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)10.19.32.0/19
network10.19.32.0/19
broadcast10.19.63.255
first host10.19.32.1
last host10.19.63.254
subnet mask255.255.224.0
wildcard0.0.31.255
addresses8,192
usable hosts8,190
classA
ipcalc 10.19.32.0/19
address00001010.00010011.00100000.00000000
subnet mask11111111.11111111.11100000.00000000
network00001010.00010011.00100000.00000000
broadcast00001010.00010011.00111111.11111111
green = network part, grey = host part
hex0x0a132000
decimal169025536
reverse dns0.32.19.10.in-addr.arpa
ipv4-mapped::ffff:a13:2000

/19 split into /26 · 128 subnets

close ×
#networkhost rangebroadcast
110.19.32.0/2610.19.32.1 – 10.19.32.6210.19.32.63
210.19.32.64/2610.19.32.65 – 10.19.32.12610.19.32.127
310.19.32.128/2610.19.32.129 – 10.19.32.19010.19.32.191
410.19.32.192/2610.19.32.193 – 10.19.32.25410.19.32.255
510.19.33.0/2610.19.33.1 – 10.19.33.6210.19.33.63
610.19.33.64/2610.19.33.65 – 10.19.33.12610.19.33.127
710.19.33.128/2610.19.33.129 – 10.19.33.19010.19.33.191
810.19.33.192/2610.19.33.193 – 10.19.33.25410.19.33.255
910.19.34.0/2610.19.34.1 – 10.19.34.6210.19.34.63
1010.19.34.64/2610.19.34.65 – 10.19.34.12610.19.34.127
1110.19.34.128/2610.19.34.129 – 10.19.34.19010.19.34.191
1210.19.34.192/2610.19.34.193 – 10.19.34.25410.19.34.255
1310.19.35.0/2610.19.35.1 – 10.19.35.6210.19.35.63
1410.19.35.64/2610.19.35.65 – 10.19.35.12610.19.35.127
1510.19.35.128/2610.19.35.129 – 10.19.35.19010.19.35.191
1610.19.35.192/2610.19.35.193 – 10.19.35.25410.19.35.255
1710.19.36.0/2610.19.36.1 – 10.19.36.6210.19.36.63
1810.19.36.64/2610.19.36.65 – 10.19.36.12610.19.36.127
1910.19.36.128/2610.19.36.129 – 10.19.36.19010.19.36.191
2010.19.36.192/2610.19.36.193 – 10.19.36.25410.19.36.255
2110.19.37.0/2610.19.37.1 – 10.19.37.6210.19.37.63
2210.19.37.64/2610.19.37.65 – 10.19.37.12610.19.37.127
2310.19.37.128/2610.19.37.129 – 10.19.37.19010.19.37.191
2410.19.37.192/2610.19.37.193 – 10.19.37.25410.19.37.255
2510.19.38.0/2610.19.38.1 – 10.19.38.6210.19.38.63
2610.19.38.64/2610.19.38.65 – 10.19.38.12610.19.38.127
2710.19.38.128/2610.19.38.129 – 10.19.38.19010.19.38.191
2810.19.38.192/2610.19.38.193 – 10.19.38.25410.19.38.255
2910.19.39.0/2610.19.39.1 – 10.19.39.6210.19.39.63
3010.19.39.64/2610.19.39.65 – 10.19.39.12610.19.39.127
3110.19.39.128/2610.19.39.129 – 10.19.39.19010.19.39.191
3210.19.39.192/2610.19.39.193 – 10.19.39.25410.19.39.255
3310.19.40.0/2610.19.40.1 – 10.19.40.6210.19.40.63
3410.19.40.64/2610.19.40.65 – 10.19.40.12610.19.40.127
3510.19.40.128/2610.19.40.129 – 10.19.40.19010.19.40.191
3610.19.40.192/2610.19.40.193 – 10.19.40.25410.19.40.255
