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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)10.140.0.0/14
network10.140.0.0/14
broadcast10.143.255.255
first host10.140.0.1
last host10.143.255.254
subnet mask255.252.0.0
wildcard0.3.255.255
addresses262,144
usable hosts262,142
classA
ipcalc 10.140.0.0/14
address00001010.10001100.00000000.00000000
subnet mask11111111.11111100.00000000.00000000
network00001010.10001100.00000000.00000000
broadcast00001010.10001111.11111111.11111111
green = network part, grey = host part
hex0x0a8c0000
decimal176947200
reverse dns0.0.140.10.in-addr.arpa
ipv4-mapped::ffff:a8c:0

/14 split into /20 · 64 subnets

close ×
#networkhost rangebroadcast
110.140.0.0/2010.140.0.1 – 10.140.15.25410.140.15.255
210.140.16.0/2010.140.16.1 – 10.140.31.25410.140.31.255
310.140.32.0/2010.140.32.1 – 10.140.47.25410.140.47.255
410.140.48.0/2010.140.48.1 – 10.140.63.25410.140.63.255
510.140.64.0/2010.140.64.1 – 10.140.79.25410.140.79.255
610.140.80.0/2010.140.80.1 – 10.140.95.25410.140.95.255
710.140.96.0/2010.140.96.1 – 10.140.111.25410.140.111.255
810.140.112.0/2010.140.112.1 – 10.140.127.25410.140.127.255
910.140.128.0/2010.140.128.1 – 10.140.143.25410.140.143.255
1010.140.144.0/2010.140.144.1 – 10.140.159.25410.140.159.255
1110.140.160.0/2010.140.160.1 – 10.140.175.25410.140.175.255
1210.140.176.0/2010.140.176.1 – 10.140.191.25410.140.191.255
1310.140.192.0/2010.140.192.1 – 10.140.207.25410.140.207.255
1410.140.208.0/2010.140.208.1 – 10.140.223.25410.140.223.255
1510.140.224.0/2010.140.224.1 – 10.140.239.25410.140.239.255
1610.140.240.0/2010.140.240.1 – 10.140.255.25410.140.255.255
1710.141.0.0/2010.141.0.1 – 10.141.15.25410.141.15.255
1810.141.16.0/2010.141.16.1 – 10.141.31.25410.141.31.255
1910.141.32.0/2010.141.32.1 – 10.141.47.25410.141.47.255
2010.141.48.0/2010.141.48.1 – 10.141.63.25410.141.63.255
2110.141.64.0/2010.141.64.1 – 10.141.79.25410.141.79.255
2210.141.80.0/2010.141.80.1 – 10.141.95.25410.141.95.255
2310.141.96.0/2010.141.96.1 – 10.141.111.25410.141.111.255
2410.141.112.0/2010.141.112.1 – 10.141.127.25410.141.127.255
2510.141.128.0/2010.141.128.1 – 10.141.143.25410.141.143.255
2610.141.144.0/2010.141.144.1 – 10.141.159.25410.141.159.255
2710.141.160.0/2010.141.160.1 – 10.141.175.25410.141.175.255
2810.141.176.0/2010.141.176.1 – 10.141.191.25410.141.191.255
2910.141.192.0/2010.141.192.1 – 10.141.207.25410.141.207.255
3010.141.208.0/2010.141.208.1 – 10.141.223.25410.141.223.255
3110.141.224.0/2010.141.224.1 – 10.141.239.25410.141.239.255
3210.141.240.0/2010.141.240.1 – 10.141.255.25410.141.255.255
3310.142.0.0/2010.142.0.1 – 10.142.15.25410.142.15.255
3410.142.16.0/2010.142.16.1 – 10.142.31.25410.142.31.255
3510.142.32.0/2010.142.32.1 – 10.142.47.25410.142.47.255
3610.142.48.0/2010.142.48.1 – 10.142.63.25410.142.63.255
3710.142.64.0/2010.142.64.1 – 10.142.79.25410.142.79.255
3810.142.80.0/2010.142.80.1 – 10.142.95.25410.142.95.255
3910.142.96.0/2010.142.96.1 – 10.142.111.25410.142.111.255
4010.142.112.0/2010.142.112.1 – 10.142.127.25410.142.127.255
4110.142.128.0/2010.142.128.1 – 10.142.143.25410.142.143.255
4210.142.144.0/2010.142.144.1 – 10.142.159.25410.142.159.255
4310.142.160.0/2010.142.160.1 – 10.142.175.25410.142.175.255
4410.142.176.0/2010.142.176.1 – 10.142.191.25410.142.191.255
4510.142.192.0/2010.142.192.1 – 10.142.207.25410.142.207.255
4610.142.208.0/2010.142.208.1 – 10.142.223.25410.142.223.255
4710.142.224.0/2010.142.224.1 – 10.142.239.25410.142.239.255
4810.142.240.0/2010.142.240.1 – 10.142.255.25410.142.255.255
4910.143.0.0/2010.143.0.1 – 10.143.15.25410.143.15.255
5010.143.16.0/2010.143.16.1 – 10.143.31.25410.143.31.255
5110.143.32.0/2010.143.32.1 – 10.143.47.25410.143.47.255
5210.143.48.0/2010.143.48.1 – 10.143.63.25410.143.63.255
5310.143.64.0/2010.143.64.1 – 10.143.79.25410.143.79.255
5410.143.80.0/2010.143.80.1 – 10.143.95.25410.143.95.255
5510.143.96.0/2010.143.96.1 – 10.143.111.25410.143.111.255
5610.143.112.0/2010.143.112.1 – 10.143.127.25410.143.127.255
5710.143.128.0/2010.143.128.1 – 10.143.143.25410.143.143.255
5810.143.144.0/2010.143.144.1 – 10.143.159.25410.143.159.255
5910.143.160.0/2010.143.160.1 – 10.143.175.25410.143.175.255
6010.143.176.0/2010.143.176.1 – 10.143.191.25410.143.191.255
6110.143.192.0/2010.143.192.1 – 10.143.207.25410.143.207.255
6210.143.208.0/2010.143.208.1 – 10.143.223.25410.143.223.255
6310.143.224.0/2010.143.224.1 – 10.143.239.25410.143.239.255
6410.143.240.0/2010.143.240.1 – 10.143.255.25410.143.255.255
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 →