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)10.47.0.0/16
network10.47.0.0/16
broadcast10.47.255.255
first host10.47.0.1
last host10.47.255.254
subnet mask255.255.0.0
wildcard0.0.255.255
addresses65,536
usable hosts65,534
classA
ipcalc 10.47.0.0/16
address00001010.00101111.00000000.00000000
subnet mask11111111.11111111.00000000.00000000
network00001010.00101111.00000000.00000000
broadcast00001010.00101111.11111111.11111111
green = network part, grey = host part
hex0x0a2f0000
decimal170852352
reverse dns0.0.47.10.in-addr.arpa
ipv4-mapped::ffff:a2f:0

/16 split into /23 · 128 subnets

close ×
#networkhost rangebroadcast
110.47.0.0/2310.47.0.1 – 10.47.1.25410.47.1.255
210.47.2.0/2310.47.2.1 – 10.47.3.25410.47.3.255
310.47.4.0/2310.47.4.1 – 10.47.5.25410.47.5.255
410.47.6.0/2310.47.6.1 – 10.47.7.25410.47.7.255
510.47.8.0/2310.47.8.1 – 10.47.9.25410.47.9.255
610.47.10.0/2310.47.10.1 – 10.47.11.25410.47.11.255
710.47.12.0/2310.47.12.1 – 10.47.13.25410.47.13.255
810.47.14.0/2310.47.14.1 – 10.47.15.25410.47.15.255
910.47.16.0/2310.47.16.1 – 10.47.17.25410.47.17.255
1010.47.18.0/2310.47.18.1 – 10.47.19.25410.47.19.255
1110.47.20.0/2310.47.20.1 – 10.47.21.25410.47.21.255
1210.47.22.0/2310.47.22.1 – 10.47.23.25410.47.23.255
1310.47.24.0/2310.47.24.1 – 10.47.25.25410.47.25.255
1410.47.26.0/2310.47.26.1 – 10.47.27.25410.47.27.255
1510.47.28.0/2310.47.28.1 – 10.47.29.25410.47.29.255
1610.47.30.0/2310.47.30.1 – 10.47.31.25410.47.31.255
1710.47.32.0/2310.47.32.1 – 10.47.33.25410.47.33.255
1810.47.34.0/2310.47.34.1 – 10.47.35.25410.47.35.255
1910.47.36.0/2310.47.36.1 – 10.47.37.25410.47.37.255
2010.47.38.0/2310.47.38.1 – 10.47.39.25410.47.39.255
2110.47.40.0/2310.47.40.1 – 10.47.41.25410.47.41.255
2210.47.42.0/2310.47.42.1 – 10.47.43.25410.47.43.255
2310.47.44.0/2310.47.44.1 – 10.47.45.25410.47.45.255
2410.47.46.0/2310.47.46.1 – 10.47.47.25410.47.47.255
2510.47.48.0/2310.47.48.1 – 10.47.49.25410.47.49.255
2610.47.50.0/2310.47.50.1 – 10.47.51.25410.47.51.255
2710.47.52.0/2310.47.52.1 – 10.47.53.25410.47.53.255
2810.47.54.0/2310.47.54.1 – 10.47.55.25410.47.55.255
2910.47.56.0/2310.47.56.1 – 10.47.57.25410.47.57.255
3010.47.58.0/2310.47.58.1 – 10.47.59.25410.47.59.255
3110.47.60.0/2310.47.60.1 – 10.47.61.25410.47.61.255
3210.47.62.0/2310.47.62.1 – 10.47.63.25410.47.63.255
3310.47.64.0/2310.47.64.1 – 10.47.65.25410.47.65.255
3410.47.66.0/2310.47.66.1 – 10.47.67.25410.47.67.255
3510.47.68.0/2310.47.68.1 – 10.47.69.25410.47.69.255
3610.47.70.0/2310.47.70.1 – 10.47.71.25410.47.71.255
3710.47.72.0/2310.47.72.1 – 10.47.73.25410.47.73.255
3810.47.74.0/2310.47.74.1 – 10.47.75.25410.47.75.255
