/2310.75.54.1 – 10.75.55.25410.75.55.255
2910.75.56.0/2310.75.56.1 – 10.75.57.25410.75.57.255
3010.75.58.0/2310.75.58.1 – 10.75.59.25410.75.59.255
3110.75.60.0/2310.75.60.1 – 10.75.61.25410.75.61.255
3210.75.62.0/2310.75.62.1 – 10.75.63.25410.75.63.255
3310.75.64.0/2310.75.64.1 – 10.75.65.25410.75.65.255
3410.75.66.0/2310.75.66.1 – 10.75.67.25410.75.67.255
3510.75.68.0/2310.75.68.1 – 10.75.69.25410.75.69.255
3610.75.70.0/2310.75.70.1 – 10.75.71.25410.75.71.255
3710.75.72.0/2310.75.72.1 – 10.75.73.25410.75.73.255
3810.75.74.0/2310.75.74.1 – 10.75.75.25410.75.75.255
3910.75.76.0/2310.75.76.1 – 10.75.77.25410.75.77.255
4010.75.78.0/2310.75.78.1 – 10.75.79.25410.75.79.255
4110.75.80.0/2310.75.80.1 – 10.75.81.25410.75.81.255
4210.75.82.0/2310.75.82.1 – 10.75.83.25410.75.83.255
4310.75.84.0/2310.75.84.1 – 10.75.85.25410.75.85.255
4410.75.86.0/2310.75.86.1 – 10.75.87.25410.75.87.255
4510.75.88.0/2310.75.88.1 – 10.75.89.25410.75.89.255
4610.75.90.0/2310.75.90.1 – 10.75.91.25410.75.91.255
4710.75.92.0/2310.75.92.1 – 10.75.93.25410.75.93.255
4810.75.94.0/2310.75.94.1 – 10.75.95.25410.75.95.255
4910.75.96.0/2310.75.96.1 – 10.75.97.25410.75.97.255
5010.75.98.0/2310.75.98.1 – 10.75.99.25410.75.99.255
5110.75.100.0/2310.75.100.1 – 10.75.101.25410.75.101.255
5210.75.102.0/2310.75.102.1 – 10.75.103.25410.75.103.255
5310.75.104.0/2310.75.104.1 – 10.75.105.25410.75.105.255
5410.75.106.0/2310.75.106.1 – 10.75.107.25410.75.107.255
5510.75.108.0/2310.75.108.1 – 10.75.109.25410.75.109.255
5610.75.110.0/2310.75.110.1 – 10.75.111.25410.75.111.255
5710.75.112.0/2310.75.112.1 – 10.75.113.25410.75.113.255
5810.75.114.0/2310.75.114.1 – 10.75.115.25410.75.115.255
5910.75.116.0/2310.75.116.1 – 10.75.117.25410.75.117.255
6010.75.118.0/2310.75.118.1 – 10.75.119.25410.75.119.255
6110.75.120.0/2310.75.120.1 – 10.75.121.25410.75.121.255
6210.75.122.0/2310.75.122.1 – 10.75.123.25410.75.123.255
6310.75.124.0/2310.75.124.1 – 10.75.125.25410.75.125.255
6410.75.126.0/2310.75.126.1 – 10.75.127.25410.75.127.255
6510.75.128.0/2310.75.128.1 – 10.75.129.25410.75.129.255
6610.75.130.0/2310.75.130.1 – 10.75.131.25410.75.131.255
6710.75.132.0/2310.75.132.1 – 10.75.133.25410.75.133.255
6810.75.134.0/2310.75.134.1 – 10.75.135.25410.75.135.255
6910.75.136.0/2310.75.136.1 – 10.75.137.25410.75.137.255
7010.75.138.0/2310.75.138.1 – 10.75.139.25410.75.139.255
7110.75.140.0/2310.75.140.1 – 10.75.141.25410.75.141.255
7210.75.142.0/2310.75.142.1 – 10.75.143.25410.75.143.255
7310.75.144.0/2310.75.144.1 – 10.75.145.25410.75.145.255
7410.75.146.0/2310.75.146.1 – 10.75.147.25410.75.147.255
7510.75.148.0/2310.75.148.1 – 10.75.149.25410.75.149.255
7610.75.150.0/2310.75.150.1 – 10.75.151.25410.75.151.255
7710.75.152.0/2310.75.152.1 – 10.75.153.25410.75.153.255
7810.75.154.0/2310.75.154.1 – 10.75.155.25410.75.155.255
7910.75.156.0/2310.75.156.1 – 10.75.157.25410.75.157.255
