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)10.192.0.0/13
network10.192.0.0/13
broadcast10.199.255.255
first host10.192.0.1
last host10.199.255.254
subnet mask255.248.0.0
wildcard0.7.255.255
addresses524,288
usable hosts524,286
classA
ipcalc 10.192.0.0/13
address00001010.11000000.00000000.00000000
subnet mask11111111.11111000.00000000.00000000
network00001010.11000000.00000000.00000000
broadcast00001010.11000111.11111111.11111111
green = network part, grey = host part
hex0x0ac00000
decimal180355072
reverse dns0.0.192.10.in-addr.arpa
ipv4-mapped::ffff:ac0:0

/13 split into /19 · 64 subnets

close ×
#networkhost rangebroadcast
110.192.0.0/1910.192.0.1 – 10.192.31.25410.192.31.255
210.192.32.0/1910.192.32.1 – 10.192.63.25410.192.63.255
310.192.64.0/1910.192.64.1 – 10.192.95.25410.192.95.255
410.192.96.0/1910.192.96.1 – 10.192.127.25410.192.127.255
510.192.128.0/1910.192.128.1 – 10.192.159.25410.192.159.255
610.192.160.0/1910.192.160.1 – 10.192.191.25410.192.191.255
710.192.192.0/1910.192.192.1 – 10.192.223.25410.192.223.255
810.192.224.0/1910.192.224.1 – 10.192.255.25410.192.255.255
910.193.0.0/1910.193.0.1 – 10.193.31.25410.193.31.255
1010.193.32.0/1910.193.32.1 – 10.193.63.25410.193.63.255
1110.193.64.0/1910.193.64.1 – 10.193.95.25410.193.95.255
1210.193.96.0/1910.193.96.1 – 10.193.127.25410.193.127.255
1310.193.128.0/1910.193.128.1 – 10.193.159.25410.193.159.255
1410.193.160.0/1910.193.160.1 – 10.193.191.25410.193.191.255
1510.193.192.0/1910.193.192.1 – 10.193.223.25410.193.223.255
1610.193.224.0/1910.193.224.1 – 10.193.255.25410.193.255.255
1710.194.0.0/1910.194.0.1 – 10.194.31.25410.194.31.255
1810.194.32.0/1910.194.32.1 – 10.194.63.25410.194.63.255
1910.194.64.0/1910.194.64.1 – 10.194.95.25410.194.95.255
2010.194.96.0/1910.194.96.1 – 10.194.127.25410.194.127.255
2110.194.128.0/1910.194.128.1 – 10.194.159.25410.194.159.255
2210.194.160.0/1910.194.160.1 – 10.194.191.25410.194.191.255
2310.194.192.0/1910.194.192.1 – 10.194.223.25410.194.223.255
2410.194.224.0/1910.194.224.1 – 10.194.255.25410.194.255.255
2510.195.0.0/1910.195.0.1 – 10.195.31.25410.195.31.255
2610.195.32.0/1910.195.32.1 – 10.195.63.25410.195.63.255
2710.195.64.0/1910.195.64.1 – 10.195.95.25410.195.95.255
2810.195.96.0/1910.195.96.1 – 10.195.127.25410.195.127.255
2910.195.128.0/1910.195.128.1 – 10.195.159.25410.195.159.255
3010.195.160.0/1910.195.160.1 – 10.195.191.25410.195.191.255
3110.195.192.0/1910.195.192.1 – 10.195.223.25410.195.223.255
3210.195.224.0/1910.195.224.1 – 10.195.255.25410.195.255.255
3310.196.0.0/1910.196.0.1 – 10.196.31.25410.196.31.255
3410.196.32.0/1910.196.32.1 – 10.196.63.25410.196.63.255
3510.196.64.0/1910.196.64.1 – 10.196.95.25410.196.95.255
3610.196.96.0/1910.196.96.1 – 10.196.127.25410.196.127.255
3710.196.128.0/1910.196.128.1 – 10.196.159.25410.196.159.255
3810.196.160.0/1910.196.160.1 – 10.196.191.25410.196.191.255
3910.196.192.0/1910.196.192.1 – 10.196.223.25410.196.223.255
4010.196.224.0/1910.196.224.1 – 10.196.255.25410.196.255.255
4110.197.0.0/1910.197.0.1 – 10.197.31.25410.197.31.255
4210.197.32.0/1910.197.32.1 – 10.197.63.25410.197.63.255
4310.197.64.0/1910.197.64.1 – 10.197.95.25410.197.95.255
4410.197.96.0/1910.197.96.1 – 10.197.127.25410.197.127.255
4510.197.128.0/1910.197.128.1 – 10.197.159.25410.197.159.255
4610.197.160.0/1910.197.160.1 – 10.197.191.25410.197.191.255
4710.197.192.0/1910.197.192.1 – 10.197.223.25410.197.223.255
4810.197.224.0/1910.197.224.1 – 10.197.255.25410.197.255.255
4910.198.0.0/1910.198.0.1 – 10.198.31.25410.198.31.255
5010.198.32.0/1910.198.32.1 – 10.198.63.25410.198.63.255
5110.198.64.0/1910.198.64.1 – 10.198.95.25410.198.95.255
5210.198.96.0/1910.198.96.1 – 10.198.127.25410.198.127.255
5310.198.128.0/1910.198.128.1 – 10.198.159.25410.198.159.255
5410.198.160.0/1910.198.160.1 – 10.198.191.25410.198.191.255
5510.198.192.0/1910.198.192.1 – 10.198.223.25410.198.223.255
5610.198.224.0/1910.198.224.1 – 10.198.255.25410.198.255.255
5710.199.0.0/1910.199.0.1 – 10.199.31.25410.199.31.255
5810.199.32.0/1910.199.32.1 – 10.199.63.25410.199.63.255
5910.199.64.0/1910.199.64.1 – 10.199.95.25410.199.95.255
6010.199.96.0/1910.199.96.1 – 10.199.127.25410.199.127.255
6110.199.128.0/1910.199.128.1 – 10.199.159.25410.199.159.255
6210.199.160.0/1910.199.160.1 – 10.199.191.25410.199.191.255
6310.199.192.0/1910.199.192.1 – 10.199.223.25410.199.223.255
6410.199.224.0/1910.199.224.1 – 10.199.255.25410.199.255.255
01 / table

IPv4 CIDR prefix table.

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

prefixsubnet maskaddresseshostsin your /13
/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-
/13255.248.0.0524,288524,2861
/14255.252.0.0262,144262,1422 split →
/15255.254.0.0131,072131,0704 split →
/16255.255.0.065,53665,5348 split →
/17255.255.128.032,76832,76616 split →
/18255.255.192.016,38416,38232 split →
/19255.255.224.08,1928,19064 split →
/20255.255.240.04,0964,094128 split →
/21255.255.248.02,0482,046256 split →
/22255.255.252.01,0241,022512 split →
/23255.255.254.05125101,024 split →
/24255.255.255.02562542,048 split →
/25255.255.255.1281281264,096 split →
/26255.255.255.19264628,192 split →
/27255.255.255.224323016,384 split →
/28255.255.255.240161432,768 split →
/29255.255.255.2488665,536 split →
/30255.255.255.25242131,072 split →
/31255.255.255.25422262,144 split →
/32255.255.255.25511524,288 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 →