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)10.4.160.0/19
network10.4.160.0/19
broadcast10.4.191.255
first host10.4.160.1
last host10.4.191.254
subnet mask255.255.224.0
wildcard0.0.31.255
addresses8,192
usable hosts8,190
classA
ipcalc 10.4.160.0/19
address00001010.00000100.10100000.00000000
subnet mask11111111.11111111.11100000.00000000
network00001010.00000100.10100000.00000000
broadcast00001010.00000100.10111111.11111111
green = network part, grey = host part
hex0x0a04a000
decimal168075264
reverse dns0.160.4.10.in-addr.arpa
ipv4-mapped::ffff:a04:a000

/19 split into /26 · 128 subnets

close ×
#networkhost rangebroadcast
110.4.160.0/2610.4.160.1 – 10.4.160.6210.4.160.63
210.4.160.64/2610.4.160.65 – 10.4.160.12610.4.160.127
310.4.160.128/2610.4.160.129 – 10.4.160.19010.4.160.191
410.4.160.192/2610.4.160.193 – 10.4.160.25410.4.160.255
510.4.161.0/2610.4.161.1 – 10.4.161.6210.4.161.63
610.4.161.64/2610.4.161.65 – 10.4.161.12610.4.161.127
710.4.161.128/2610.4.161.129 – 10.4.161.19010.4.161.191
810.4.161.192/2610.4.161.193 – 10.4.161.25410.4.161.255
910.4.162.0/2610.4.162.1 – 10.4.162.6210.4.162.63
1010.4.162.64/2610.4.162.65 – 10.4.162.12610.4.162.127
1110.4.162.128/2610.4.162.129 – 10.4.162.19010.4.162.191
1210.4.162.192/2610.4.162.193 – 10.4.162.25410.4.162.255
1310.4.163.0/2610.4.163.1 – 10.4.163.6210.4.163.63
1410.4.163.64/2610.4.163.65 – 10.4.163.12610.4.163.127
1510.4.163.128/2610.4.163.129 – 10.4.163.19010.4.163.191
1610.4.163.192/2610.4.163.193 – 10.4.163.25410.4.163.255
1710.4.164.0/2610.4.164.1 – 10.4.164.6210.4.164.63
1810.4.164.64/2610.4.164.65 – 10.4.164.12610.4.164.127
1910.4.164.128/2610.4.164.129 – 10.4.164.19010.4.164.191
2010.4.164.192/2610.4.164.193 – 10.4.164.25410.4.164.255
2110.4.165.0/2610.4.165.1 – 10.4.165.6210.4.165.63
2210.4.165.64/2610.4.165.65 – 10.4.165.12610.4.165.127
2310.4.165.128/2610.4.165.129 – 10.4.165.19010.4.165.191
2410.4.165.192/2610.4.165.193 – 10.4.165.25410.4.165.255
2510.4.166.0/2610.4.166.1 – 10.4.166.6210.4.166.63
2610.4.166.64/2610.4.166.65 – 10.4.166.12610.4.166.127
2710.4.166.128/2610.4.166.129 – 10.4.166.19010.4.166.191
2810.4.166.192/2610.4.166.193 – 10.4.166.25410.4.166.255
2910.4.167.0/2610.4.167.1 – 10.4.167.6210.4.167.63
3010.4.167.64/2610.4.167.65 – 10.4.167.12610.4.167.127
3110.4.167.128/2610.4.167.129 – 10.4.167.19010.4.167.191
3210.4.167.192/2610.4.167.193 – 10.4.167.25410.4.167.255
3310.4.168.0/2610.4.168.1 – 10.4.168.6210.4.168.63
3410.4.168.64/2610.4.168.65 – 10.4.168.12610.4.168.127
3510.4.168.128/2610.4.168.129 – 10.4.168.19010.4.168.191
3610.4.168.192/2610.4.168.193 – 10.4.168.25410.4.168.255
3710.4.169.0/2610.4.169.1 – 10.4.169.6210.4.169.63
3810.4.169.64/2610.4.169.65 – 10.4.169.12610.4.169.127
3910.4.169.128/2610.4.169.129 – 10.4.169.19010.4.169.191
4010.4.169.192/2610.4.169.193 – 10.4.169.25410.4.169.255
