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)10.30.160.0/19
network10.30.160.0/19
broadcast10.30.191.255
first host10.30.160.1
last host10.30.191.254
subnet mask255.255.224.0
wildcard0.0.31.255
addresses8,192
usable hosts8,190
classA
ipcalc 10.30.160.0/19
address00001010.00011110.10100000.00000000
subnet mask11111111.11111111.11100000.00000000
network00001010.00011110.10100000.00000000
broadcast00001010.00011110.10111111.11111111
green = network part, grey = host part
hex0x0a1ea000
decimal169779200
reverse dns0.160.30.10.in-addr.arpa
ipv4-mapped::ffff:a1e:a000

/19 split into /26 · 128 subnets

close ×
#networkhost rangebroadcast
110.30.160.0/2610.30.160.1 – 10.30.160.6210.30.160.63
210.30.160.64/2610.30.160.65 – 10.30.160.12610.30.160.127
310.30.160.128/2610.30.160.129 – 10.30.160.19010.30.160.191
410.30.160.192/2610.30.160.193 – 10.30.160.25410.30.160.255
510.30.161.0/2610.30.161.1 – 10.30.161.6210.30.161.63
610.30.161.64/2610.30.161.65 – 10.30.161.12610.30.161.127
710.30.161.128/2610.30.161.129 – 10.30.161.19010.30.161.191
810.30.161.192/2610.30.161.193 – 10.30.161.25410.30.161.255
910.30.162.0/2610.30.162.1 – 10.30.162.6210.30.162.63
1010.30.162.64/2610.30.162.65 – 10.30.162.12610.30.162.127
1110.30.162.128/2610.30.162.129 – 10.30.162.19010.30.162.191
1210.30.162.192/2610.30.162.193 – 10.30.162.25410.30.162.255
1310.30.163.0/2610.30.163.1 – 10.30.163.6210.30.163.63
1410.30.163.64/2610.30.163.65 – 10.30.163.12610.30.163.127
1510.30.163.128/2610.30.163.129 – 10.30.163.19010.30.163.191
1610.30.163.192/2610.30.163.193 – 10.30.163.25410.30.163.255
1710.30.164.0/2610.30.164.1 – 10.30.164.6210.30.164.63
1810.30.164.64/2610.30.164.65 – 10.30.164.12610.30.164.127
1910.30.164.128/2610.30.164.129 – 10.30.164.19010.30.164.191
2010.30.164.192/2610.30.164.193 – 10.30.164.25410.30.164.255
2110.30.165.0/2610.30.165.1 – 10.30.165.6210.30.165.63
2210.30.165.64/2610.30.165.65 – 10.30.165.12610.30.165.127
2310.30.165.128/2610.30.165.129 – 10.30.165.19010.30.165.191
2410.30.165.192/2610.30.165.193 – 10.30.165.25410.30.165.255
2510.30.166.0/2610.30.166.1 – 10.30.166.6210.30.166.63
2610.30.166.64/2610.30.166.65 – 10.30.166.12610.30.166.127
2710.30.166.128/2610.30.166.129 – 10.30.166.19010.30.166.191
2810.30.166.192/2610.30.166.193 – 10.30.166.25410.30.166.255
2910.30.167.0/2610.30.167.1 – 10.30.167.6210.30.167.63
3010.30.167.64/2610.30.167.65 – 10.30.167.12610.30.167.127
3110.30.167.128/2610.30.167.129 – 10.30.167.19010.30.167.191
3210.30.167.192/2610.30.167.193 – 10.30.167.25410.30.167.255
3310.30.168.0/2610.30.168.1 – 10.30.168.6210.30.168.63
3410.30.168.64/2610.30.168.65 – 10.30.168.12610.30.168.127
3510.30.168.128/2610.30.168.129 – 10.30.168.19010.30.168.191
3610.30.168.192/2610.30.168.193 – 10.30.168.25410.30.168.255
