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
private IP (RFC 1918)10.188.0.0/15
network10.188.0.0/15
broadcast10.189.255.255
first host10.188.0.1
last host10.189.255.254
subnet mask255.254.0.0
wildcard0.1.255.255
addresses131,072
usable hosts131,070
classA
ipcalc 10.188.0.0/15
address00001010.10111100.00000000.00000000
subnet mask11111111.11111110.00000000.00000000
network00001010.10111100.00000000.00000000
broadcast00001010.10111101.11111111.11111111
green = network part, grey = host part
hex0x0abc0000
decimal180092928
reverse dns0.0.188.10.in-addr.arpa
ipv4-mapped::ffff:abc:0

/15 split into /22 · 128 subnets

close ×
#networkhost rangebroadcast
110.188.0.0/2210.188.0.1 – 10.188.3.25410.188.3.255
210.188.4.0/2210.188.4.1 – 10.188.7.25410.188.7.255
310.188.8.0/2210.188.8.1 – 10.188.11.25410.188.11.255
410.188.12.0/2210.188.12.1 – 10.188.15.25410.188.15.255
510.188.16.0/2210.188.16.1 – 10.188.19.25410.188.19.255
610.188.20.0/2210.188.20.1 – 10.188.23.25410.188.23.255
710.188.24.0/2210.188.24.1 – 10.188.27.25410.188.27.255
810.188.28.0/2210.188.28.1 – 10.188.31.25410.188.31.255
910.188.32.0/2210.188.32.1 – 10.188.35.25410.188.35.255
1010.188.36.0/2210.188.36.1 – 10.188.39.25410.188.39.255
1110.188.40.0/2210.188.40.1 – 10.188.43.25410.188.43.255
1210.188.44.0/2210.188.44.1 – 10.188.47.25410.188.47.255
1310.188.48.0/2210.188.48.1 – 10.188.51.25410.188.51.255
1410.188.52.0/2210.188.52.1 – 10.188.55.25410.188.55.255
1510.188.56.0/2210.188.56.1 – 10.188.59.25410.188.59.255
1610.188.60.0/2210.188.60.1 – 10.188.63.25410.188.63.255
1710.188.64.0/2210.188.64.1 – 10.188.67.25410.188.67.255
1810.188.68.0/2210.188.68.1 – 10.188.71.25410.188.71.255
1910.188.72.0/2210.188.72.1 – 10.188.75.25410.188.75.255
2010.188.76.0/2210.188.76.1 – 10.188.79.25410.188.79.255
2110.188.80.0/2210.188.80.1 – 10.188.83.25410.188.83.255
2210.188.84.0/2210.188.84.1 – 10.188.87.25410.188.87.255
2310.188.88.0/2210.188.88.1 – 10.188.91.25410.188.91.255
2410.188.92.0/2210.188.92.1 – 10.188.95.25410.188.95.255
2510.188.96.0/2210.188.96.1 – 10.188.99.25410.188.99.255
2610.188.100.0/2210.188.100.1 – 10.188.103.25410.188.103.255
2710.188.104.0/2210.188.104.1 – 10.188.107.25410.188.107.255
2810.188.108.0/2210.188.108.1 – 10.188.111.25410.188.111.255
2910.188.112.0/2210.188.112.1 – 10.188.115.25410.188.115.255
3010.188.116.0/2210.188.116.1 – 10.188.119.25410.188.119.255
3110.188.120.0/2210.188.120.1 – 10.188.123.25410.188.123.255
3210.188.124.0/2210.188.124.1 – 10.188.127.25410.188.127.255
3310.188.128.0/2210.188.128.1 – 10.188.131.25410.188.131.255
3410.188.132.0/2210.188.132.1 – 10.188.135.25410.188.135.255
3510.188.136.0/2210.188.136.1 – 10.188.139.25410.188.139.255
3610.188.140.0/2210.188.140.1 – 10.188.143.25410.188.143.255
3710.188.144.0/2210.188.144.1 – 10.188.147.25410.188.147.255
3810.188.148.0/2210.188.148.1 – 10.188.151.25410.188.151.255
3910.188.152.0/2210.188.152.1 – 10.188.155.25410.188.155.255
4010.188.156.0/2210.188.156.1 – 10.188.159.25410.188.159.255
4110.188.160.0/2210.188.160.1 – 10.188.163.25410.188.163.255