4110.4.170.0/2610.4.170.1 – 10.4.170.6210.4.170.63
4210.4.170.64/2610.4.170.65 – 10.4.170.12610.4.170.127
4310.4.170.128/2610.4.170.129 – 10.4.170.19010.4.170.191
4410.4.170.192/2610.4.170.193 – 10.4.170.25410.4.170.255
4510.4.171.0/2610.4.171.1 – 10.4.171.6210.4.171.63
4610.4.171.64/2610.4.171.65 – 10.4.171.12610.4.171.127
4710.4.171.128/2610.4.171.129 – 10.4.171.19010.4.171.191
4810.4.171.192/2610.4.171.193 – 10.4.171.25410.4.171.255
4910.4.172.0/2610.4.172.1 – 10.4.172.6210.4.172.63
5010.4.172.64/2610.4.172.65 – 10.4.172.12610.4.172.127
5110.4.172.128/2610.4.172.129 – 10.4.172.19010.4.172.191
5210.4.172.192/2610.4.172.193 – 10.4.172.25410.4.172.255
5310.4.173.0/2610.4.173.1 – 10.4.173.6210.4.173.63
5410.4.173.64/2610.4.173.65 – 10.4.173.12610.4.173.127
5510.4.173.128/2610.4.173.129 – 10.4.173.19010.4.173.191
5610.4.173.192/2610.4.173.193 – 10.4.173.25410.4.173.255
5710.4.174.0/2610.4.174.1 – 10.4.174.6210.4.174.63
5810.4.174.64/2610.4.174.65 – 10.4.174.12610.4.174.127
5910.4.174.128/2610.4.174.129 – 10.4.174.19010.4.174.191
6010.4.174.192/2610.4.174.193 – 10.4.174.25410.4.174.255
6110.4.175.0/2610.4.175.1 – 10.4.175.6210.4.175.63
6210.4.175.64/2610.4.175.65 – 10.4.175.12610.4.175.127
6310.4.175.128/2610.4.175.129 – 10.4.175.19010.4.175.191
6410.4.175.192/2610.4.175.193 – 10.4.175.25410.4.175.255
6510.4.176.0/2610.4.176.1 – 10.4.176.6210.4.176.63
6610.4.176.64/2610.4.176.65 – 10.4.176.12610.4.176.127
6710.4.176.128/2610.4.176.129 – 10.4.176.19010.4.176.191
6810.4.176.192/2610.4.176.193 – 10.4.176.25410.4.176.255
6910.4.177.0/2610.4.177.1 – 10.4.177.6210.4.177.63
7010.4.177.64/2610.4.177.65 – 10.4.177.12610.4.177.127
7110.4.177.128/2610.4.177.129 – 10.4.177.19010.4.177.191
7210.4.177.192/2610.4.177.193 – 10.4.177.25410.4.177.255
7310.4.178.0/2610.4.178.1 – 10.4.178.6210.4.178.63
7410.4.178.64/2610.4.178.65 – 10.4.178.12610.4.178.127
7510.4.178.128/2610.4.178.129 – 10.4.178.19010.4.178.191
7610.4.178.192/2610.4.178.193 – 10.4.178.25410.4.178.255
7710.4.179.0/2610.4.179.1 – 10.4.179.6210.4.179.63
7810.4.179.64/2610.4.179.65 – 10.4.179.12610.4.179.127
7910.4.179.128/2610.4.179.129 – 10.4.179.19010.4.179.191
8010.4.179.192/2610.4.179.193 – 10.4.179.25410.4.179.255
8110.4.180.0/2610.4.180.1 – 10.4.180.6210.4.180.63
8210.4.180.64/2610.4.180.65 – 10.4.180.12610.4.180.127
8310.4.180.128/2610.4.180.129 – 10.4.180.19010.4.180.191
8410.4.180.192/2610.4.180.193 – 10.4.180.25410.4.180.255
8510.4.181.0/2610.4.181.1 – 10.4.181.6210.4.181.63
8610.4.181.64/2610.4.181.65 – 10.4.181.12610.4.181.127
8710.4.181.128/2610.4.181.129 – 10.4.181.19010.4.181.191
8810.4.181.192/2610.4.181.193 – 10.4.181.25410.4.181.255
8910.4.182.0/2610.4.182.1 – 10.4.182.6210.4.182.63
9010.4.182.64/2610.4.182.65 – 10.4.182.12610.4.182.127
9110.4.182.128/2610.4.182.129 – 10.4.182.19010.4.182.191
9210.4.182.192/2610.4.182.193 – 10.4.182.25410.4.182.255
