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)10.13.192.0/19
network10.13.192.0/19
broadcast10.13.223.255
first host10.13.192.1
last host10.13.223.254
subnet mask255.255.224.0
wildcard0.0.31.255
addresses8,192
usable hosts8,190
classA
ipcalc 10.13.192.0/19
address00001010.00001101.11000000.00000000
subnet mask11111111.11111111.11100000.00000000
network00001010.00001101.11000000.00000000
broadcast00001010.00001101.11011111.11111111
green = network part, grey = host part
hex0x0a0dc000
decimal168673280
reverse dns0.192.13.10.in-addr.arpa
ipv4-mapped::ffff:a0d:c000

/19 split into /26 · 128 subnets

close ×
#networkhost rangebroadcast
110.13.192.0/2610.13.192.1 – 10.13.192.6210.13.192.63
210.13.192.64/2610.13.192.65 – 10.13.192.12610.13.192.127
310.13.192.128/2610.13.192.129 – 10.13.192.19010.13.192.191
410.13.192.192/2610.13.192.193 – 10.13.192.25410.13.192.255
510.13.193.0/2610.13.193.1 – 10.13.193.6210.13.193.63
610.13.193.64/2610.13.193.65 – 10.13.193.12610.13.193.127
710.13.193.128/2610.13.193.129 – 10.13.193.19010.13.193.191
810.13.193.192/2610.13.193.193 – 10.13.193.25410.13.193.255
910.13.194.0/2610.13.194.1 – 10.13.194.6210.13.194.63
1010.13.194.64/2610.13.194.65 – 10.13.194.12610.13.194.127
1110.13.194.128/2610.13.194.129 – 10.13.194.19010.13.194.191
1210.13.194.192/2610.13.194.193 – 10.13.194.25410.13.194.255
1310.13.195.0/2610.13.195.1 – 10.13.195.6210.13.195.63
1410.13.195.64/2610.13.195.65 – 10.13.195.12610.13.195.127
1510.13.195.128/2610.13.195.129 – 10.13.195.19010.13.195.191
1610.13.195.192/2610.13.195.193 – 10.13.195.25410.13.195.255
1710.13.196.0/2610.13.196.1 – 10.13.196.6210.13.196.63
1810.13.196.64/2610.13.196.65 – 10.13.196.12610.13.196.127
1910.13.196.128/2610.13.196.129 – 10.13.196.19010.13.196.191
2010.13.196.192/2610.13.196.193 – 10.13.196.25410.13.196.255
2110.13.197.0/2610.13.197.1 – 10.13.197.6210.13.197.63
2210.13.197.64/2610.13.197.65 – 10.13.197.12610.13.197.127
2310.13.197.128/2610.13.197.129 – 10.13.197.19010.13.197.191
2410.13.197.192/2610.13.197.193 – 10.13.197.25410.13.197.255
2510.13.198.0/2610.13.198.1 – 10.13.198.6210.13.198.63
2610.13.198.64/2610.13.198.65 – 10.13.198.12610.13.198.127
2710.13.198.128/2610.13.198.129 – 10.13.198.19010.13.198.191
2810.13.198.192/2610.13.198.193 – 10.13.198.25410.13.198.255
2910.13.199.0/2610.13.199.1 – 10.13.199.6210.13.199.63
3010.13.199.64/2610.13.199.65 – 10.13.199.12610.13.199.127
3110.13.199.128/2610.13.199.129 – 10.13.199.19010.13.199.191
3210.13.199.192/2610.13.199.193 – 10.13.199.25410.13.199.255
3310.13.200.0/2610.13.200.1 – 10.13.200.6210.13.200.63
3410.13.200.64/2610.13.200.65 – 10.13.200.12610.13.200.127
3510.13.200.128/2610.13.200.129 – 10.13.200.19010.13.200.191
3610.13.200.192/2610.13.200.193 – 10.13.200.25410.13.200.255
