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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)10.68.0.0/14
network10.68.0.0/14
broadcast10.71.255.255
first host10.68.0.1
last host10.71.255.254
subnet mask255.252.0.0
wildcard0.3.255.255
addresses262,144
usable hosts262,142
classA
ipcalc 10.68.0.0/14
address00001010.01000100.00000000.00000000
subnet mask11111111.11111100.00000000.00000000
network00001010.01000100.00000000.00000000
broadcast00001010.01000111.11111111.11111111
green = network part, grey = host part
hex0x0a440000
decimal172228608
reverse dns0.0.68.10.in-addr.arpa
ipv4-mapped::ffff:a44:0

/14 split into /20 · 64 subnets

close ×
#networkhost rangebroadcast
110.68.0.0/2010.68.0.1 – 10.68.15.25410.68.15.255
210.68.16.0/2010.68.16.1 – 10.68.31.25410.68.31.255
310.68.32.0/2010.68.32.1 – 10.68.47.25410.68.47.255
410.68.48.0/2010.68.48.1 – 10.68.63.25410.68.63.255
510.68.64.0/2010.68.64.1 – 10.68.79.25410.68.79.255
610.68.80.0/2010.68.80.1 – 10.68.95.25410.68.95.255
710.68.96.0/2010.68.96.1 – 10.68.111.25410.68.111.255
810.68.112.0/2010.68.112.1 – 10.68.127.25410.68.127.255
910.68.128.0/2010.68.128.1 – 10.68.143.25410.68.143.255
1010.68.144.0/2010.68.144.1 – 10.68.159.25410.68.159.255
1110.68.160.0/2010.68.160.1 – 10.68.175.25410.68.175.255
1210.68.176.0/2010.68.176.1 – 10.68.191.25410.68.191.255
1310.68.192.0/2010.68.192.1 – 10.68.207.25410.68.207.255
1410.68.208.0/2010.68.208.1 – 10.68.223.25410.68.223.255
1510.68.224.0/2010.68.224.1 – 10.68.239.25410.68.239.255
1610.68.240.0/2010.68.240.1 – 10.68.255.25410.68.255.255
1710.69.0.0/2010.69.0.1 – 10.69.15.25410.69.15.255
1810.69.16.0/2010.69.16.1 – 10.69.31.25410.69.31.255
1910.69.32.0/2010.69.32.1 – 10.69.47.25410.69.47.255
2010.69.48.0/2010.69.48.1 – 10.69.63.25410.69.63.255
2110.69.64.0/2010.69.64.1 – 10.69.79.25410.69.79.255
2210.69.80.0/2010.69.80.1 – 10.69.95.25410.69.95.255
2310.69.96.0/2010.69.96.1 – 10.69.111.25410.69.111.255
2410.69.112.0/2010.69.112.1 – 10.69.127.25410.69.127.255
2510.69.128.0/2010.69.128.1 – 10.69.143.25410.69.143.255
2610.69.144.0/2010.69.144.1 – 10.69.159.25410.69.159.255
2710.69.160.0/2010.69.160.1 – 10.69.175.25410.69.175.255
2810.69.176.0/2010.69.176.1 – 10.69.191.25410.69.191.255
2910.69.192.0/2010.69.192.1 – 10.69.207.25410.69.207.255
3010.69.208.0/2010.69.208.1 – 10.69.223.25410.69.223.255
3110.69.224.0/2010.69.224.1 – 10.69.239.25410.69.239.255
3210.69.240.0/2010.69.240.1 – 10.69.255.25410.69.255.255
3310.70.0.0/2010.70.0.1 – 10.70.15.25410.70.15.255
3410.70.16.0/2010.70.16.1 – 10.70.31.25410.70.31.255
3510.70.32.0/2010.70.32.1 – 10.70.47.25410.70.47.255
3610.70.48.0/2010.70.48.1 – 10.70.63.25410.70.63.255
3710.70.64.0/2010.70.64.1 – 10.70.79.25410.70.79.255
3810.70.80.0/2010.70.80.1 – 10.70.95.25410.70.95.255
3910.70.96.0/2010.70.96.1 – 10.70.111.25410.70.111.255
4010.70.112.0/2010.70.112.1 – 10.70.127.25410.70.127.255
4110.70.128.0/2010.70.128.1 – 10.70.143.25410.70.143.255
4210.70.144.0/2010.70.144.1 – 10.70.159.25410.70.159.255
4310.70.160.0/2010.70.160.1 – 10.70.175.25410.70.175.255
4410.70.176.0/2010.70.176.1 – 10.70.191.25410.70.191.255
4510.70.192.0/2010.70.192.1 – 10.70.207.25410.70.207.255
4610.70.208.0/2010.70.208.1 – 10.70.223.25410.70.223.255
4710.70.224.0/2010.70.224.1 – 10.70.239.25410.70.239.255
4810.70.240.0/2010.70.240.1 – 10.70.255.25410.70.255.255
4910.71.0.0/2010.71.0.1 – 10.71.15.25410.71.15.255
5010.71.16.0/2010.71.16.1 – 10.71.31.25410.71.31.255
5110.71.32.0/2010.71.32.1 – 10.71.47.25410.71.47.255
5210.71.48.0/2010.71.48.1 – 10.71.63.25410.71.63.255
5310.71.64.0/2010.71.64.1 – 10.71.79.25410.71.79.255
5410.71.80.0/2010.71.80.1 – 10.71.95.25410.71.95.255
5510.71.96.0/2010.71.96.1 – 10.71.111.25410.71.111.255
5610.71.112.0/2010.71.112.1 – 10.71.127.25410.71.127.255
5710.71.128.0/2010.71.128.1 – 10.71.143.25410.71.143.255
5810.71.144.0/2010.71.144.1 – 10.71.159.25410.71.159.255
5910.71.160.0/2010.71.160.1 – 10.71.175.25410.71.175.255
6010.71.176.0/2010.71.176.1 – 10.71.191.25410.71.191.255
6110.71.192.0/2010.71.192.1 – 10.71.207.25410.71.207.255
6210.71.208.0/2010.71.208.1 – 10.71.223.25410.71.223.255
6310.71.224.0/2010.71.224.1 – 10.71.239.25410.71.239.255
6410.71.240.0/2010.71.240.1 – 10.71.255.25410.71.255.255
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 →