3910.47.76.0/2310.47.76.1 – 10.47.77.25410.47.77.255
4010.47.78.0/2310.47.78.1 – 10.47.79.25410.47.79.255
4110.47.80.0/2310.47.80.1 – 10.47.81.25410.47.81.255
4210.47.82.0/2310.47.82.1 – 10.47.83.25410.47.83.255
4310.47.84.0/2310.47.84.1 – 10.47.85.25410.47.85.255
4410.47.86.0/2310.47.86.1 – 10.47.87.25410.47.87.255
4510.47.88.0/2310.47.88.1 – 10.47.89.25410.47.89.255
4610.47.90.0/2310.47.90.1 – 10.47.91.25410.47.91.255
4710.47.92.0/2310.47.92.1 – 10.47.93.25410.47.93.255
4810.47.94.0/2310.47.94.1 – 10.47.95.25410.47.95.255
4910.47.96.0/2310.47.96.1 – 10.47.97.25410.47.97.255
5010.47.98.0/2310.47.98.1 – 10.47.99.25410.47.99.255
5110.47.100.0/2310.47.100.1 – 10.47.101.25410.47.101.255
5210.47.102.0/2310.47.102.1 – 10.47.103.25410.47.103.255
5310.47.104.0/2310.47.104.1 – 10.47.105.25410.47.105.255
5410.47.106.0/2310.47.106.1 – 10.47.107.25410.47.107.255
5510.47.108.0/2310.47.108.1 – 10.47.109.25410.47.109.255
5610.47.110.0/2310.47.110.1 – 10.47.111.25410.47.111.255
5710.47.112.0/2310.47.112.1 – 10.47.113.25410.47.113.255
5810.47.114.0/2310.47.114.1 – 10.47.115.25410.47.115.255
5910.47.116.0/2310.47.116.1 – 10.47.117.25410.47.117.255
6010.47.118.0/2310.47.118.1 – 10.47.119.25410.47.119.255
6110.47.120.0/2310.47.120.1 – 10.47.121.25410.47.121.255
6210.47.122.0/2310.47.122.1 – 10.47.123.25410.47.123.255
6310.47.124.0/2310.47.124.1 – 10.47.125.25410.47.125.255
6410.47.126.0/2310.47.126.1 – 10.47.127.25410.47.127.255
6510.47.128.0/2310.47.128.1 – 10.47.129.25410.47.129.255
6610.47.130.0/2310.47.130.1 – 10.47.131.25410.47.131.255
6710.47.132.0/2310.47.132.1 – 10.47.133.25410.47.133.255
6810.47.134.0/2310.47.134.1 – 10.47.135.25410.47.135.255
6910.47.136.0/2310.47.136.1 – 10.47.137.25410.47.137.255
7010.47.138.0/2310.47.138.1 – 10.47.139.25410.47.139.255
7110.47.140.0/2310.47.140.1 – 10.47.141.25410.47.141.255
7210.47.142.0/2310.47.142.1 – 10.47.143.25410.47.143.255
7310.47.144.0/2310.47.144.1 – 10.47.145.25410.47.145.255
7410.47.146.0/2310.47.146.1 – 10.47.147.25410.47.147.255
7510.47.148.0/2310.47.148.1 – 10.47.149.25410.47.149.255
7610.47.150.0/2310.47.150.1 – 10.47.151.25410.47.151.255
7710.47.152.0/2310.47.152.1 – 10.47.153.25410.47.153.255
7810.47.154.0/2310.47.154.1 – 10.47.155.25410.47.155.255
7910.47.156.0/2310.47.156.1 – 10.47.157.25410.47.157.255
8010.47.158.0/2310.47.158.1 – 10.47.159.25410.47.159.255
8110.47.160.0/2310.47.160.1 – 10.47.161.25410.47.161.255
8210.47.162.0/2310.47.162.1 – 10.47.163.25410.47.163.255
8310.47.164.0/2310.47.164.1 – 10.47.165.25410.47.165.255
8410.47.166.0/2310.47.166.1 – 10.47.167.25410.47.167.255
