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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)10.248.0.0/14
network10.248.0.0/14
broadcast10.251.255.255
first host10.248.0.1
last host10.251.255.254
subnet mask255.252.0.0
wildcard0.3.255.255
addresses262,144
usable hosts262,142
classA
ipcalc 10.248.0.0/14
address00001010.11111000.00000000.00000000
subnet mask11111111.11111100.00000000.00000000
network00001010.11111000.00000000.00000000
broadcast00001010.11111011.11111111.11111111
green = network part, grey = host part
hex0x0af80000
decimal184025088
reverse dns0.0.248.10.in-addr.arpa
ipv4-mapped::ffff:af8:0

/14 split into /20 · 64 subnets

close ×
#networkhost rangebroadcast
110.248.0.0/2010.248.0.1 – 10.248.15.25410.248.15.255
210.248.16.0/2010.248.16.1 – 10.248.31.25410.248.31.255
310.248.32.0/2010.248.32.1 – 10.248.47.25410.248.47.255
410.248.48.0/2010.248.48.1 – 10.248.63.25410.248.63.255
510.248.64.0/2010.248.64.1 – 10.248.79.25410.248.79.255
610.248.80.0/2010.248.80.1 – 10.248.95.25410.248.95.255
710.248.96.0/2010.248.96.1 – 10.248.111.25410.248.111.255
810.248.112.0/2010.248.112.1 – 10.248.127.25410.248.127.255
910.248.128.0/2010.248.128.1 – 10.248.143.25410.248.143.255
1010.248.144.0/2010.248.144.1 – 10.248.159.25410.248.159.255
1110.248.160.0/2010.248.160.1 – 10.248.175.25410.248.175.255
1210.248.176.0/2010.248.176.1 – 10.248.191.25410.248.191.255
1310.248.192.0/2010.248.192.1 – 10.248.207.25410.248.207.255
1410.248.208.0/2010.248.208.1 – 10.248.223.25410.248.223.255
1510.248.224.0/2010.248.224.1 – 10.248.239.25410.248.239.255
1610.248.240.0/2010.248.240.1 – 10.248.255.25410.248.255.255
1710.249.0.0/2010.249.0.1 – 10.249.15.25410.249.15.255
1810.249.16.0/2010.249.16.1 – 10.249.31.25410.249.31.255
1910.249.32.0/2010.249.32.1 – 10.249.47.25410.249.47.255
2010.249.48.0/2010.249.48.1 – 10.249.63.25410.249.63.255
2110.249.64.0/2010.249.64.1 – 10.249.79.25410.249.79.255
2210.249.80.0/2010.249.80.1 – 10.249.95.25410.249.95.255
2310.249.96.0/2010.249.96.1 – 10.249.111.25410.249.111.255
2410.249.112.0/2010.249.112.1 – 10.249.127.25410.249.127.255
2510.249.128.0/2010.249.128.1 – 10.249.143.25410.249.143.255
2610.249.144.0/2010.249.144.1 – 10.249.159.25410.249.159.255
2710.249.160.0/2010.249.160.1 – 10.249.175.25410.249.175.255
2810.249.176.0/2010.249.176.1 – 10.249.191.25410.249.191.255
2910.249.192.0/2010.249.192.1 – 10.249.207.25410.249.207.255
3010.249.208.0/2010.249.208.1 – 10.249.223.25410.249.223.255
3110.249.224.0/2010.249.224.1 – 10.249.239.25410.249.239.255
3210.249.240.0/2010.249.240.1 – 10.249.255.25410.249.255.255
3310.250.0.0/2010.250.0.1 – 10.250.15.25410.250.15.255
3410.250.16.0/2010.250.16.1 – 10.250.31.25410.250.31.255
3510.250.32.0/2010.250.32.1 – 10.250.47.25410.250.47.255
3610.250.48.0/2010.250.48.1 – 10.250.63.25410.250.63.255
3710.250.64.0/2010.250.64.1 – 10.250.79.25410.250.79.255
3810.250.80.0/2010.250.80.1 – 10.250.95.25410.250.95.255
3910.250.96.0/2010.250.96.1 – 10.250.111.25410.250.111.255
4010.250.112.0/2010.250.112.1 – 10.250.127.25410.250.127.255
4110.250.128.0/2010.250.128.1 – 10.250.143.25410.250.143.255
4210.250.144.0/2010.250.144.1 – 10.250.159.25410.250.159.255
4310.250.160.0/2010.250.160.1 – 10.250.175.25410.250.175.255
4410.250.176.0/2010.250.176.1 – 10.250.191.25410.250.191.255
4510.250.192.0/2010.250.192.1 – 10.250.207.25410.250.207.255
4610.250.208.0/2010.250.208.1 – 10.250.223.25410.250.223.255
4710.250.224.0/2010.250.224.1 – 10.250.239.25410.250.239.255
4810.250.240.0/2010.250.240.1 – 10.250.255.25410.250.255.255
4910.251.0.0/2010.251.0.1 – 10.251.15.25410.251.15.255
5010.251.16.0/2010.251.16.1 – 10.251.31.25410.251.31.255
5110.251.32.0/2010.251.32.1 – 10.251.47.25410.251.47.255
5210.251.48.0/2010.251.48.1 – 10.251.63.25410.251.63.255
5310.251.64.0/2010.251.64.1 – 10.251.79.25410.251.79.255
5410.251.80.0/2010.251.80.1 – 10.251.95.25410.251.95.255
5510.251.96.0/2010.251.96.1 – 10.251.111.25410.251.111.255
5610.251.112.0/2010.251.112.1 – 10.251.127.25410.251.127.255
5710.251.128.0/2010.251.128.1 – 10.251.143.25410.251.143.255
5810.251.144.0/2010.251.144.1 – 10.251.159.25410.251.159.255
5910.251.160.0/2010.251.160.1 – 10.251.175.25410.251.175.255
6010.251.176.0/2010.251.176.1 – 10.251.191.25410.251.191.255
6110.251.192.0/2010.251.192.1 – 10.251.207.25410.251.207.255
6210.251.208.0/2010.251.208.1 – 10.251.223.25410.251.223.255
6310.251.224.0/2010.251.224.1 – 10.251.239.25410.251.239.255
6410.251.240.0/2010.251.240.1 – 10.251.255.25410.251.255.255
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 →