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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)10.148.0.0/14
network10.148.0.0/14
broadcast10.151.255.255
first host10.148.0.1
last host10.151.255.254
subnet mask255.252.0.0
wildcard0.3.255.255
addresses262,144
usable hosts262,142
classA
ipcalc 10.148.0.0/14
address00001010.10010100.00000000.00000000
subnet mask11111111.11111100.00000000.00000000
network00001010.10010100.00000000.00000000
broadcast00001010.10010111.11111111.11111111
green = network part, grey = host part
hex0x0a940000
decimal177471488
reverse dns0.0.148.10.in-addr.arpa
ipv4-mapped::ffff:a94:0

/14 split into /20 · 64 subnets

close ×
#networkhost rangebroadcast
110.148.0.0/2010.148.0.1 – 10.148.15.25410.148.15.255
210.148.16.0/2010.148.16.1 – 10.148.31.25410.148.31.255
310.148.32.0/2010.148.32.1 – 10.148.47.25410.148.47.255
410.148.48.0/2010.148.48.1 – 10.148.63.25410.148.63.255
510.148.64.0/2010.148.64.1 – 10.148.79.25410.148.79.255
610.148.80.0/2010.148.80.1 – 10.148.95.25410.148.95.255
710.148.96.0/2010.148.96.1 – 10.148.111.25410.148.111.255
810.148.112.0/2010.148.112.1 – 10.148.127.25410.148.127.255
910.148.128.0/2010.148.128.1 – 10.148.143.25410.148.143.255
1010.148.144.0/2010.148.144.1 – 10.148.159.25410.148.159.255
1110.148.160.0/2010.148.160.1 – 10.148.175.25410.148.175.255
1210.148.176.0/2010.148.176.1 – 10.148.191.25410.148.191.255
1310.148.192.0/2010.148.192.1 – 10.148.207.25410.148.207.255
1410.148.208.0/2010.148.208.1 – 10.148.223.25410.148.223.255
1510.148.224.0/2010.148.224.1 – 10.148.239.25410.148.239.255
1610.148.240.0/2010.148.240.1 – 10.148.255.25410.148.255.255
1710.149.0.0/2010.149.0.1 – 10.149.15.25410.149.15.255
1810.149.16.0/2010.149.16.1 – 10.149.31.25410.149.31.255
1910.149.32.0/2010.149.32.1 – 10.149.47.25410.149.47.255
2010.149.48.0/2010.149.48.1 – 10.149.63.25410.149.63.255
2110.149.64.0/2010.149.64.1 – 10.149.79.25410.149.79.255
2210.149.80.0/2010.149.80.1 – 10.149.95.25410.149.95.255
2310.149.96.0/2010.149.96.1 – 10.149.111.25410.149.111.255
2410.149.112.0/2010.149.112.1 – 10.149.127.25410.149.127.255
2510.149.128.0/2010.149.128.1 – 10.149.143.25410.149.143.255
2610.149.144.0/2010.149.144.1 – 10.149.159.25410.149.159.255
2710.149.160.0/2010.149.160.1 – 10.149.175.25410.149.175.255
2810.149.176.0/2010.149.176.1 – 10.149.191.25410.149.191.255
2910.149.192.0/2010.149.192.1 – 10.149.207.25410.149.207.255
3010.149.208.0/2010.149.208.1 – 10.149.223.25410.149.223.255
3110.149.224.0/2010.149.224.1 – 10.149.239.25410.149.239.255
3210.149.240.0/2010.149.240.1 – 10.149.255.25410.149.255.255
3310.150.0.0/2010.150.0.1 – 10.150.15.25410.150.15.255
3410.150.16.0/2010.150.16.1 – 10.150.31.25410.150.31.255
3510.150.32.0/2010.150.32.1 – 10.150.47.25410.150.47.255
3610.150.48.0/2010.150.48.1 – 10.150.63.25410.150.63.255
3710.150.64.0/2010.150.64.1 – 10.150.79.25410.150.79.255
3810.150.80.0/2010.150.80.1 – 10.150.95.25410.150.95.255
3910.150.96.0/2010.150.96.1 – 10.150.111.25410.150.111.255
4010.150.112.0/2010.150.112.1 – 10.150.127.25410.150.127.255
4110.150.128.0/2010.150.128.1 – 10.150.143.25410.150.143.255
4210.150.144.0/2010.150.144.1 – 10.150.159.25410.150.159.255
4310.150.160.0/2010.150.160.1 – 10.150.175.25410.150.175.255
4410.150.176.0/2010.150.176.1 – 10.150.191.25410.150.191.255
4510.150.192.0/2010.150.192.1 – 10.150.207.25410.150.207.255
4610.150.208.0/2010.150.208.1 – 10.150.223.25410.150.223.255
4710.150.224.0/2010.150.224.1 – 10.150.239.25410.150.239.255
4810.150.240.0/2010.150.240.1 – 10.150.255.25410.150.255.255
4910.151.0.0/2010.151.0.1 – 10.151.15.25410.151.15.255
5010.151.16.0/2010.151.16.1 – 10.151.31.25410.151.31.255
5110.151.32.0/2010.151.32.1 – 10.151.47.25410.151.47.255
5210.151.48.0/2010.151.48.1 – 10.151.63.25410.151.63.255
5310.151.64.0/2010.151.64.1 – 10.151.79.25410.151.79.255
5410.151.80.0/2010.151.80.1 – 10.151.95.25410.151.95.255
5510.151.96.0/2010.151.96.1 – 10.151.111.25410.151.111.255
5610.151.112.0/2010.151.112.1 – 10.151.127.25410.151.127.255
5710.151.128.0/2010.151.128.1 – 10.151.143.25410.151.143.255
5810.151.144.0/2010.151.144.1 – 10.151.159.25410.151.159.255
5910.151.160.0/2010.151.160.1 – 10.151.175.25410.151.175.255
6010.151.176.0/2010.151.176.1 – 10.151.191.25410.151.191.255
6110.151.192.0/2010.151.192.1 – 10.151.207.25410.151.207.255
6210.151.208.0/2010.151.208.1 – 10.151.223.25410.151.223.255
6310.151.224.0/2010.151.224.1 – 10.151.239.25410.151.239.255
6410.151.240.0/2010.151.240.1 – 10.151.255.25410.151.255.255
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 →