3710.13.201.0/2610.13.201.1 – 10.13.201.6210.13.201.63
3810.13.201.64/2610.13.201.65 – 10.13.201.12610.13.201.127
3910.13.201.128/2610.13.201.129 – 10.13.201.19010.13.201.191
4010.13.201.192/2610.13.201.193 – 10.13.201.25410.13.201.255
4110.13.202.0/2610.13.202.1 – 10.13.202.6210.13.202.63
4210.13.202.64/2610.13.202.65 – 10.13.202.12610.13.202.127
4310.13.202.128/2610.13.202.129 – 10.13.202.19010.13.202.191
4410.13.202.192/2610.13.202.193 – 10.13.202.25410.13.202.255
4510.13.203.0/2610.13.203.1 – 10.13.203.6210.13.203.63
4610.13.203.64/2610.13.203.65 – 10.13.203.12610.13.203.127
4710.13.203.128/2610.13.203.129 – 10.13.203.19010.13.203.191
4810.13.203.192/2610.13.203.193 – 10.13.203.25410.13.203.255
4910.13.204.0/2610.13.204.1 – 10.13.204.6210.13.204.63
5010.13.204.64/2610.13.204.65 – 10.13.204.12610.13.204.127
5110.13.204.128/2610.13.204.129 – 10.13.204.19010.13.204.191
5210.13.204.192/2610.13.204.193 – 10.13.204.25410.13.204.255
5310.13.205.0/2610.13.205.1 – 10.13.205.6210.13.205.63
5410.13.205.64/2610.13.205.65 – 10.13.205.12610.13.205.127
5510.13.205.128/2610.13.205.129 – 10.13.205.19010.13.205.191
5610.13.205.192/2610.13.205.193 – 10.13.205.25410.13.205.255
5710.13.206.0/2610.13.206.1 – 10.13.206.6210.13.206.63
5810.13.206.64/2610.13.206.65 – 10.13.206.12610.13.206.127
5910.13.206.128/2610.13.206.129 – 10.13.206.19010.13.206.191
6010.13.206.192/2610.13.206.193 – 10.13.206.25410.13.206.255
6110.13.207.0/2610.13.207.1 – 10.13.207.6210.13.207.63
6210.13.207.64/2610.13.207.65 – 10.13.207.12610.13.207.127
6310.13.207.128/2610.13.207.129 – 10.13.207.19010.13.207.191
6410.13.207.192/2610.13.207.193 – 10.13.207.25410.13.207.255
6510.13.208.0/2610.13.208.1 – 10.13.208.6210.13.208.63
6610.13.208.64/2610.13.208.65 – 10.13.208.12610.13.208.127
6710.13.208.128/2610.13.208.129 – 10.13.208.19010.13.208.191
6810.13.208.192/2610.13.208.193 – 10.13.208.25410.13.208.255
6910.13.209.0/2610.13.209.1 – 10.13.209.6210.13.209.63
7010.13.209.64/2610.13.209.65 – 10.13.209.12610.13.209.127
7110.13.209.128/2610.13.209.129 – 10.13.209.19010.13.209.191
7210.13.209.192/2610.13.209.193 – 10.13.209.25410.13.209.255
7310.13.210.0/2610.13.210.1 – 10.13.210.6210.13.210.63
7410.13.210.64/2610.13.210.65 – 10.13.210.12610.13.210.127
7510.13.210.128/2610.13.210.129 – 10.13.210.19010.13.210.191
7610.13.210.192/2610.13.210.193 – 10.13.210.25410.13.210.255
7710.13.211.0/2610.13.211.1 – 10.13.211.6210.13.211.63
7810.13.211.64/2610.13.211.65 – 10.13.211.12610.13.211.127
7910.13.211.128/2610.13.211.129 – 10.13.211.19010.13.211.191
8010.13.211.192/2610.13.211.193 – 10.13.211.25410.13.211.255
8110.13.212.0/2610.13.212.1 – 10.13.212.6210.13.212.63
8210.13.212.64/2610.13.212.65 – 10.13.212.12610.13.212.127
8310.13.212.128/2610.13.212.129 – 10.13.212.19010.13.212.191
