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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)10.28.0.0/14
network10.28.0.0/14
broadcast10.31.255.255
first host10.28.0.1
last host10.31.255.254
subnet mask255.252.0.0
wildcard0.3.255.255
addresses262,144
usable hosts262,142
classA
ipcalc 10.28.0.0/14
address00001010.00011100.00000000.00000000
subnet mask11111111.11111100.00000000.00000000
network00001010.00011100.00000000.00000000
broadcast00001010.00011111.11111111.11111111
green = network part, grey = host part
hex0x0a1c0000
decimal169607168
reverse dns0.0.28.10.in-addr.arpa
ipv4-mapped::ffff:a1c:0

/14 split into /20 · 64 subnets

close ×
#networkhost rangebroadcast
110.28.0.0/2010.28.0.1 – 10.28.15.25410.28.15.255
210.28.16.0/2010.28.16.1 – 10.28.31.25410.28.31.255
310.28.32.0/2010.28.32.1 – 10.28.47.25410.28.47.255
410.28.48.0/2010.28.48.1 – 10.28.63.25410.28.63.255
510.28.64.0/2010.28.64.1 – 10.28.79.25410.28.79.255
610.28.80.0/2010.28.80.1 – 10.28.95.25410.28.95.255
710.28.96.0/2010.28.96.1 – 10.28.111.25410.28.111.255
810.28.112.0/2010.28.112.1 – 10.28.127.25410.28.127.255
910.28.128.0/2010.28.128.1 – 10.28.143.25410.28.143.255
1010.28.144.0/2010.28.144.1 – 10.28.159.25410.28.159.255
1110.28.160.0/2010.28.160.1 – 10.28.175.25410.28.175.255
1210.28.176.0/2010.28.176.1 – 10.28.191.25410.28.191.255
1310.28.192.0/2010.28.192.1 – 10.28.207.25410.28.207.255
1410.28.208.0/2010.28.208.1 – 10.28.223.25410.28.223.255
1510.28.224.0/2010.28.224.1 – 10.28.239.25410.28.239.255
1610.28.240.0/2010.28.240.1 – 10.28.255.25410.28.255.255
1710.29.0.0/2010.29.0.1 – 10.29.15.25410.29.15.255
1810.29.16.0/2010.29.16.1 – 10.29.31.25410.29.31.255
1910.29.32.0/2010.29.32.1 – 10.29.47.25410.29.47.255
2010.29.48.0/2010.29.48.1 – 10.29.63.25410.29.63.255
2110.29.64.0/2010.29.64.1 – 10.29.79.25410.29.79.255
2210.29.80.0/2010.29.80.1 – 10.29.95.25410.29.95.255
2310.29.96.0/2010.29.96.1 – 10.29.111.25410.29.111.255
2410.29.112.0/2010.29.112.1 – 10.29.127.25410.29.127.255
2510.29.128.0/2010.29.128.1 – 10.29.143.25410.29.143.255
2610.29.144.0/2010.29.144.1 – 10.29.159.25410.29.159.255
2710.29.160.0/2010.29.160.1 – 10.29.175.25410.29.175.255
2810.29.176.0/2010.29.176.1 – 10.29.191.25410.29.191.255
2910.29.192.0/2010.29.192.1 – 10.29.207.25410.29.207.255
3010.29.208.0/2010.29.208.1 – 10.29.223.25410.29.223.255
3110.29.224.0/2010.29.224.1 – 10.29.239.25410.29.239.255
3210.29.240.0/2010.29.240.1 – 10.29.255.25410.29.255.255
3310.30.0.0/2010.30.0.1 – 10.30.15.25410.30.15.255
3410.30.16.0/2010.30.16.1 – 10.30.31.25410.30.31.255
3510.30.32.0/2010.30.32.1 – 10.30.47.25410.30.47.255
3610.30.48.0/2010.30.48.1 – 10.30.63.25410.30.63.255
3710.30.64.0/2010.30.64.1 – 10.30.79.25410.30.79.255
3810.30.80.0/2010.30.80.1 – 10.30.95.25410.30.95.255
3910.30.96.0/2010.30.96.1 – 10.30.111.25410.30.111.255
4010.30.112.0/2010.30.112.1 – 10.30.127.25410.30.127.255
4110.30.128.0/2010.30.128.1 – 10.30.143.25410.30.143.255
4210.30.144.0/2010.30.144.1 – 10.30.159.25410.30.159.255
4310.30.160.0/2010.30.160.1 – 10.30.175.25410.30.175.255
4410.30.176.0/2010.30.176.1 – 10.30.191.25410.30.191.255
4510.30.192.0/2010.30.192.1 – 10.30.207.25410.30.207.255
4610.30.208.0/2010.30.208.1 – 10.30.223.25410.30.223.255
4710.30.224.0/2010.30.224.1 – 10.30.239.25410.30.239.255
4810.30.240.0/2010.30.240.1 – 10.30.255.25410.30.255.255
4910.31.0.0/2010.31.0.1 – 10.31.15.25410.31.15.255
5010.31.16.0/2010.31.16.1 – 10.31.31.25410.31.31.255
5110.31.32.0/2010.31.32.1 – 10.31.47.25410.31.47.255
5210.31.48.0/2010.31.48.1 – 10.31.63.25410.31.63.255
5310.31.64.0/2010.31.64.1 – 10.31.79.25410.31.79.255
5410.31.80.0/2010.31.80.1 – 10.31.95.25410.31.95.255
5510.31.96.0/2010.31.96.1 – 10.31.111.25410.31.111.255
5610.31.112.0/2010.31.112.1 – 10.31.127.25410.31.127.255
5710.31.128.0/2010.31.128.1 – 10.31.143.25410.31.143.255
5810.31.144.0/2010.31.144.1 – 10.31.159.25410.31.159.255
5910.31.160.0/2010.31.160.1 – 10.31.175.25410.31.175.255
6010.31.176.0/2010.31.176.1 – 10.31.191.25410.31.191.255
6110.31.192.0/2010.31.192.1 – 10.31.207.25410.31.207.255
6210.31.208.0/2010.31.208.1 – 10.31.223.25410.31.223.255
6310.31.224.0/2010.31.224.1 – 10.31.239.25410.31.239.255
6410.31.240.0/2010.31.240.1 – 10.31.255.25410.31.255.255
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 →