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)10.70.0.0/16
network10.70.0.0/16
broadcast10.70.255.255
first host10.70.0.1
last host10.70.255.254
subnet mask255.255.0.0
wildcard0.0.255.255
addresses65,536
usable hosts65,534
classA
ipcalc 10.70.0.0/16
address00001010.01000110.00000000.00000000
subnet mask11111111.11111111.00000000.00000000
network00001010.01000110.00000000.00000000
broadcast00001010.01000110.11111111.11111111
green = network part, grey = host part
hex0x0a460000
decimal172359680
reverse dns0.0.70.10.in-addr.arpa
ipv4-mapped::ffff:a46:0

/16 split into /23 · 128 subnets

close ×
#networkhost rangebroadcast
110.70.0.0/2310.70.0.1 – 10.70.1.25410.70.1.255
210.70.2.0/2310.70.2.1 – 10.70.3.25410.70.3.255
310.70.4.0/2310.70.4.1 – 10.70.5.25410.70.5.255
410.70.6.0/2310.70.6.1 – 10.70.7.25410.70.7.255
510.70.8.0/2310.70.8.1 – 10.70.9.25410.70.9.255
610.70.10.0/2310.70.10.1 – 10.70.11.25410.70.11.255
710.70.12.0/2310.70.12.1 – 10.70.13.25410.70.13.255
810.70.14.0/2310.70.14.1 – 10.70.15.25410.70.15.255
910.70.16.0/2310.70.16.1 – 10.70.17.25410.70.17.255
1010.70.18.0/2310.70.18.1 – 10.70.19.25410.70.19.255
1110.70.20.0/2310.70.20.1 – 10.70.21.25410.70.21.255
1210.70.22.0/2310.70.22.1 – 10.70.23.25410.70.23.255
1310.70.24.0/2310.70.24.1 – 10.70.25.25410.70.25.255
1410.70.26.0/2310.70.26.1 – 10.70.27.25410.70.27.255
1510.70.28.0/2310.70.28.1 – 10.70.29.25410.70.29.255
1610.70.30.0/2310.70.30.1 – 10.70.31.25410.70.31.255
1710.70.32.0/2310.70.32.1 – 10.70.33.25410.70.33.255
1810.70.34.0/2310.70.34.1 – 10.70.35.25410.70.35.255
1910.70.36.0/2310.70.36.1 – 10.70.37.25410.70.37.255
2010.70.38.0/2310.70.38.1 – 10.70.39.25410.70.39.255
2110.70.40.0/2310.70.40.1 – 10.70.41.25410.70.41.255
2210.70.42.0/2310.70.42.1 – 10.70.43.25410.70.43.255
2310.70.44.0/2310.70.44.1 – 10.70.45.25410.70.45.255
2410.70.46.0/2310.70.46.1 – 10.70.47.25410.70.47.255
2510.70.48.0/2310.70.48.1 – 10.70.49.25410.70.49.255
2610.70.50.0/2310.70.50.1 – 10.70.51.25410.70.51.255
2710.70.52.0/2310.70.52.1 – 10.70.53.25410.70.53.255
2810.70.54.0/2310.70.54.1 – 10.70.55.25410.70.55.255
2910.70.56.0/2310.70.56.1 – 10.70.57.25410.70.57.255
3010.70.58.0/2310.70.58.1 – 10.70.59.25410.70.59.255
3110.70.60.0/2310.70.60.1 – 10.70.61.25410.70.61.255
3210.70.62.0/2310.70.62.1 – 10.70.63.25410.70.63.255
3310.70.64.0/2310.70.64.1 – 10.70.65.25410.70.65.255
3410.70.66.0/2310.70.66.1 – 10.70.67.25410.70.67.255
3510.70.68.0/2310.70.68.1 – 10.70.69.25410.70.69.255
3610.70.70.0/2310.70.70.1 – 10.70.71.25410.70.71.255
3710.70.72.0/2310.70.72.1 – 10.70.73.25410.70.73.255
3810.70.74.0/2310.70.74.1 – 10.70.75.25410.70.75.255