8410.13.212.192/2610.13.212.193 – 10.13.212.25410.13.212.255
8510.13.213.0/2610.13.213.1 – 10.13.213.6210.13.213.63
8610.13.213.64/2610.13.213.65 – 10.13.213.12610.13.213.127
8710.13.213.128/2610.13.213.129 – 10.13.213.19010.13.213.191
8810.13.213.192/2610.13.213.193 – 10.13.213.25410.13.213.255
8910.13.214.0/2610.13.214.1 – 10.13.214.6210.13.214.63
9010.13.214.64/2610.13.214.65 – 10.13.214.12610.13.214.127
9110.13.214.128/2610.13.214.129 – 10.13.214.19010.13.214.191
9210.13.214.192/2610.13.214.193 – 10.13.214.25410.13.214.255
9310.13.215.0/2610.13.215.1 – 10.13.215.6210.13.215.63
9410.13.215.64/2610.13.215.65 – 10.13.215.12610.13.215.127
9510.13.215.128/2610.13.215.129 – 10.13.215.19010.13.215.191
9610.13.215.192/2610.13.215.193 – 10.13.215.25410.13.215.255
9710.13.216.0/2610.13.216.1 – 10.13.216.6210.13.216.63
9810.13.216.64/2610.13.216.65 – 10.13.216.12610.13.216.127
9910.13.216.128/2610.13.216.129 – 10.13.216.19010.13.216.191
10010.13.216.192/2610.13.216.193 – 10.13.216.25410.13.216.255
10110.13.217.0/2610.13.217.1 – 10.13.217.6210.13.217.63
10210.13.217.64/2610.13.217.65 – 10.13.217.12610.13.217.127
10310.13.217.128/2610.13.217.129 – 10.13.217.19010.13.217.191
10410.13.217.192/2610.13.217.193 – 10.13.217.25410.13.217.255
10510.13.218.0/2610.13.218.1 – 10.13.218.6210.13.218.63
10610.13.218.64/2610.13.218.65 – 10.13.218.12610.13.218.127
10710.13.218.128/2610.13.218.129 – 10.13.218.19010.13.218.191
10810.13.218.192/2610.13.218.193 – 10.13.218.25410.13.218.255
10910.13.219.0/2610.13.219.1 – 10.13.219.6210.13.219.63
11010.13.219.64/2610.13.219.65 – 10.13.219.12610.13.219.127
11110.13.219.128/2610.13.219.129 – 10.13.219.19010.13.219.191
11210.13.219.192/2610.13.219.193 – 10.13.219.25410.13.219.255
11310.13.220.0/2610.13.220.1 – 10.13.220.6210.13.220.63
11410.13.220.64/2610.13.220.65 – 10.13.220.12610.13.220.127
11510.13.220.128/2610.13.220.129 – 10.13.220.19010.13.220.191
11610.13.220.192/2610.13.220.193 – 10.13.220.25410.13.220.255
11710.13.221.0/2610.13.221.1 – 10.13.221.6210.13.221.63
11810.13.221.64/2610.13.221.65 – 10.13.221.12610.13.221.127
11910.13.221.128/2610.13.221.129 – 10.13.221.19010.13.221.191
12010.13.221.192/2610.13.221.193 – 10.13.221.25410.13.221.255
12110.13.222.0/2610.13.222.1 – 10.13.222.6210.13.222.63
12210.13.222.64/2610.13.222.65 – 10.13.222.12610.13.222.127
12310.13.222.128/2610.13.222.129 – 10.13.222.19010.13.222.191
12410.13.222.192/2610.13.222.193 – 10.13.222.25410.13.222.255
12510.13.223.0/2610.13.223.1 – 10.13.223.6210.13.223.63
12610.13.223.64/2610.13.223.65 – 10.13.223.12610.13.223.127
12710.13.223.128/2610.13.223.129 – 10.13.223.19010.13.223.191
12810.13.223.192/2610.13.223.193 – 10.13.223.25410.13.223.255
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 →