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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)10.172.0.0/14
network10.172.0.0/14
broadcast10.175.255.255
first host10.172.0.1
last host10.175.255.254
subnet mask255.252.0.0
wildcard0.3.255.255
addresses262,144
usable hosts262,142
classA
ipcalc 10.172.0.0/14
address00001010.10101100.00000000.00000000
subnet mask11111111.11111100.00000000.00000000
network00001010.10101100.00000000.00000000
broadcast00001010.10101111.11111111.11111111
green = network part, grey = host part
hex0x0aac0000
decimal179044352
reverse dns0.0.172.10.in-addr.arpa
ipv4-mapped::ffff:aac:0

/14 split into /20 · 64 subnets

close ×
#networkhost rangebroadcast
110.172.0.0/2010.172.0.1 – 10.172.15.25410.172.15.255
210.172.16.0/2010.172.16.1 – 10.172.31.25410.172.31.255
310.172.32.0/2010.172.32.1 – 10.172.47.25410.172.47.255
410.172.48.0/2010.172.48.1 – 10.172.63.25410.172.63.255
510.172.64.0/2010.172.64.1 – 10.172.79.25410.172.79.255
610.172.80.0/2010.172.80.1 – 10.172.95.25410.172.95.255
710.172.96.0/2010.172.96.1 – 10.172.111.25410.172.111.255
810.172.112.0/2010.172.112.1 – 10.172.127.25410.172.127.255
910.172.128.0/2010.172.128.1 – 10.172.143.25410.172.143.255
1010.172.144.0/2010.172.144.1 – 10.172.159.25410.172.159.255
1110.172.160.0/2010.172.160.1 – 10.172.175.25410.172.175.255
1210.172.176.0/2010.172.176.1 – 10.172.191.25410.172.191.255
1310.172.192.0/2010.172.192.1 – 10.172.207.25410.172.207.255
1410.172.208.0/2010.172.208.1 – 10.172.223.25410.172.223.255
1510.172.224.0/2010.172.224.1 – 10.172.239.25410.172.239.255
1610.172.240.0/2010.172.240.1 – 10.172.255.25410.172.255.255
1710.173.0.0/2010.173.0.1 – 10.173.15.25410.173.15.255
1810.173.16.0/2010.173.16.1 – 10.173.31.25410.173.31.255
1910.173.32.0/2010.173.32.1 – 10.173.47.25410.173.47.255
2010.173.48.0/2010.173.48.1 – 10.173.63.25410.173.63.255
2110.173.64.0/2010.173.64.1 – 10.173.79.25410.173.79.255
2210.173.80.0/2010.173.80.1 – 10.173.95.25410.173.95.255
2310.173.96.0/2010.173.96.1 – 10.173.111.25410.173.111.255
2410.173.112.0/2010.173.112.1 – 10.173.127.25410.173.127.255
2510.173.128.0/2010.173.128.1 – 10.173.143.25410.173.143.255
2610.173.144.0/2010.173.144.1 – 10.173.159.25410.173.159.255
2710.173.160.0/2010.173.160.1 – 10.173.175.25410.173.175.255
2810.173.176.0/2010.173.176.1 – 10.173.191.25410.173.191.255
2910.173.192.0/2010.173.192.1 – 10.173.207.25410.173.207.255
3010.173.208.0/2010.173.208.1 – 10.173.223.25410.173.223.255
3110.173.224.0/2010.173.224.1 – 10.173.239.25410.173.239.255
3210.173.240.0/2010.173.240.1 – 10.173.255.25410.173.255.255
3310.174.0.0/2010.174.0.1 – 10.174.15.25410.174.15.255
3410.174.16.0/2010.174.16.1 – 10.174.31.25410.174.31.255
3510.174.32.0/2010.174.32.1 – 10.174.47.25410.174.47.255
3610.174.48.0/2010.174.48.1 – 10.174.63.25410.174.63.255
3710.174.64.0/2010.174.64.1 – 10.174.79.25410.174.79.255
3810.174.80.0/2010.174.80.1 – 10.174.95.25410.174.95.255
3910.174.96.0/2010.174.96.1 – 10.174.111.25410.174.111.255
4010.174.112.0/2010.174.112.1 – 10.174.127.25410.174.127.255
4110.174.128.0/2010.174.128.1 – 10.174.143.25410.174.143.255
4210.174.144.0/2010.174.144.1 – 10.174.159.25410.174.159.255
4310.174.160.0/2010.174.160.1 – 10.174.175.25410.174.175.255
4410.174.176.0/2010.174.176.1 – 10.174.191.25410.174.191.255
4510.174.192.0/2010.174.192.1 – 10.174.207.25410.174.207.255
4610.174.208.0/2010.174.208.1 – 10.174.223.25410.174.223.255
4710.174.224.0/2010.174.224.1 – 10.174.239.25410.174.239.255
4810.174.240.0/2010.174.240.1 – 10.174.255.25410.174.255.255
4910.175.0.0/2010.175.0.1 – 10.175.15.25410.175.15.255
5010.175.16.0/2010.175.16.1 – 10.175.31.25410.175.31.255
5110.175.32.0/2010.175.32.1 – 10.175.47.25410.175.47.255
5210.175.48.0/2010.175.48.1 – 10.175.63.25410.175.63.255
5310.175.64.0/2010.175.64.1 – 10.175.79.25410.175.79.255
5410.175.80.0/2010.175.80.1 – 10.175.95.25410.175.95.255
5510.175.96.0/2010.175.96.1 – 10.175.111.25410.175.111.255
5610.175.112.0/2010.175.112.1 – 10.175.127.25410.175.127.255
5710.175.128.0/2010.175.128.1 – 10.175.143.25410.175.143.255
5810.175.144.0/2010.175.144.1 – 10.175.159.25410.175.159.255
5910.175.160.0/2010.175.160.1 – 10.175.175.25410.175.175.255
6010.175.176.0/2010.175.176.1 – 10.175.191.25410.175.191.255
6110.175.192.0/2010.175.192.1 – 10.175.207.25410.175.207.255
6210.175.208.0/2010.175.208.1 – 10.175.223.25410.175.223.255
6310.175.224.0/2010.175.224.1 – 10.175.239.25410.175.239.255
6410.175.240.0/2010.175.240.1 – 10.175.255.25410.175.255.255
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 →