8010.75.158.0/2310.75.158.1 – 10.75.159.25410.75.159.255
8110.75.160.0/2310.75.160.1 – 10.75.161.25410.75.161.255
8210.75.162.0/2310.75.162.1 – 10.75.163.25410.75.163.255
8310.75.164.0/2310.75.164.1 – 10.75.165.25410.75.165.255
8410.75.166.0/2310.75.166.1 – 10.75.167.25410.75.167.255
8510.75.168.0/2310.75.168.1 – 10.75.169.25410.75.169.255
8610.75.170.0/2310.75.170.1 – 10.75.171.25410.75.171.255
8710.75.172.0/2310.75.172.1 – 10.75.173.25410.75.173.255
8810.75.174.0/2310.75.174.1 – 10.75.175.25410.75.175.255
8910.75.176.0/2310.75.176.1 – 10.75.177.25410.75.177.255
9010.75.178.0/2310.75.178.1 – 10.75.179.25410.75.179.255
9110.75.180.0/2310.75.180.1 – 10.75.181.25410.75.181.255
9210.75.182.0/2310.75.182.1 – 10.75.183.25410.75.183.255
9310.75.184.0/2310.75.184.1 – 10.75.185.25410.75.185.255
9410.75.186.0/2310.75.186.1 – 10.75.187.25410.75.187.255
9510.75.188.0/2310.75.188.1 – 10.75.189.25410.75.189.255
9610.75.190.0/2310.75.190.1 – 10.75.191.25410.75.191.255
9710.75.192.0/2310.75.192.1 – 10.75.193.25410.75.193.255
9810.75.194.0/2310.75.194.1 – 10.75.195.25410.75.195.255
9910.75.196.0/2310.75.196.1 – 10.75.197.25410.75.197.255
10010.75.198.0/2310.75.198.1 – 10.75.199.25410.75.199.255
10110.75.200.0/2310.75.200.1 – 10.75.201.25410.75.201.255
10210.75.202.0/2310.75.202.1 – 10.75.203.25410.75.203.255
10310.75.204.0/2310.75.204.1 – 10.75.205.25410.75.205.255
10410.75.206.0/2310.75.206.1 – 10.75.207.25410.75.207.255
10510.75.208.0/2310.75.208.1 – 10.75.209.25410.75.209.255
10610.75.210.0/2310.75.210.1 – 10.75.211.25410.75.211.255
10710.75.212.0/2310.75.212.1 – 10.75.213.25410.75.213.255
10810.75.214.0/2310.75.214.1 – 10.75.215.25410.75.215.255
10910.75.216.0/2310.75.216.1 – 10.75.217.25410.75.217.255
11010.75.218.0/2310.75.218.1 – 10.75.219.25410.75.219.255
11110.75.220.0/2310.75.220.1 – 10.75.221.25410.75.221.255
11210.75.222.0/2310.75.222.1 – 10.75.223.25410.75.223.255
11310.75.224.0/2310.75.224.1 – 10.75.225.25410.75.225.255
11410.75.226.0/2310.75.226.1 – 10.75.227.25410.75.227.255
11510.75.228.0/2310.75.228.1 – 10.75.229.25410.75.229.255
11610.75.230.0/2310.75.230.1 – 10.75.231.25410.75.231.255
11710.75.232.0/2310.75.232.1 – 10.75.233.25410.75.233.255
11810.75.234.0/2310.75.234.1 – 10.75.235.25410.75.235.255
11910.75.236.0/2310.75.236.1 – 10.75.237.25410.75.237.255
12010.75.238.0/2310.75.238.1 – 10.75.239.25410.75.239.255
12110.75.240.0/2310.75.240.1 – 10.75.241.25410.75.241.255
12210.75.242.0/2310.75.242.1 – 10.75.243.25410.75.243.255
12310.75.244.0/2310.75.244.1 – 10.75.245.25410.75.245.255
12410.75.246.0/2310.75.246.1 – 10.75.247.25410.75.247.255
12510.75.248.0/2310.75.248.1 – 10.75.249.25410.75.249.255
12610.75.250.0/2310.75.250.1 – 10.75.251.25410.75.251.255
12710.75.252.0/2310.75.252.1 – 10.75.253.25410.75.253.255
12810.75.254.0/2310.75.254.1 – 10.75.255.25410.75.255.255
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 →