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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)10.4.0.0/14
network10.4.0.0/14
broadcast10.7.255.255
first host10.4.0.1
last host10.7.255.254
subnet mask255.252.0.0
wildcard0.3.255.255
addresses262,144
usable hosts262,142
classA
ipcalc 10.4.0.0/14
address00001010.00000100.00000000.00000000
subnet mask11111111.11111100.00000000.00000000
network00001010.00000100.00000000.00000000
broadcast00001010.00000111.11111111.11111111
green = network part, grey = host part
hex0x0a040000
decimal168034304
reverse dns0.0.4.10.in-addr.arpa
ipv4-mapped::ffff:a04:0

/14 split into /20 · 64 subnets

close ×
#networkhost rangebroadcast
110.4.0.0/2010.4.0.1 – 10.4.15.25410.4.15.255
210.4.16.0/2010.4.16.1 – 10.4.31.25410.4.31.255
310.4.32.0/2010.4.32.1 – 10.4.47.25410.4.47.255
410.4.48.0/2010.4.48.1 – 10.4.63.25410.4.63.255
510.4.64.0/2010.4.64.1 – 10.4.79.25410.4.79.255
610.4.80.0/2010.4.80.1 – 10.4.95.25410.4.95.255
710.4.96.0/2010.4.96.1 – 10.4.111.25410.4.111.255
810.4.112.0/2010.4.112.1 – 10.4.127.25410.4.127.255
910.4.128.0/2010.4.128.1 – 10.4.143.25410.4.143.255
1010.4.144.0/2010.4.144.1 – 10.4.159.25410.4.159.255
1110.4.160.0/2010.4.160.1 – 10.4.175.25410.4.175.255
1210.4.176.0/2010.4.176.1 – 10.4.191.25410.4.191.255
1310.4.192.0/2010.4.192.1 – 10.4.207.25410.4.207.255
1410.4.208.0/2010.4.208.1 – 10.4.223.25410.4.223.255
1510.4.224.0/2010.4.224.1 – 10.4.239.25410.4.239.255
1610.4.240.0/2010.4.240.1 – 10.4.255.25410.4.255.255
1710.5.0.0/2010.5.0.1 – 10.5.15.25410.5.15.255
1810.5.16.0/2010.5.16.1 – 10.5.31.25410.5.31.255
1910.5.32.0/2010.5.32.1 – 10.5.47.25410.5.47.255
2010.5.48.0/2010.5.48.1 – 10.5.63.25410.5.63.255
2110.5.64.0/2010.5.64.1 – 10.5.79.25410.5.79.255
2210.5.80.0/2010.5.80.1 – 10.5.95.25410.5.95.255
2310.5.96.0/2010.5.96.1 – 10.5.111.25410.5.111.255
2410.5.112.0/2010.5.112.1 – 10.5.127.25410.5.127.255
2510.5.128.0/2010.5.128.1 – 10.5.143.25410.5.143.255
2610.5.144.0/2010.5.144.1 – 10.5.159.25410.5.159.255
2710.5.160.0/2010.5.160.1 – 10.5.175.25410.5.175.255
2810.5.176.0/2010.5.176.1 – 10.5.191.25410.5.191.255
2910.5.192.0/2010.5.192.1 – 10.5.207.25410.5.207.255
3010.5.208.0/2010.5.208.1 – 10.5.223.25410.5.223.255
3110.5.224.0/2010.5.224.1 – 10.5.239.25410.5.239.255
3210.5.240.0/2010.5.240.1 – 10.5.255.25410.5.255.255
3310.6.0.0/2010.6.0.1 – 10.6.15.25410.6.15.255
3410.6.16.0/2010.6.16.1 – 10.6.31.25410.6.31.255
3510.6.32.0/2010.6.32.1 – 10.6.47.25410.6.47.255
3610.6.48.0/2010.6.48.1 – 10.6.63.25410.6.63.255
3710.6.64.0/2010.6.64.1 – 10.6.79.25410.6.79.255
3810.6.80.0/2010.6.80.1 – 10.6.95.25410.6.95.255
3910.6.96.0/2010.6.96.1 – 10.6.111.25410.6.111.255
4010.6.112.0/2010.6.112.1 – 10.6.127.25410.6.127.255
4110.6.128.0/2010.6.128.1 – 10.6.143.25410.6.143.255
4210.6.144.0/2010.6.144.1 – 10.6.159.25410.6.159.255
4310.6.160.0/2010.6.160.1 – 10.6.175.25410.6.175.255
4410.6.176.0/2010.6.176.1 – 10.6.191.25410.6.191.255
4510.6.192.0/2010.6.192.1 – 10.6.207.25410.6.207.255
4610.6.208.0/2010.6.208.1 – 10.6.223.25410.6.223.255
4710.6.224.0/2010.6.224.1 – 10.6.239.25410.6.239.255
4810.6.240.0/2010.6.240.1 – 10.6.255.25410.6.255.255
4910.7.0.0/2010.7.0.1 – 10.7.15.25410.7.15.255
5010.7.16.0/2010.7.16.1 – 10.7.31.25410.7.31.255
5110.7.32.0/2010.7.32.1 – 10.7.47.25410.7.47.255
5210.7.48.0/2010.7.48.1 – 10.7.63.25410.7.63.255
5310.7.64.0/2010.7.64.1 – 10.7.79.25410.7.79.255
5410.7.80.0/2010.7.80.1 – 10.7.95.25410.7.95.255
5510.7.96.0/2010.7.96.1 – 10.7.111.25410.7.111.255
5610.7.112.0/2010.7.112.1 – 10.7.127.25410.7.127.255
5710.7.128.0/2010.7.128.1 – 10.7.143.25410.7.143.255
5810.7.144.0/2010.7.144.1 – 10.7.159.25410.7.159.255
5910.7.160.0/2010.7.160.1 – 10.7.175.25410.7.175.255
6010.7.176.0/2010.7.176.1 – 10.7.191.25410.7.191.255
6110.7.192.0/2010.7.192.1 – 10.7.207.25410.7.207.255
6210.7.208.0/2010.7.208.1 – 10.7.223.25410.7.223.255
6310.7.224.0/2010.7.224.1 – 10.7.239.25410.7.239.255
6410.7.240.0/2010.7.240.1 – 10.7.255.25410.7.255.255
01 / table

IPv4 CIDR prefix table.

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

prefixsubnet maskaddresseshostsin your /14
/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-
/14255.252.0.0262,144262,1421
/15255.254.0.0131,072131,0702 split →
/16255.255.0.065,53665,5344 split →
/17255.255.128.032,76832,7668 split →
/18255.255.192.016,38416,38216 split →
/19255.255.224.08,1928,19032 split →
/20255.255.240.04,0964,09464 split →
/21255.255.248.02,0482,046128 split →
/22255.255.252.01,0241,022256 split →
/23255.255.254.0512510512 split →
/24255.255.255.02562541,024 split →
/25255.255.255.1281281262,048 split →
/26255.255.255.19264624,096 split →
/27255.255.255.22432308,192 split →
/28255.255.255.240161416,384 split →
/29255.255.255.2488632,768 split →
/30255.255.255.2524265,536 split →
/31255.255.255.25422131,072 split →
/32255.255.255.25511262,144 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 →