3710.19.41.0/2610.19.41.1 – 10.19.41.6210.19.41.63
3810.19.41.64/2610.19.41.65 – 10.19.41.12610.19.41.127
3910.19.41.128/2610.19.41.129 – 10.19.41.19010.19.41.191
4010.19.41.192/2610.19.41.193 – 10.19.41.25410.19.41.255
4110.19.42.0/2610.19.42.1 – 10.19.42.6210.19.42.63
4210.19.42.64/2610.19.42.65 – 10.19.42.12610.19.42.127
4310.19.42.128/2610.19.42.129 – 10.19.42.19010.19.42.191
4410.19.42.192/2610.19.42.193 – 10.19.42.25410.19.42.255
4510.19.43.0/2610.19.43.1 – 10.19.43.6210.19.43.63
4610.19.43.64/2610.19.43.65 – 10.19.43.12610.19.43.127
4710.19.43.128/2610.19.43.129 – 10.19.43.19010.19.43.191
4810.19.43.192/2610.19.43.193 – 10.19.43.25410.19.43.255
4910.19.44.0/2610.19.44.1 – 10.19.44.6210.19.44.63
5010.19.44.64/2610.19.44.65 – 10.19.44.12610.19.44.127
5110.19.44.128/2610.19.44.129 – 10.19.44.19010.19.44.191
5210.19.44.192/2610.19.44.193 – 10.19.44.25410.19.44.255
5310.19.45.0/2610.19.45.1 – 10.19.45.6210.19.45.63
5410.19.45.64/2610.19.45.65 – 10.19.45.12610.19.45.127
5510.19.45.128/2610.19.45.129 – 10.19.45.19010.19.45.191
5610.19.45.192/2610.19.45.193 – 10.19.45.25410.19.45.255
5710.19.46.0/2610.19.46.1 – 10.19.46.6210.19.46.63
5810.19.46.64/2610.19.46.65 – 10.19.46.12610.19.46.127
5910.19.46.128/2610.19.46.129 – 10.19.46.19010.19.46.191
6010.19.46.192/2610.19.46.193 – 10.19.46.25410.19.46.255
6110.19.47.0/2610.19.47.1 – 10.19.47.6210.19.47.63
6210.19.47.64/2610.19.47.65 – 10.19.47.12610.19.47.127
6310.19.47.128/2610.19.47.129 – 10.19.47.19010.19.47.191
6410.19.47.192/2610.19.47.193 – 10.19.47.25410.19.47.255
6510.19.48.0/2610.19.48.1 – 10.19.48.6210.19.48.63
6610.19.48.64/2610.19.48.65 – 10.19.48.12610.19.48.127
6710.19.48.128/2610.19.48.129 – 10.19.48.19010.19.48.191
6810.19.48.192/2610.19.48.193 – 10.19.48.25410.19.48.255
6910.19.49.0/2610.19.49.1 – 10.19.49.6210.19.49.63
7010.19.49.64/2610.19.49.65 – 10.19.49.12610.19.49.127
7110.19.49.128/2610.19.49.129 – 10.19.49.19010.19.49.191
7210.19.49.192/2610.19.49.193 – 10.19.49.25410.19.49.255
7310.19.50.0/2610.19.50.1 – 10.19.50.6210.19.50.63
7410.19.50.64/2610.19.50.65 – 10.19.50.12610.19.50.127
7510.19.50.128/2610.19.50.129 – 10.19.50.19010.19.50.191
7610.19.50.192/2610.19.50.193 – 10.19.50.25410.19.50.255
7710.19.51.0/2610.19.51.1 – 10.19.51.6210.19.51.63
7810.19.51.64/2610.19.51.65 – 10.19.51.12610.19.51.127
7910.19.51.128/2610.19.51.129 – 10.19.51.19010.19.51.191
8010.19.51.192/2610.19.51.193 – 10.19.51.25410.19.51.255
8110.19.52.0/2610.19.52.1 – 10.19.52.6210.19.52.63
8210.19.52.64/2610.19.52.65 – 10.19.52.12610.19.52.127
8310.19.52.128/2610.19.52.129 – 10.19.52.19010.19.52.191
