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)10.152.0.0/13
network10.152.0.0/13
broadcast10.159.255.255
first host10.152.0.1
last host10.159.255.254
subnet mask255.248.0.0
wildcard0.7.255.255
addresses524,288
usable hosts524,286
classA
ipcalc 10.152.0.0/13
address00001010.10011000.00000000.00000000
subnet mask11111111.11111000.00000000.00000000
network00001010.10011000.00000000.00000000
broadcast00001010.10011111.11111111.11111111
green = network part, grey = host part
hex0x0a980000
decimal177733632
reverse dns0.0.152.10.in-addr.arpa
ipv4-mapped::ffff:a98:0

/13 split into /19 · 64 subnets

close ×
#networkhost rangebroadcast
110.152.0.0/1910.152.0.1 – 10.152.31.25410.152.31.255
210.152.32.0/1910.152.32.1 – 10.152.63.25410.152.63.255
310.152.64.0/1910.152.64.1 – 10.152.95.25410.152.95.255
410.152.96.0/1910.152.96.1 – 10.152.127.25410.152.127.255
510.152.128.0/1910.152.128.1 – 10.152.159.25410.152.159.255
610.152.160.0/1910.152.160.1 – 10.152.191.25410.152.191.255
710.152.192.0/1910.152.192.1 – 10.152.223.25410.152.223.255
810.152.224.0/1910.152.224.1 – 10.152.255.25410.152.255.255
910.153.0.0/1910.153.0.1 – 10.153.31.25410.153.31.255
1010.153.32.0/1910.153.32.1 – 10.153.63.25410.153.63.255
1110.153.64.0/1910.153.64.1 – 10.153.95.25410.153.95.255
1210.153.96.0/1910.153.96.1 – 10.153.127.25410.153.127.255
1310.153.128.0/1910.153.128.1 – 10.153.159.25410.153.159.255
1410.153.160.0/1910.153.160.1 – 10.153.191.25410.153.191.255
1510.153.192.0/1910.153.192.1 – 10.153.223.25410.153.223.255
1610.153.224.0/1910.153.224.1 – 10.153.255.25410.153.255.255
1710.154.0.0/1910.154.0.1 – 10.154.31.25410.154.31.255
1810.154.32.0/1910.154.32.1 – 10.154.63.25410.154.63.255
1910.154.64.0/1910.154.64.1 – 10.154.95.25410.154.95.255
2010.154.96.0/1910.154.96.1 – 10.154.127.25410.154.127.255
2110.154.128.0/1910.154.128.1 – 10.154.159.25410.154.159.255
2210.154.160.0/1910.154.160.1 – 10.154.191.25410.154.191.255
2310.154.192.0/1910.154.192.1 – 10.154.223.25410.154.223.255
2410.154.224.0/1910.154.224.1 – 10.154.255.25410.154.255.255
2510.155.0.0/1910.155.0.1 – 10.155.31.25410.155.31.255
2610.155.32.0/1910.155.32.1 – 10.155.63.25410.155.63.255
2710.155.64.0/1910.155.64.1 – 10.155.95.25410.155.95.255
2810.155.96.0/1910.155.96.1 – 10.155.127.25410.155.127.255
2910.155.128.0/1910.155.128.1 – 10.155.159.25410.155.159.255
3010.155.160.0/1910.155.160.1 – 10.155.191.25410.155.191.255
3110.155.192.0/1910.155.192.1 – 10.155.223.25410.155.223.255
3210.155.224.0/1910.155.224.1 – 10.155.255.25410.155.255.255
3310.156.0.0/1910.156.0.1 – 10.156.31.25410.156.31.255
3410.156.32.0/1910.156.32.1 – 10.156.63.25410.156.63.255
3510.156.64.0/1910.156.64.1 – 10.156.95.25410.156.95.255
3610.156.96.0/1910.156.96.1 – 10.156.127.25410.156.127.255
3710.156.128.0/1910.156.128.1 – 10.156.159.25410.156.159.255
3810.156.160.0/1910.156.160.1 – 10.156.191.25410.156.191.255
3910.156.192.0/1910.156.192.1 – 10.156.223.25410.156.223.255
4010.156.224.0/1910.156.224.1 – 10.156.255.25410.156.255.255
4110.157.0.0/1910.157.0.1 – 10.157.31.25410.157.31.255
4210.157.32.0/1910.157.32.1 – 10.157.63.25410.157.63.255
4310.157.64.0/1910.157.64.1 – 10.157.95.25410.157.95.255
4410.157.96.0/1910.157.96.1 – 10.157.127.25410.157.127.255
4510.157.128.0/1910.157.128.1 – 10.157.159.25410.157.159.255
4610.157.160.0/1910.157.160.1 – 10.157.191.25410.157.191.255
4710.157.192.0/1910.157.192.1 – 10.157.223.25410.157.223.255
4810.157.224.0/1910.157.224.1 – 10.157.255.25410.157.255.255
4910.158.0.0/1910.158.0.1 – 10.158.31.25410.158.31.255
5010.158.32.0/1910.158.32.1 – 10.158.63.25410.158.63.255
5110.158.64.0/1910.158.64.1 – 10.158.95.25410.158.95.255
5210.158.96.0/1910.158.96.1 – 10.158.127.25410.158.127.255
5310.158.128.0/1910.158.128.1 – 10.158.159.25410.158.159.255
5410.158.160.0/1910.158.160.1 – 10.158.191.25410.158.191.255
5510.158.192.0/1910.158.192.1 – 10.158.223.25410.158.223.255
5610.158.224.0/1910.158.224.1 – 10.158.255.25410.158.255.255
5710.159.0.0/1910.159.0.1 – 10.159.31.25410.159.31.255
5810.159.32.0/1910.159.32.1 – 10.159.63.25410.159.63.255
5910.159.64.0/1910.159.64.1 – 10.159.95.25410.159.95.255
6010.159.96.0/1910.159.96.1 – 10.159.127.25410.159.127.255
6110.159.128.0/1910.159.128.1 – 10.159.159.25410.159.159.255
6210.159.160.0/1910.159.160.1 – 10.159.191.25410.159.191.255
6310.159.192.0/1910.159.192.1 – 10.159.223.25410.159.223.255
6410.159.224.0/1910.159.224.1 – 10.159.255.25410.159.255.255
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 →