3710.30.169.0/2610.30.169.1 – 10.30.169.6210.30.169.63
3810.30.169.64/2610.30.169.65 – 10.30.169.12610.30.169.127
3910.30.169.128/2610.30.169.129 – 10.30.169.19010.30.169.191
4010.30.169.192/2610.30.169.193 – 10.30.169.25410.30.169.255
4110.30.170.0/2610.30.170.1 – 10.30.170.6210.30.170.63
4210.30.170.64/2610.30.170.65 – 10.30.170.12610.30.170.127
4310.30.170.128/2610.30.170.129 – 10.30.170.19010.30.170.191
4410.30.170.192/2610.30.170.193 – 10.30.170.25410.30.170.255
4510.30.171.0/2610.30.171.1 – 10.30.171.6210.30.171.63
4610.30.171.64/2610.30.171.65 – 10.30.171.12610.30.171.127
4710.30.171.128/2610.30.171.129 – 10.30.171.19010.30.171.191
4810.30.171.192/2610.30.171.193 – 10.30.171.25410.30.171.255
4910.30.172.0/2610.30.172.1 – 10.30.172.6210.30.172.63
5010.30.172.64/2610.30.172.65 – 10.30.172.12610.30.172.127
5110.30.172.128/2610.30.172.129 – 10.30.172.19010.30.172.191
5210.30.172.192/2610.30.172.193 – 10.30.172.25410.30.172.255
5310.30.173.0/2610.30.173.1 – 10.30.173.6210.30.173.63
5410.30.173.64/2610.30.173.65 – 10.30.173.12610.30.173.127
5510.30.173.128/2610.30.173.129 – 10.30.173.19010.30.173.191
5610.30.173.192/2610.30.173.193 – 10.30.173.25410.30.173.255
5710.30.174.0/2610.30.174.1 – 10.30.174.6210.30.174.63
5810.30.174.64/2610.30.174.65 – 10.30.174.12610.30.174.127
5910.30.174.128/2610.30.174.129 – 10.30.174.19010.30.174.191
6010.30.174.192/2610.30.174.193 – 10.30.174.25410.30.174.255
6110.30.175.0/2610.30.175.1 – 10.30.175.6210.30.175.63
6210.30.175.64/2610.30.175.65 – 10.30.175.12610.30.175.127
6310.30.175.128/2610.30.175.129 – 10.30.175.19010.30.175.191
6410.30.175.192/2610.30.175.193 – 10.30.175.25410.30.175.255
6510.30.176.0/2610.30.176.1 – 10.30.176.6210.30.176.63
6610.30.176.64/2610.30.176.65 – 10.30.176.12610.30.176.127
6710.30.176.128/2610.30.176.129 – 10.30.176.19010.30.176.191
6810.30.176.192/2610.30.176.193 – 10.30.176.25410.30.176.255
6910.30.177.0/2610.30.177.1 – 10.30.177.6210.30.177.63
7010.30.177.64/2610.30.177.65 – 10.30.177.12610.30.177.127
7110.30.177.128/2610.30.177.129 – 10.30.177.19010.30.177.191
7210.30.177.192/2610.30.177.193 – 10.30.177.25410.30.177.255
7310.30.178.0/2610.30.178.1 – 10.30.178.6210.30.178.63
7410.30.178.64/2610.30.178.65 – 10.30.178.12610.30.178.127
7510.30.178.128/2610.30.178.129 – 10.30.178.19010.30.178.191
7610.30.178.192/2610.30.178.193 – 10.30.178.25410.30.178.255
7710.30.179.0/2610.30.179.1 – 10.30.179.6210.30.179.63
7810.30.179.64/2610.30.179.65 – 10.30.179.12610.30.179.127
7910.30.179.128/2610.30.179.129 – 10.30.179.19010.30.179.191
8010.30.179.192/2610.30.179.193 – 10.30.179.25410.30.179.255
8110.30.180.0/2610.30.180.1 – 10.30.180.6210.30.180.63
8210.30.180.64/2610.30.180.65 – 10.30.180.12610.30.180.127
8310.30.180.128/2610.30.180.129 – 10.30.180.19010.30.180.191
