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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)10.160.0.0/11
network10.160.0.0/11
broadcast10.191.255.255
first host10.160.0.1
last host10.191.255.254
subnet mask255.224.0.0
wildcard0.31.255.255
addresses2,097,152
usable hosts2,097,150
classA
ipcalc 10.160.0.0/11
address00001010.10100000.00000000.00000000
subnet mask11111111.11100000.00000000.00000000
network00001010.10100000.00000000.00000000
broadcast00001010.10111111.11111111.11111111
green = network part, grey = host part
hex0x0aa00000
decimal178257920
reverse dns0.0.160.10.in-addr.arpa
ipv4-mapped::ffff:aa0:0

/11 split into /17 · 64 subnets

close ×
#networkhost rangebroadcast
110.160.0.0/1710.160.0.1 – 10.160.127.25410.160.127.255
210.160.128.0/1710.160.128.1 – 10.160.255.25410.160.255.255
310.161.0.0/1710.161.0.1 – 10.161.127.25410.161.127.255
410.161.128.0/1710.161.128.1 – 10.161.255.25410.161.255.255
510.162.0.0/1710.162.0.1 – 10.162.127.25410.162.127.255
610.162.128.0/1710.162.128.1 – 10.162.255.25410.162.255.255
710.163.0.0/1710.163.0.1 – 10.163.127.25410.163.127.255
810.163.128.0/1710.163.128.1 – 10.163.255.25410.163.255.255
910.164.0.0/1710.164.0.1 – 10.164.127.25410.164.127.255
1010.164.128.0/1710.164.128.1 – 10.164.255.25410.164.255.255
1110.165.0.0/1710.165.0.1 – 10.165.127.25410.165.127.255
1210.165.128.0/1710.165.128.1 – 10.165.255.25410.165.255.255
1310.166.0.0/1710.166.0.1 – 10.166.127.25410.166.127.255
1410.166.128.0/1710.166.128.1 – 10.166.255.25410.166.255.255
1510.167.0.0/1710.167.0.1 – 10.167.127.25410.167.127.255
1610.167.128.0/1710.167.128.1 – 10.167.255.25410.167.255.255
1710.168.0.0/1710.168.0.1 – 10.168.127.25410.168.127.255
1810.168.128.0/1710.168.128.1 – 10.168.255.25410.168.255.255
1910.169.0.0/1710.169.0.1 – 10.169.127.25410.169.127.255
2010.169.128.0/1710.169.128.1 – 10.169.255.25410.169.255.255
2110.170.0.0/1710.170.0.1 – 10.170.127.25410.170.127.255
2210.170.128.0/1710.170.128.1 – 10.170.255.25410.170.255.255
2310.171.0.0/1710.171.0.1 – 10.171.127.25410.171.127.255
2410.171.128.0/1710.171.128.1 – 10.171.255.25410.171.255.255
2510.172.0.0/1710.172.0.1 – 10.172.127.25410.172.127.255
2610.172.128.0/1710.172.128.1 – 10.172.255.25410.172.255.255
2710.173.0.0/1710.173.0.1 – 10.173.127.25410.173.127.255
2810.173.128.0/1710.173.128.1 – 10.173.255.25410.173.255.255
2910.174.0.0/1710.174.0.1 – 10.174.127.25410.174.127.255
3010.174.128.0/1710.174.128.1 – 10.174.255.25410.174.255.255
3110.175.0.0/1710.175.0.1 – 10.175.127.25410.175.127.255
3210.175.128.0/1710.175.128.1 – 10.175.255.25410.175.255.255
3310.176.0.0/1710.176.0.1 – 10.176.127.25410.176.127.255
3410.176.128.0/1710.176.128.1 – 10.176.255.25410.176.255.255
3510.177.0.0/1710.177.0.1 – 10.177.127.25410.177.127.255
3610.177.128.0/1710.177.128.1 – 10.177.255.25410.177.255.255
3710.178.0.0/1710.178.0.1 – 10.178.127.25410.178.127.255
3810.178.128.0/1710.178.128.1 – 10.178.255.25410.178.255.255
3910.179.0.0/1710.179.0.1 – 10.179.127.25410.179.127.255
4010.179.128.0/1710.179.128.1 – 10.179.255.25410.179.255.255
4110.180.0.0/1710.180.0.1 – 10.180.127.25410.180.127.255
4210.180.128.0/1710.180.128.1 – 10.180.255.25410.180.255.255
4310.181.0.0/1710.181.0.1 – 10.181.127.25410.181.127.255
4410.181.128.0/1710.181.128.1 – 10.181.255.25410.181.255.255
4510.182.0.0/1710.182.0.1 – 10.182.127.25410.182.127.255
4610.182.128.0/1710.182.128.1 – 10.182.255.25410.182.255.255
4710.183.0.0/1710.183.0.1 – 10.183.127.25410.183.127.255
4810.183.128.0/1710.183.128.1 – 10.183.255.25410.183.255.255
4910.184.0.0/1710.184.0.1 – 10.184.127.25410.184.127.255
5010.184.128.0/1710.184.128.1 – 10.184.255.25410.184.255.255
5110.185.0.0/1710.185.0.1 – 10.185.127.25410.185.127.255
5210.185.128.0/1710.185.128.1 – 10.185.255.25410.185.255.255
5310.186.0.0/1710.186.0.1 – 10.186.127.25410.186.127.255
5410.186.128.0/1710.186.128.1 – 10.186.255.25410.186.255.255
5510.187.0.0/1710.187.0.1 – 10.187.127.25410.187.127.255
5610.187.128.0/1710.187.128.1 – 10.187.255.25410.187.255.255
5710.188.0.0/1710.188.0.1 – 10.188.127.25410.188.127.255
5810.188.128.0/1710.188.128.1 – 10.188.255.25410.188.255.255
5910.189.0.0/1710.189.0.1 – 10.189.127.25410.189.127.255
6010.189.128.0/1710.189.128.1 – 10.189.255.25410.189.255.255
6110.190.0.0/1710.190.0.1 – 10.190.127.25410.190.127.255
6210.190.128.0/1710.190.128.1 – 10.190.255.25410.190.255.255
6310.191.0.0/1710.191.0.1 – 10.191.127.25410.191.127.255
6410.191.128.0/1710.191.128.1 – 10.191.255.25410.191.255.255
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 →