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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)10.36.0.0/14
network10.36.0.0/14
broadcast10.39.255.255
first host10.36.0.1
last host10.39.255.254
subnet mask255.252.0.0
wildcard0.3.255.255
addresses262,144
usable hosts262,142
classA
ipcalc 10.36.0.0/14
address00001010.00100100.00000000.00000000
subnet mask11111111.11111100.00000000.00000000
network00001010.00100100.00000000.00000000
broadcast00001010.00100111.11111111.11111111
green = network part, grey = host part
hex0x0a240000
decimal170131456
reverse dns0.0.36.10.in-addr.arpa
ipv4-mapped::ffff:a24:0

/14 split into /20 · 64 subnets

close ×
#networkhost rangebroadcast
110.36.0.0/2010.36.0.1 – 10.36.15.25410.36.15.255
210.36.16.0/2010.36.16.1 – 10.36.31.25410.36.31.255
310.36.32.0/2010.36.32.1 – 10.36.47.25410.36.47.255
410.36.48.0/2010.36.48.1 – 10.36.63.25410.36.63.255
510.36.64.0/2010.36.64.1 – 10.36.79.25410.36.79.255
610.36.80.0/2010.36.80.1 – 10.36.95.25410.36.95.255
710.36.96.0/2010.36.96.1 – 10.36.111.25410.36.111.255
810.36.112.0/2010.36.112.1 – 10.36.127.25410.36.127.255
910.36.128.0/2010.36.128.1 – 10.36.143.25410.36.143.255
1010.36.144.0/2010.36.144.1 – 10.36.159.25410.36.159.255
1110.36.160.0/2010.36.160.1 – 10.36.175.25410.36.175.255
1210.36.176.0/2010.36.176.1 – 10.36.191.25410.36.191.255
1310.36.192.0/2010.36.192.1 – 10.36.207.25410.36.207.255
1410.36.208.0/2010.36.208.1 – 10.36.223.25410.36.223.255
1510.36.224.0/2010.36.224.1 – 10.36.239.25410.36.239.255
1610.36.240.0/2010.36.240.1 – 10.36.255.25410.36.255.255
1710.37.0.0/2010.37.0.1 – 10.37.15.25410.37.15.255
1810.37.16.0/2010.37.16.1 – 10.37.31.25410.37.31.255
1910.37.32.0/2010.37.32.1 – 10.37.47.25410.37.47.255
2010.37.48.0/2010.37.48.1 – 10.37.63.25410.37.63.255
2110.37.64.0/2010.37.64.1 – 10.37.79.25410.37.79.255
2210.37.80.0/2010.37.80.1 – 10.37.95.25410.37.95.255
2310.37.96.0/2010.37.96.1 – 10.37.111.25410.37.111.255
2410.37.112.0/2010.37.112.1 – 10.37.127.25410.37.127.255
2510.37.128.0/2010.37.128.1 – 10.37.143.25410.37.143.255
2610.37.144.0/2010.37.144.1 – 10.37.159.25410.37.159.255
2710.37.160.0/2010.37.160.1 – 10.37.175.25410.37.175.255
2810.37.176.0/2010.37.176.1 – 10.37.191.25410.37.191.255
2910.37.192.0/2010.37.192.1 – 10.37.207.25410.37.207.255
3010.37.208.0/2010.37.208.1 – 10.37.223.25410.37.223.255
3110.37.224.0/2010.37.224.1 – 10.37.239.25410.37.239.255
3210.37.240.0/2010.37.240.1 – 10.37.255.25410.37.255.255
3310.38.0.0/2010.38.0.1 – 10.38.15.25410.38.15.255
3410.38.16.0/2010.38.16.1 – 10.38.31.25410.38.31.255
3510.38.32.0/2010.38.32.1 – 10.38.47.25410.38.47.255
3610.38.48.0/2010.38.48.1 – 10.38.63.25410.38.63.255
3710.38.64.0/2010.38.64.1 – 10.38.79.25410.38.79.255
3810.38.80.0/2010.38.80.1 – 10.38.95.25410.38.95.255
3910.38.96.0/2010.38.96.1 – 10.38.111.25410.38.111.255
4010.38.112.0/2010.38.112.1 – 10.38.127.25410.38.127.255
4110.38.128.0/2010.38.128.1 – 10.38.143.25410.38.143.255
4210.38.144.0/2010.38.144.1 – 10.38.159.25410.38.159.255
4310.38.160.0/2010.38.160.1 – 10.38.175.25410.38.175.255
4410.38.176.0/2010.38.176.1 – 10.38.191.25410.38.191.255
4510.38.192.0/2010.38.192.1 – 10.38.207.25410.38.207.255
4610.38.208.0/2010.38.208.1 – 10.38.223.25410.38.223.255
4710.38.224.0/2010.38.224.1 – 10.38.239.25410.38.239.255
4810.38.240.0/2010.38.240.1 – 10.38.255.25410.38.255.255
4910.39.0.0/2010.39.0.1 – 10.39.15.25410.39.15.255
5010.39.16.0/2010.39.16.1 – 10.39.31.25410.39.31.255
5110.39.32.0/2010.39.32.1 – 10.39.47.25410.39.47.255
5210.39.48.0/2010.39.48.1 – 10.39.63.25410.39.63.255
5310.39.64.0/2010.39.64.1 – 10.39.79.25410.39.79.255
5410.39.80.0/2010.39.80.1 – 10.39.95.25410.39.95.255
5510.39.96.0/2010.39.96.1 – 10.39.111.25410.39.111.255
5610.39.112.0/2010.39.112.1 – 10.39.127.25410.39.127.255
5710.39.128.0/2010.39.128.1 – 10.39.143.25410.39.143.255
5810.39.144.0/2010.39.144.1 – 10.39.159.25410.39.159.255
5910.39.160.0/2010.39.160.1 – 10.39.175.25410.39.175.255
6010.39.176.0/2010.39.176.1 – 10.39.191.25410.39.191.255
6110.39.192.0/2010.39.192.1 – 10.39.207.25410.39.207.255
6210.39.208.0/2010.39.208.1 – 10.39.223.25410.39.223.255
6310.39.224.0/2010.39.224.1 – 10.39.239.25410.39.239.255
6410.39.240.0/2010.39.240.1 – 10.39.255.25410.39.255.255
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 →