3910.70.76.0/2310.70.76.1 – 10.70.77.25410.70.77.255
4010.70.78.0/2310.70.78.1 – 10.70.79.25410.70.79.255
4110.70.80.0/2310.70.80.1 – 10.70.81.25410.70.81.255
4210.70.82.0/2310.70.82.1 – 10.70.83.25410.70.83.255
4310.70.84.0/2310.70.84.1 – 10.70.85.25410.70.85.255
4410.70.86.0/2310.70.86.1 – 10.70.87.25410.70.87.255
4510.70.88.0/2310.70.88.1 – 10.70.89.25410.70.89.255
4610.70.90.0/2310.70.90.1 – 10.70.91.25410.70.91.255
4710.70.92.0/2310.70.92.1 – 10.70.93.25410.70.93.255
4810.70.94.0/2310.70.94.1 – 10.70.95.25410.70.95.255
4910.70.96.0/2310.70.96.1 – 10.70.97.25410.70.97.255
5010.70.98.0/2310.70.98.1 – 10.70.99.25410.70.99.255
5110.70.100.0/2310.70.100.1 – 10.70.101.25410.70.101.255
5210.70.102.0/2310.70.102.1 – 10.70.103.25410.70.103.255
5310.70.104.0/2310.70.104.1 – 10.70.105.25410.70.105.255
5410.70.106.0/2310.70.106.1 – 10.70.107.25410.70.107.255
5510.70.108.0/2310.70.108.1 – 10.70.109.25410.70.109.255
5610.70.110.0/2310.70.110.1 – 10.70.111.25410.70.111.255
5710.70.112.0/2310.70.112.1 – 10.70.113.25410.70.113.255
5810.70.114.0/2310.70.114.1 – 10.70.115.25410.70.115.255
5910.70.116.0/2310.70.116.1 – 10.70.117.25410.70.117.255
6010.70.118.0/2310.70.118.1 – 10.70.119.25410.70.119.255
6110.70.120.0/2310.70.120.1 – 10.70.121.25410.70.121.255
6210.70.122.0/2310.70.122.1 – 10.70.123.25410.70.123.255
6310.70.124.0/2310.70.124.1 – 10.70.125.25410.70.125.255
6410.70.126.0/2310.70.126.1 – 10.70.127.25410.70.127.255
6510.70.128.0/2310.70.128.1 – 10.70.129.25410.70.129.255
6610.70.130.0/2310.70.130.1 – 10.70.131.25410.70.131.255
6710.70.132.0/2310.70.132.1 – 10.70.133.25410.70.133.255
6810.70.134.0/2310.70.134.1 – 10.70.135.25410.70.135.255
6910.70.136.0/2310.70.136.1 – 10.70.137.25410.70.137.255
7010.70.138.0/2310.70.138.1 – 10.70.139.25410.70.139.255
7110.70.140.0/2310.70.140.1 – 10.70.141.25410.70.141.255
7210.70.142.0/2310.70.142.1 – 10.70.143.25410.70.143.255
7310.70.144.0/2310.70.144.1 – 10.70.145.25410.70.145.255
7410.70.146.0/2310.70.146.1 – 10.70.147.25410.70.147.255
7510.70.148.0/2310.70.148.1 – 10.70.149.25410.70.149.255
7610.70.150.0/2310.70.150.1 – 10.70.151.25410.70.151.255
7710.70.152.0/2310.70.152.1 – 10.70.153.25410.70.153.255
7810.70.154.0/2310.70.154.1 – 10.70.155.25410.70.155.255
7910.70.156.0/2310.70.156.1 – 10.70.157.25410.70.157.255
8010.70.158.0/2310.70.158.1 – 10.70.159.25410.70.159.255
8110.70.160.0/2310.70.160.1 – 10.70.161.25410.70.161.255
8210.70.162.0/2310.70.162.1 – 10.70.163.25410.70.163.255
8310.70.164.0/2310.70.164.1 – 10.70.165.25410.70.165.255
8410.70.166.0/2310.70.166.1 – 10.70.167.25410.70.167.255
