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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)10.96.0.0/13
network10.96.0.0/13
broadcast10.103.255.255
first host10.96.0.1
last host10.103.255.254
subnet mask255.248.0.0
wildcard0.7.255.255
addresses524,288
usable hosts524,286
classA
ipcalc 10.96.0.0/13
address00001010.01100000.00000000.00000000
subnet mask11111111.11111000.00000000.00000000
network00001010.01100000.00000000.00000000
broadcast00001010.01100111.11111111.11111111
green = network part, grey = host part
hex0x0a600000
decimal174063616
reverse dns0.0.96.10.in-addr.arpa
ipv4-mapped::ffff:a60:0

/13 split into /19 · 64 subnets

close ×
#networkhost rangebroadcast
110.96.0.0/1910.96.0.1 – 10.96.31.25410.96.31.255
210.96.32.0/1910.96.32.1 – 10.96.63.25410.96.63.255
310.96.64.0/1910.96.64.1 – 10.96.95.25410.96.95.255
410.96.96.0/1910.96.96.1 – 10.96.127.25410.96.127.255
510.96.128.0/1910.96.128.1 – 10.96.159.25410.96.159.255
610.96.160.0/1910.96.160.1 – 10.96.191.25410.96.191.255
710.96.192.0/1910.96.192.1 – 10.96.223.25410.96.223.255
810.96.224.0/1910.96.224.1 – 10.96.255.25410.96.255.255
910.97.0.0/1910.97.0.1 – 10.97.31.25410.97.31.255
1010.97.32.0/1910.97.32.1 – 10.97.63.25410.97.63.255
1110.97.64.0/1910.97.64.1 – 10.97.95.25410.97.95.255
1210.97.96.0/1910.97.96.1 – 10.97.127.25410.97.127.255
1310.97.128.0/1910.97.128.1 – 10.97.159.25410.97.159.255
1410.97.160.0/1910.97.160.1 – 10.97.191.25410.97.191.255
1510.97.192.0/1910.97.192.1 – 10.97.223.25410.97.223.255
1610.97.224.0/1910.97.224.1 – 10.97.255.25410.97.255.255
1710.98.0.0/1910.98.0.1 – 10.98.31.25410.98.31.255
1810.98.32.0/1910.98.32.1 – 10.98.63.25410.98.63.255
1910.98.64.0/1910.98.64.1 – 10.98.95.25410.98.95.255
2010.98.96.0/1910.98.96.1 – 10.98.127.25410.98.127.255
2110.98.128.0/1910.98.128.1 – 10.98.159.25410.98.159.255
2210.98.160.0/1910.98.160.1 – 10.98.191.25410.98.191.255
2310.98.192.0/1910.98.192.1 – 10.98.223.25410.98.223.255
2410.98.224.0/1910.98.224.1 – 10.98.255.25410.98.255.255
2510.99.0.0/1910.99.0.1 – 10.99.31.25410.99.31.255
2610.99.32.0/1910.99.32.1 – 10.99.63.25410.99.63.255
2710.99.64.0/1910.99.64.1 – 10.99.95.25410.99.95.255
2810.99.96.0/1910.99.96.1 – 10.99.127.25410.99.127.255
2910.99.128.0/1910.99.128.1 – 10.99.159.25410.99.159.255
3010.99.160.0/1910.99.160.1 – 10.99.191.25410.99.191.255
3110.99.192.0/1910.99.192.1 – 10.99.223.25410.99.223.255
3210.99.224.0/1910.99.224.1 – 10.99.255.25410.99.255.255
3310.100.0.0/1910.100.0.1 – 10.100.31.25410.100.31.255
3410.100.32.0/1910.100.32.1 – 10.100.63.25410.100.63.255
3510.100.64.0/1910.100.64.1 – 10.100.95.25410.100.95.255
3610.100.96.0/1910.100.96.1 – 10.100.127.25410.100.127.255
3710.100.128.0/1910.100.128.1 – 10.100.159.25410.100.159.255
3810.100.160.0/1910.100.160.1 – 10.100.191.25410.100.191.255
3910.100.192.0/1910.100.192.1 – 10.100.223.25410.100.223.255
4010.100.224.0/1910.100.224.1 – 10.100.255.25410.100.255.255
4110.101.0.0/1910.101.0.1 – 10.101.31.25410.101.31.255
4210.101.32.0/1910.101.32.1 – 10.101.63.25410.101.63.255
4310.101.64.0/1910.101.64.1 – 10.101.95.25410.101.95.255
4410.101.96.0/1910.101.96.1 – 10.101.127.25410.101.127.255
4510.101.128.0/1910.101.128.1 – 10.101.159.25410.101.159.255
4610.101.160.0/1910.101.160.1 – 10.101.191.25410.101.191.255
4710.101.192.0/1910.101.192.1 – 10.101.223.25410.101.223.255
4810.101.224.0/1910.101.224.1 – 10.101.255.25410.101.255.255
4910.102.0.0/1910.102.0.1 – 10.102.31.25410.102.31.255
5010.102.32.0/1910.102.32.1 – 10.102.63.25410.102.63.255
5110.102.64.0/1910.102.64.1 – 10.102.95.25410.102.95.255
5210.102.96.0/1910.102.96.1 – 10.102.127.25410.102.127.255
5310.102.128.0/1910.102.128.1 – 10.102.159.25410.102.159.255
5410.102.160.0/1910.102.160.1 – 10.102.191.25410.102.191.255
5510.102.192.0/1910.102.192.1 – 10.102.223.25410.102.223.255
5610.102.224.0/1910.102.224.1 – 10.102.255.25410.102.255.255
5710.103.0.0/1910.103.0.1 – 10.103.31.25410.103.31.255
5810.103.32.0/1910.103.32.1 – 10.103.63.25410.103.63.255
5910.103.64.0/1910.103.64.1 – 10.103.95.25410.103.95.255
6010.103.96.0/1910.103.96.1 – 10.103.127.25410.103.127.255
6110.103.128.0/1910.103.128.1 – 10.103.159.25410.103.159.255
6210.103.160.0/1910.103.160.1 – 10.103.191.25410.103.191.255
6310.103.192.0/1910.103.192.1 – 10.103.223.25410.103.223.255
6410.103.224.0/1910.103.224.1 – 10.103.255.25410.103.255.255
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 →