8510.47.168.0/2310.47.168.1 – 10.47.169.25410.47.169.255
8610.47.170.0/2310.47.170.1 – 10.47.171.25410.47.171.255
8710.47.172.0/2310.47.172.1 – 10.47.173.25410.47.173.255
8810.47.174.0/2310.47.174.1 – 10.47.175.25410.47.175.255
8910.47.176.0/2310.47.176.1 – 10.47.177.25410.47.177.255
9010.47.178.0/2310.47.178.1 – 10.47.179.25410.47.179.255
9110.47.180.0/2310.47.180.1 – 10.47.181.25410.47.181.255
9210.47.182.0/2310.47.182.1 – 10.47.183.25410.47.183.255
9310.47.184.0/2310.47.184.1 – 10.47.185.25410.47.185.255
9410.47.186.0/2310.47.186.1 – 10.47.187.25410.47.187.255
9510.47.188.0/2310.47.188.1 – 10.47.189.25410.47.189.255
9610.47.190.0/2310.47.190.1 – 10.47.191.25410.47.191.255
9710.47.192.0/2310.47.192.1 – 10.47.193.25410.47.193.255
9810.47.194.0/2310.47.194.1 – 10.47.195.25410.47.195.255
9910.47.196.0/2310.47.196.1 – 10.47.197.25410.47.197.255
10010.47.198.0/2310.47.198.1 – 10.47.199.25410.47.199.255
10110.47.200.0/2310.47.200.1 – 10.47.201.25410.47.201.255
10210.47.202.0/2310.47.202.1 – 10.47.203.25410.47.203.255
10310.47.204.0/2310.47.204.1 – 10.47.205.25410.47.205.255
10410.47.206.0/2310.47.206.1 – 10.47.207.25410.47.207.255
10510.47.208.0/2310.47.208.1 – 10.47.209.25410.47.209.255
10610.47.210.0/2310.47.210.1 – 10.47.211.25410.47.211.255
10710.47.212.0/2310.47.212.1 – 10.47.213.25410.47.213.255
10810.47.214.0/2310.47.214.1 – 10.47.215.25410.47.215.255
10910.47.216.0/2310.47.216.1 – 10.47.217.25410.47.217.255
11010.47.218.0/2310.47.218.1 – 10.47.219.25410.47.219.255
11110.47.220.0/2310.47.220.1 – 10.47.221.25410.47.221.255
11210.47.222.0/2310.47.222.1 – 10.47.223.25410.47.223.255
11310.47.224.0/2310.47.224.1 – 10.47.225.25410.47.225.255
11410.47.226.0/2310.47.226.1 – 10.47.227.25410.47.227.255
11510.47.228.0/2310.47.228.1 – 10.47.229.25410.47.229.255
11610.47.230.0/2310.47.230.1 – 10.47.231.25410.47.231.255
11710.47.232.0/2310.47.232.1 – 10.47.233.25410.47.233.255
11810.47.234.0/2310.47.234.1 – 10.47.235.25410.47.235.255
11910.47.236.0/2310.47.236.1 – 10.47.237.25410.47.237.255
12010.47.238.0/2310.47.238.1 – 10.47.239.25410.47.239.255
12110.47.240.0/2310.47.240.1 – 10.47.241.25410.47.241.255
12210.47.242.0/2310.47.242.1 – 10.47.243.25410.47.243.255
12310.47.244.0/2310.47.244.1 – 10.47.245.25410.47.245.255
12410.47.246.0/2310.47.246.1 – 10.47.247.25410.47.247.255
12510.47.248.0/2310.47.248.1 – 10.47.249.25410.47.249.255
12610.47.250.0/2310.47.250.1 – 10.47.251.25410.47.251.255
12710.47.252.0/2310.47.252.1 – 10.47.253.25410.47.253.255
12810.47.254.0/2310.47.254.1 – 10.47.255.25410.47.255.255
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 →