8510.70.168.0/2310.70.168.1 – 10.70.169.25410.70.169.255
8610.70.170.0/2310.70.170.1 – 10.70.171.25410.70.171.255
8710.70.172.0/2310.70.172.1 – 10.70.173.25410.70.173.255
8810.70.174.0/2310.70.174.1 – 10.70.175.25410.70.175.255
8910.70.176.0/2310.70.176.1 – 10.70.177.25410.70.177.255
9010.70.178.0/2310.70.178.1 – 10.70.179.25410.70.179.255
9110.70.180.0/2310.70.180.1 – 10.70.181.25410.70.181.255
9210.70.182.0/2310.70.182.1 – 10.70.183.25410.70.183.255
9310.70.184.0/2310.70.184.1 – 10.70.185.25410.70.185.255
9410.70.186.0/2310.70.186.1 – 10.70.187.25410.70.187.255
9510.70.188.0/2310.70.188.1 – 10.70.189.25410.70.189.255
9610.70.190.0/2310.70.190.1 – 10.70.191.25410.70.191.255
9710.70.192.0/2310.70.192.1 – 10.70.193.25410.70.193.255
9810.70.194.0/2310.70.194.1 – 10.70.195.25410.70.195.255
9910.70.196.0/2310.70.196.1 – 10.70.197.25410.70.197.255
10010.70.198.0/2310.70.198.1 – 10.70.199.25410.70.199.255
10110.70.200.0/2310.70.200.1 – 10.70.201.25410.70.201.255
10210.70.202.0/2310.70.202.1 – 10.70.203.25410.70.203.255
10310.70.204.0/2310.70.204.1 – 10.70.205.25410.70.205.255
10410.70.206.0/2310.70.206.1 – 10.70.207.25410.70.207.255
10510.70.208.0/2310.70.208.1 – 10.70.209.25410.70.209.255
10610.70.210.0/2310.70.210.1 – 10.70.211.25410.70.211.255
10710.70.212.0/2310.70.212.1 – 10.70.213.25410.70.213.255
10810.70.214.0/2310.70.214.1 – 10.70.215.25410.70.215.255
10910.70.216.0/2310.70.216.1 – 10.70.217.25410.70.217.255
11010.70.218.0/2310.70.218.1 – 10.70.219.25410.70.219.255
11110.70.220.0/2310.70.220.1 – 10.70.221.25410.70.221.255
11210.70.222.0/2310.70.222.1 – 10.70.223.25410.70.223.255
11310.70.224.0/2310.70.224.1 – 10.70.225.25410.70.225.255
11410.70.226.0/2310.70.226.1 – 10.70.227.25410.70.227.255
11510.70.228.0/2310.70.228.1 – 10.70.229.25410.70.229.255
11610.70.230.0/2310.70.230.1 – 10.70.231.25410.70.231.255
11710.70.232.0/2310.70.232.1 – 10.70.233.25410.70.233.255
11810.70.234.0/2310.70.234.1 – 10.70.235.25410.70.235.255
11910.70.236.0/2310.70.236.1 – 10.70.237.25410.70.237.255
12010.70.238.0/2310.70.238.1 – 10.70.239.25410.70.239.255
12110.70.240.0/2310.70.240.1 – 10.70.241.25410.70.241.255
12210.70.242.0/2310.70.242.1 – 10.70.243.25410.70.243.255
12310.70.244.0/2310.70.244.1 – 10.70.245.25410.70.245.255
12410.70.246.0/2310.70.246.1 – 10.70.247.25410.70.247.255
12510.70.248.0/2310.70.248.1 – 10.70.249.25410.70.249.255
12610.70.250.0/2310.70.250.1 – 10.70.251.25410.70.251.255
12710.70.252.0/2310.70.252.1 – 10.70.253.25410.70.253.255
12810.70.254.0/2310.70.254.1 – 10.70.255.25410.70.255.255
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 →