4210.188.164.0/2210.188.164.1 – 10.188.167.25410.188.167.255
4310.188.168.0/2210.188.168.1 – 10.188.171.25410.188.171.255
4410.188.172.0/2210.188.172.1 – 10.188.175.25410.188.175.255
4510.188.176.0/2210.188.176.1 – 10.188.179.25410.188.179.255
4610.188.180.0/2210.188.180.1 – 10.188.183.25410.188.183.255
4710.188.184.0/2210.188.184.1 – 10.188.187.25410.188.187.255
4810.188.188.0/2210.188.188.1 – 10.188.191.25410.188.191.255
4910.188.192.0/2210.188.192.1 – 10.188.195.25410.188.195.255
5010.188.196.0/2210.188.196.1 – 10.188.199.25410.188.199.255
5110.188.200.0/2210.188.200.1 – 10.188.203.25410.188.203.255
5210.188.204.0/2210.188.204.1 – 10.188.207.25410.188.207.255
5310.188.208.0/2210.188.208.1 – 10.188.211.25410.188.211.255
5410.188.212.0/2210.188.212.1 – 10.188.215.25410.188.215.255
5510.188.216.0/2210.188.216.1 – 10.188.219.25410.188.219.255
5610.188.220.0/2210.188.220.1 – 10.188.223.25410.188.223.255
5710.188.224.0/2210.188.224.1 – 10.188.227.25410.188.227.255
5810.188.228.0/2210.188.228.1 – 10.188.231.25410.188.231.255
5910.188.232.0/2210.188.232.1 – 10.188.235.25410.188.235.255
6010.188.236.0/2210.188.236.1 – 10.188.239.25410.188.239.255
6110.188.240.0/2210.188.240.1 – 10.188.243.25410.188.243.255
6210.188.244.0/2210.188.244.1 – 10.188.247.25410.188.247.255
6310.188.248.0/2210.188.248.1 – 10.188.251.25410.188.251.255
6410.188.252.0/2210.188.252.1 – 10.188.255.25410.188.255.255
6510.189.0.0/2210.189.0.1 – 10.189.3.25410.189.3.255
6610.189.4.0/2210.189.4.1 – 10.189.7.25410.189.7.255
6710.189.8.0/2210.189.8.1 – 10.189.11.25410.189.11.255
6810.189.12.0/2210.189.12.1 – 10.189.15.25410.189.15.255
6910.189.16.0/2210.189.16.1 – 10.189.19.25410.189.19.255
7010.189.20.0/2210.189.20.1 – 10.189.23.25410.189.23.255
7110.189.24.0/2210.189.24.1 – 10.189.27.25410.189.27.255
7210.189.28.0/2210.189.28.1 – 10.189.31.25410.189.31.255
7310.189.32.0/2210.189.32.1 – 10.189.35.25410.189.35.255
7410.189.36.0/2210.189.36.1 – 10.189.39.25410.189.39.255
7510.189.40.0/2210.189.40.1 – 10.189.43.25410.189.43.255
7610.189.44.0/2210.189.44.1 – 10.189.47.25410.189.47.255
7710.189.48.0/2210.189.48.1 – 10.189.51.25410.189.51.255
7810.189.52.0/2210.189.52.1 – 10.189.55.25410.189.55.255
7910.189.56.0/2210.189.56.1 – 10.189.59.25410.189.59.255
8010.189.60.0/2210.189.60.1 – 10.189.63.25410.189.63.255
8110.189.64.0/2210.189.64.1 – 10.189.67.25410.189.67.255
8210.189.68.0/2210.189.68.1 – 10.189.71.25410.189.71.255
8310.189.72.0/2210.189.72.1 – 10.189.75.25410.189.75.255
8410.189.76.0/2210.189.76.1 – 10.189.79.25410.189.79.255
8510.189.80.0/2210.189.80.1 – 10.189.83.25410.189.83.255
8610.189.84.0/2210.189.84.1 – 10.189.87.25410.189.87.255
8710.189.88.0/2210.189.88.1 – 10.189.91.25410.189.91.255
8810.189.92.0/2210.189.92.1 – 10.189.95.25410.189.95.255
8910.189.96.0/2210.189.96.1 – 10.189.99.25410.189.99.255
9010.189.100.0/2210.189.100.1 – 10.189.103.25410.189.103.255
9110.189.104.0/2210.189.104.1 – 10.189.107.25410.189.107.255
9210.189.108.0/2210.189.108.1 – 10.189.111.25410.189.111.255
9310.189.112.0/2210.189.112.1 – 10.189.115.25410.189.115.255
