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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)10.224.0.0/11
network10.224.0.0/11
broadcast10.255.255.255
first host10.224.0.1
last host10.255.255.254
subnet mask255.224.0.0
wildcard0.31.255.255
addresses2,097,152
usable hosts2,097,150
classA
ipcalc 10.224.0.0/11
address00001010.11100000.00000000.00000000
subnet mask11111111.11100000.00000000.00000000
network00001010.11100000.00000000.00000000
broadcast00001010.11111111.11111111.11111111
green = network part, grey = host part
hex0x0ae00000
decimal182452224
reverse dns0.0.224.10.in-addr.arpa
ipv4-mapped::ffff:ae0:0

/11 split into /17 · 64 subnets

close ×
#networkhost rangebroadcast
110.224.0.0/1710.224.0.1 – 10.224.127.25410.224.127.255
210.224.128.0/1710.224.128.1 – 10.224.255.25410.224.255.255
310.225.0.0/1710.225.0.1 – 10.225.127.25410.225.127.255
410.225.128.0/1710.225.128.1 – 10.225.255.25410.225.255.255
510.226.0.0/1710.226.0.1 – 10.226.127.25410.226.127.255
610.226.128.0/1710.226.128.1 – 10.226.255.25410.226.255.255
710.227.0.0/1710.227.0.1 – 10.227.127.25410.227.127.255
810.227.128.0/1710.227.128.1 – 10.227.255.25410.227.255.255
910.228.0.0/1710.228.0.1 – 10.228.127.25410.228.127.255
1010.228.128.0/1710.228.128.1 – 10.228.255.25410.228.255.255
1110.229.0.0/1710.229.0.1 – 10.229.127.25410.229.127.255
1210.229.128.0/1710.229.128.1 – 10.229.255.25410.229.255.255
1310.230.0.0/1710.230.0.1 – 10.230.127.25410.230.127.255
1410.230.128.0/1710.230.128.1 – 10.230.255.25410.230.255.255
1510.231.0.0/1710.231.0.1 – 10.231.127.25410.231.127.255
1610.231.128.0/1710.231.128.1 – 10.231.255.25410.231.255.255
1710.232.0.0/1710.232.0.1 – 10.232.127.25410.232.127.255
1810.232.128.0/1710.232.128.1 – 10.232.255.25410.232.255.255
1910.233.0.0/1710.233.0.1 – 10.233.127.25410.233.127.255
2010.233.128.0/1710.233.128.1 – 10.233.255.25410.233.255.255
2110.234.0.0/1710.234.0.1 – 10.234.127.25410.234.127.255
2210.234.128.0/1710.234.128.1 – 10.234.255.25410.234.255.255
2310.235.0.0/1710.235.0.1 – 10.235.127.25410.235.127.255
2410.235.128.0/1710.235.128.1 – 10.235.255.25410.235.255.255
2510.236.0.0/1710.236.0.1 – 10.236.127.25410.236.127.255
2610.236.128.0/1710.236.128.1 – 10.236.255.25410.236.255.255
2710.237.0.0/1710.237.0.1 – 10.237.127.25410.237.127.255
2810.237.128.0/1710.237.128.1 – 10.237.255.25410.237.255.255
2910.238.0.0/1710.238.0.1 – 10.238.127.25410.238.127.255
3010.238.128.0/1710.238.128.1 – 10.238.255.25410.238.255.255
3110.239.0.0/1710.239.0.1 – 10.239.127.25410.239.127.255
3210.239.128.0/1710.239.128.1 – 10.239.255.25410.239.255.255
3310.240.0.0/1710.240.0.1 – 10.240.127.25410.240.127.255
3410.240.128.0/1710.240.128.1 – 10.240.255.25410.240.255.255
3510.241.0.0/1710.241.0.1 – 10.241.127.25410.241.127.255
3610.241.128.0/1710.241.128.1 – 10.241.255.25410.241.255.255
3710.242.0.0/1710.242.0.1 – 10.242.127.25410.242.127.255
3810.242.128.0/1710.242.128.1 – 10.242.255.25410.242.255.255
3910.243.0.0/1710.243.0.1 – 10.243.127.25410.243.127.255
4010.243.128.0/1710.243.128.1 – 10.243.255.25410.243.255.255
4110.244.0.0/1710.244.0.1 – 10.244.127.25410.244.127.255
4210.244.128.0/1710.244.128.1 – 10.244.255.25410.244.255.255
4310.245.0.0/1710.245.0.1 – 10.245.127.25410.245.127.255
4410.245.128.0/1710.245.128.1 – 10.245.255.25410.245.255.255
4510.246.0.0/1710.246.0.1 – 10.246.127.25410.246.127.255
4610.246.128.0/1710.246.128.1 – 10.246.255.25410.246.255.255
4710.247.0.0/1710.247.0.1 – 10.247.127.25410.247.127.255
4810.247.128.0/1710.247.128.1 – 10.247.255.25410.247.255.255
4910.248.0.0/1710.248.0.1 – 10.248.127.25410.248.127.255
5010.248.128.0/1710.248.128.1 – 10.248.255.25410.248.255.255
5110.249.0.0/1710.249.0.1 – 10.249.127.25410.249.127.255
5210.249.128.0/1710.249.128.1 – 10.249.255.25410.249.255.255
5310.250.0.0/1710.250.0.1 – 10.250.127.25410.250.127.255
5410.250.128.0/1710.250.128.1 – 10.250.255.25410.250.255.255
5510.251.0.0/1710.251.0.1 – 10.251.127.25410.251.127.255
5610.251.128.0/1710.251.128.1 – 10.251.255.25410.251.255.255
5710.252.0.0/1710.252.0.1 – 10.252.127.25410.252.127.255
5810.252.128.0/1710.252.128.1 – 10.252.255.25410.252.255.255
5910.253.0.0/1710.253.0.1 – 10.253.127.25410.253.127.255
6010.253.128.0/1710.253.128.1 – 10.253.255.25410.253.255.255
6110.254.0.0/1710.254.0.1 – 10.254.127.25410.254.127.255
6210.254.128.0/1710.254.128.1 – 10.254.255.25410.254.255.255
6310.255.0.0/1710.255.0.1 – 10.255.127.25410.255.127.255
6410.255.128.0/1710.255.128.1 – 10.255.255.25410.255.255.255
01 / table

IPv4 CIDR prefix table.

Click a prefix longer than your network to split it into subnets.

prefixsubnet maskaddresseshostsin your /11
/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-
/11255.224.0.02,097,1522,097,1501
/12255.240.0.01,048,5761,048,5742 split →
/13255.248.0.0524,288524,2864 split →
/14255.252.0.0262,144262,1428 split →
/15255.254.0.0131,072131,07016 split →
/16255.255.0.065,53665,53432 split →
/17255.255.128.032,76832,76664 split →
/18255.255.192.016,38416,382128 split →
/19255.255.224.08,1928,190256 split →
/20255.255.240.04,0964,094512 split →
/21255.255.248.02,0482,0461,024 split →
/22255.255.252.01,0241,0222,048 split →
/23255.255.254.05125104,096 split →
/24255.255.255.02562548,192 split →
/25255.255.255.12812812616,384 split →
/26255.255.255.192646232,768 split →
/27255.255.255.224323065,536 split →
/28255.255.255.2401614131,072 split →
/29255.255.255.24886262,144 split →
/30255.255.255.25242524,288 split →
/31255.255.255.254221,048,576 split →
/32255.255.255.255112,097,152 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 →