9310.4.183.0/2610.4.183.1 – 10.4.183.6210.4.183.63
9410.4.183.64/2610.4.183.65 – 10.4.183.12610.4.183.127
9510.4.183.128/2610.4.183.129 – 10.4.183.19010.4.183.191
9610.4.183.192/2610.4.183.193 – 10.4.183.25410.4.183.255
9710.4.184.0/2610.4.184.1 – 10.4.184.6210.4.184.63
9810.4.184.64/2610.4.184.65 – 10.4.184.12610.4.184.127
9910.4.184.128/2610.4.184.129 – 10.4.184.19010.4.184.191
10010.4.184.192/2610.4.184.193 – 10.4.184.25410.4.184.255
10110.4.185.0/2610.4.185.1 – 10.4.185.6210.4.185.63
10210.4.185.64/2610.4.185.65 – 10.4.185.12610.4.185.127
10310.4.185.128/2610.4.185.129 – 10.4.185.19010.4.185.191
10410.4.185.192/2610.4.185.193 – 10.4.185.25410.4.185.255
10510.4.186.0/2610.4.186.1 – 10.4.186.6210.4.186.63
10610.4.186.64/2610.4.186.65 – 10.4.186.12610.4.186.127
10710.4.186.128/2610.4.186.129 – 10.4.186.19010.4.186.191
10810.4.186.192/2610.4.186.193 – 10.4.186.25410.4.186.255
10910.4.187.0/2610.4.187.1 – 10.4.187.6210.4.187.63
11010.4.187.64/2610.4.187.65 – 10.4.187.12610.4.187.127
11110.4.187.128/2610.4.187.129 – 10.4.187.19010.4.187.191
11210.4.187.192/2610.4.187.193 – 10.4.187.25410.4.187.255
11310.4.188.0/2610.4.188.1 – 10.4.188.6210.4.188.63
11410.4.188.64/2610.4.188.65 – 10.4.188.12610.4.188.127
11510.4.188.128/2610.4.188.129 – 10.4.188.19010.4.188.191
11610.4.188.192/2610.4.188.193 – 10.4.188.25410.4.188.255
11710.4.189.0/2610.4.189.1 – 10.4.189.6210.4.189.63
11810.4.189.64/2610.4.189.65 – 10.4.189.12610.4.189.127
11910.4.189.128/2610.4.189.129 – 10.4.189.19010.4.189.191
12010.4.189.192/2610.4.189.193 – 10.4.189.25410.4.189.255
12110.4.190.0/2610.4.190.1 – 10.4.190.6210.4.190.63
12210.4.190.64/2610.4.190.65 – 10.4.190.12610.4.190.127
12310.4.190.128/2610.4.190.129 – 10.4.190.19010.4.190.191
12410.4.190.192/2610.4.190.193 – 10.4.190.25410.4.190.255
12510.4.191.0/2610.4.191.1 – 10.4.191.6210.4.191.63
12610.4.191.64/2610.4.191.65 – 10.4.191.12610.4.191.127
12710.4.191.128/2610.4.191.129 – 10.4.191.19010.4.191.191
12810.4.191.192/2610.4.191.193 – 10.4.191.25410.4.191.255
01 / table

IPv4 CIDR prefix table.

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

prefixsubnet maskaddresseshostsin your /19
/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-
/16255.255.0.065,53665,534-
/17255.255.128.032,76832,766-
/18255.255.192.016,38416,382-
/19255.255.224.08,1928,1901
/20255.255.240.04,0964,0942 split →
/21255.255.248.02,0482,0464 split →
/22255.255.252.01,0241,0228 split →
/23255.255.254.051251016 split →
/24255.255.255.025625432 split →
/25255.255.255.12812812664 split →
/26255.255.255.1926462128 split →
/27255.255.255.2243230256 split →
/28255.255.255.2401614512 split →
/29255.255.255.248861,024 split →
/30255.255.255.252422,048 split →
/31255.255.255.254224,096 split →
/32255.255.255.255118,192 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 →