9410.189.116.0/2210.189.116.1 – 10.189.119.25410.189.119.255
9510.189.120.0/2210.189.120.1 – 10.189.123.25410.189.123.255
9610.189.124.0/2210.189.124.1 – 10.189.127.25410.189.127.255
9710.189.128.0/2210.189.128.1 – 10.189.131.25410.189.131.255
9810.189.132.0/2210.189.132.1 – 10.189.135.25410.189.135.255
9910.189.136.0/2210.189.136.1 – 10.189.139.25410.189.139.255
10010.189.140.0/2210.189.140.1 – 10.189.143.25410.189.143.255
10110.189.144.0/2210.189.144.1 – 10.189.147.25410.189.147.255
10210.189.148.0/2210.189.148.1 – 10.189.151.25410.189.151.255
10310.189.152.0/2210.189.152.1 – 10.189.155.25410.189.155.255
10410.189.156.0/2210.189.156.1 – 10.189.159.25410.189.159.255
10510.189.160.0/2210.189.160.1 – 10.189.163.25410.189.163.255
10610.189.164.0/2210.189.164.1 – 10.189.167.25410.189.167.255
10710.189.168.0/2210.189.168.1 – 10.189.171.25410.189.171.255
10810.189.172.0/2210.189.172.1 – 10.189.175.25410.189.175.255
10910.189.176.0/2210.189.176.1 – 10.189.179.25410.189.179.255
11010.189.180.0/2210.189.180.1 – 10.189.183.25410.189.183.255
11110.189.184.0/2210.189.184.1 – 10.189.187.25410.189.187.255
11210.189.188.0/2210.189.188.1 – 10.189.191.25410.189.191.255
11310.189.192.0/2210.189.192.1 – 10.189.195.25410.189.195.255
11410.189.196.0/2210.189.196.1 – 10.189.199.25410.189.199.255
11510.189.200.0/2210.189.200.1 – 10.189.203.25410.189.203.255
11610.189.204.0/2210.189.204.1 – 10.189.207.25410.189.207.255
11710.189.208.0/2210.189.208.1 – 10.189.211.25410.189.211.255
11810.189.212.0/2210.189.212.1 – 10.189.215.25410.189.215.255
11910.189.216.0/2210.189.216.1 – 10.189.219.25410.189.219.255
12010.189.220.0/2210.189.220.1 – 10.189.223.25410.189.223.255
12110.189.224.0/2210.189.224.1 – 10.189.227.25410.189.227.255
12210.189.228.0/2210.189.228.1 – 10.189.231.25410.189.231.255
12310.189.232.0/2210.189.232.1 – 10.189.235.25410.189.235.255
12410.189.236.0/2210.189.236.1 – 10.189.239.25410.189.239.255
12510.189.240.0/2210.189.240.1 – 10.189.243.25410.189.243.255
12610.189.244.0/2210.189.244.1 – 10.189.247.25410.189.247.255
12710.189.248.0/2210.189.248.1 – 10.189.251.25410.189.251.255
12810.189.252.0/2210.189.252.1 – 10.189.255.25410.189.255.255
01 / table

IPv4 CIDR prefix table.

Click a prefix longer than your network to split it into subnets.

prefixsubnet maskaddresseshostsin your /15
/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-
/15255.254.0.0131,072131,0701
/16255.255.0.065,53665,5342 split →
/17255.255.128.032,76832,7664 split →
/18255.255.192.016,38416,3828 split →
/19255.255.224.08,1928,19016 split →
/20255.255.240.04,0964,09432 split →
/21255.255.248.02,0482,04664 split →
/22255.255.252.01,0241,022128 split →
/23255.255.254.0512510256 split →
/24255.255.255.0256254512 split →
/25255.255.255.1281281261,024 split →
/26255.255.255.19264622,048 split →
/27255.255.255.22432304,096 split →
/28255.255.255.24016148,192 split →
/29255.255.255.2488616,384 split →
/30255.255.255.2524232,768 split →
/31255.255.255.2542265,536 split →
/32255.255.255.25511131,072 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 →