8410.19.52.192/2610.19.52.193 – 10.19.52.25410.19.52.255
8510.19.53.0/2610.19.53.1 – 10.19.53.6210.19.53.63
8610.19.53.64/2610.19.53.65 – 10.19.53.12610.19.53.127
8710.19.53.128/2610.19.53.129 – 10.19.53.19010.19.53.191
8810.19.53.192/2610.19.53.193 – 10.19.53.25410.19.53.255
8910.19.54.0/2610.19.54.1 – 10.19.54.6210.19.54.63
9010.19.54.64/2610.19.54.65 – 10.19.54.12610.19.54.127
9110.19.54.128/2610.19.54.129 – 10.19.54.19010.19.54.191
9210.19.54.192/2610.19.54.193 – 10.19.54.25410.19.54.255
9310.19.55.0/2610.19.55.1 – 10.19.55.6210.19.55.63
9410.19.55.64/2610.19.55.65 – 10.19.55.12610.19.55.127
9510.19.55.128/2610.19.55.129 – 10.19.55.19010.19.55.191
9610.19.55.192/2610.19.55.193 – 10.19.55.25410.19.55.255
9710.19.56.0/2610.19.56.1 – 10.19.56.6210.19.56.63
9810.19.56.64/2610.19.56.65 – 10.19.56.12610.19.56.127
9910.19.56.128/2610.19.56.129 – 10.19.56.19010.19.56.191
10010.19.56.192/2610.19.56.193 – 10.19.56.25410.19.56.255
10110.19.57.0/2610.19.57.1 – 10.19.57.6210.19.57.63
10210.19.57.64/2610.19.57.65 – 10.19.57.12610.19.57.127
10310.19.57.128/2610.19.57.129 – 10.19.57.19010.19.57.191
10410.19.57.192/2610.19.57.193 – 10.19.57.25410.19.57.255
10510.19.58.0/2610.19.58.1 – 10.19.58.6210.19.58.63
10610.19.58.64/2610.19.58.65 – 10.19.58.12610.19.58.127
10710.19.58.128/2610.19.58.129 – 10.19.58.19010.19.58.191
10810.19.58.192/2610.19.58.193 – 10.19.58.25410.19.58.255
10910.19.59.0/2610.19.59.1 – 10.19.59.6210.19.59.63
11010.19.59.64/2610.19.59.65 – 10.19.59.12610.19.59.127
11110.19.59.128/2610.19.59.129 – 10.19.59.19010.19.59.191
11210.19.59.192/2610.19.59.193 – 10.19.59.25410.19.59.255
11310.19.60.0/2610.19.60.1 – 10.19.60.6210.19.60.63
11410.19.60.64/2610.19.60.65 – 10.19.60.12610.19.60.127
11510.19.60.128/2610.19.60.129 – 10.19.60.19010.19.60.191
11610.19.60.192/2610.19.60.193 – 10.19.60.25410.19.60.255
11710.19.61.0/2610.19.61.1 – 10.19.61.6210.19.61.63
11810.19.61.64/2610.19.61.65 – 10.19.61.12610.19.61.127
11910.19.61.128/2610.19.61.129 – 10.19.61.19010.19.61.191
12010.19.61.192/2610.19.61.193 – 10.19.61.25410.19.61.255
12110.19.62.0/2610.19.62.1 – 10.19.62.6210.19.62.63
12210.19.62.64/2610.19.62.65 – 10.19.62.12610.19.62.127
12310.19.62.128/2610.19.62.129 – 10.19.62.19010.19.62.191
12410.19.62.192/2610.19.62.193 – 10.19.62.25410.19.62.255
12510.19.63.0/2610.19.63.1 – 10.19.63.6210.19.63.63
12610.19.63.64/2610.19.63.65 – 10.19.63.12610.19.63.127
12710.19.63.128/2610.19.63.129 – 10.19.63.19010.19.63.191
12810.19.63.192/2610.19.63.193 – 10.19.63.25410.19.63.255
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 →