8410.30.180.192/2610.30.180.193 – 10.30.180.25410.30.180.255
8510.30.181.0/2610.30.181.1 – 10.30.181.6210.30.181.63
8610.30.181.64/2610.30.181.65 – 10.30.181.12610.30.181.127
8710.30.181.128/2610.30.181.129 – 10.30.181.19010.30.181.191
8810.30.181.192/2610.30.181.193 – 10.30.181.25410.30.181.255
8910.30.182.0/2610.30.182.1 – 10.30.182.6210.30.182.63
9010.30.182.64/2610.30.182.65 – 10.30.182.12610.30.182.127
9110.30.182.128/2610.30.182.129 – 10.30.182.19010.30.182.191
9210.30.182.192/2610.30.182.193 – 10.30.182.25410.30.182.255
9310.30.183.0/2610.30.183.1 – 10.30.183.6210.30.183.63
9410.30.183.64/2610.30.183.65 – 10.30.183.12610.30.183.127
9510.30.183.128/2610.30.183.129 – 10.30.183.19010.30.183.191
9610.30.183.192/2610.30.183.193 – 10.30.183.25410.30.183.255
9710.30.184.0/2610.30.184.1 – 10.30.184.6210.30.184.63
9810.30.184.64/2610.30.184.65 – 10.30.184.12610.30.184.127
9910.30.184.128/2610.30.184.129 – 10.30.184.19010.30.184.191
10010.30.184.192/2610.30.184.193 – 10.30.184.25410.30.184.255
10110.30.185.0/2610.30.185.1 – 10.30.185.6210.30.185.63
10210.30.185.64/2610.30.185.65 – 10.30.185.12610.30.185.127
10310.30.185.128/2610.30.185.129 – 10.30.185.19010.30.185.191
10410.30.185.192/2610.30.185.193 – 10.30.185.25410.30.185.255
10510.30.186.0/2610.30.186.1 – 10.30.186.6210.30.186.63
10610.30.186.64/2610.30.186.65 – 10.30.186.12610.30.186.127
10710.30.186.128/2610.30.186.129 – 10.30.186.19010.30.186.191
10810.30.186.192/2610.30.186.193 – 10.30.186.25410.30.186.255
10910.30.187.0/2610.30.187.1 – 10.30.187.6210.30.187.63
11010.30.187.64/2610.30.187.65 – 10.30.187.12610.30.187.127
11110.30.187.128/2610.30.187.129 – 10.30.187.19010.30.187.191
11210.30.187.192/2610.30.187.193 – 10.30.187.25410.30.187.255
11310.30.188.0/2610.30.188.1 – 10.30.188.6210.30.188.63
11410.30.188.64/2610.30.188.65 – 10.30.188.12610.30.188.127
11510.30.188.128/2610.30.188.129 – 10.30.188.19010.30.188.191
11610.30.188.192/2610.30.188.193 – 10.30.188.25410.30.188.255
11710.30.189.0/2610.30.189.1 – 10.30.189.6210.30.189.63
11810.30.189.64/2610.30.189.65 – 10.30.189.12610.30.189.127
11910.30.189.128/2610.30.189.129 – 10.30.189.19010.30.189.191
12010.30.189.192/2610.30.189.193 – 10.30.189.25410.30.189.255
12110.30.190.0/2610.30.190.1 – 10.30.190.6210.30.190.63
12210.30.190.64/2610.30.190.65 – 10.30.190.12610.30.190.127
12310.30.190.128/2610.30.190.129 – 10.30.190.19010.30.190.191
12410.30.190.192/2610.30.190.193 – 10.30.190.25410.30.190.255
12510.30.191.0/2610.30.191.1 – 10.30.191.6210.30.191.63
12610.30.191.64/2610.30.191.65 – 10.30.191.12610.30.191.127
12710.30.191.128/2610.30.191.129 – 10.30.191.19010.30.191.191
12810.30.191.192/2610.30.191.193 – 10.30.191.25410.30.191.255
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 →