ip
ipku.in

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)10.1.88.0/22
network10.1.88.0/22
broadcast10.1.91.255
first host10.1.88.1
last host10.1.91.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.1.88.0/22
address00001010.00000001.01011000.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.00000001.01011000.00000000
broadcast00001010.00000001.01011011.11111111
green = network part, grey = host part
hex0x0a015800
decimal167860224
reverse dns0.88.1.10.in-addr.arpa
ipv4-mapped::ffff:a01:5800

/22 split into /28 · 64 subnets

close ×
#networkhost rangebroadcast
110.1.88.0/2810.1.88.1 – 10.1.88.1410.1.88.15
210.1.88.16/2810.1.88.17 – 10.1.88.3010.1.88.31
310.1.88.32/2810.1.88.33 – 10.1.88.4610.1.88.47
410.1.88.48/2810.1.88.49 – 10.1.88.6210.1.88.63
510.1.88.64/2810.1.88.65 – 10.1.88.7810.1.88.79
610.1.88.80/2810.1.88.81 – 10.1.88.9410.1.88.95
710.1.88.96/2810.1.88.97 – 10.1.88.11010.1.88.111
810.1.88.112/2810.1.88.113 – 10.1.88.12610.1.88.127
910.1.88.128/2810.1.88.129 – 10.1.88.14210.1.88.143
1010.1.88.144/2810.1.88.145 – 10.1.88.15810.1.88.159
1110.1.88.160/2810.1.88.161 – 10.1.88.17410.1.88.175
1210.1.88.176/2810.1.88.177 – 10.1.88.19010.1.88.191
1310.1.88.192/2810.1.88.193 – 10.1.88.20610.1.88.207
1410.1.88.208/2810.1.88.209 – 10.1.88.22210.1.88.223
1510.1.88.224/2810.1.88.225 – 10.1.88.23810.1.88.239
1610.1.88.240/2810.1.88.241 – 10.1.88.25410.1.88.255
1710.1.89.0/2810.1.89.1 – 10.1.89.1410.1.89.15
1810.1.89.16/2810.1.89.17 – 10.1.89.3010.1.89.31
1910.1.89.32/2810.1.89.33 – 10.1.89.4610.1.89.47
2010.1.89.48/2810.1.89.49 – 10.1.89.6210.1.89.63
2110.1.89.64/2810.1.89.65 – 10.1.89.7810.1.89.79
2210.1.89.80/2810.1.89.81 – 10.1.89.9410.1.89.95
2310.1.89.96/2810.1.89.97 – 10.1.89.11010.1.89.111
2410.1.89.112/2810.1.89.113 – 10.1.89.12610.1.89.127
2510.1.89.128/2810.1.89.129 – 10.1.89.14210.1.89.143
2610.1.89.144/2810.1.89.145 – 10.1.89.15810.1.89.159
2710.1.89.160/2810.1.89.161 – 10.1.89.17410.1.89.175
2810.1.89.176/2810.1.89.177 – 10.1.89.19010.1.89.191
2910.1.89.192/2810.1.89.193 – 10.1.89.20610.1.89.207
3010.1.89.208/2810.1.89.209 – 10.1.89.22210.1.89.223
3110.1.89.224/2810.1.89.225 – 10.1.89.23810.1.89.239
3210.1.89.240/2810.1.89.241 – 10.1.89.25410.1.89.255
3310.1.90.0/2810.1.90.1 – 10.1.90.1410.1.90.15
3410.1.90.16/2810.1.90.17 – 10.1.90.3010.1.90.31
3510.1.90.32/2810.1.90.33 – 10.1.90.4610.1.90.47
3610.1.90.48/2810.1.90.49 – 10.1.90.6210.1.90.63
3710.1.90.64/2810.1.90.65 – 10.1.90.7810.1.90.79
3810.1.90.80/2810.1.90.81 – 10.1.90.9410.1.90.95
3910.1.90.96/2810.1.90.97 – 10.1.90.11010.1.90.111
4010.1.90.112/2810.1.90.113 – 10.1.90.12610.1.90.127
4110.1.90.128/2810.1.90.129 – 10.1.90.14210.1.90.143
4210.1.90.144/2810.1.90.145 – 10.1.90.15810.1.90.159
4310.1.90.160/2810.1.90.161 – 10.1.90.17410.1.90.175
4410.1.90.176/2810.1.90.177 – 10.1.90.19010.1.90.191
4510.1.90.192/2810.1.90.193 – 10.1.90.20610.1.90.207
4610.1.90.208/2810.1.90.209 – 10.1.90.22210.1.90.223
4710.1.90.224/2810.1.90.225 – 10.1.90.23810.1.90.239
4810.1.90.240/2810.1.90.241 – 10.1.90.25410.1.90.255
4910.1.91.0/2810.1.91.1 – 10.1.91.1410.1.91.15
5010.1.91.16/2810.1.91.17 – 10.1.91.3010.1.91.31
5110.1.91.32/2810.1.91.33 – 10.1.91.4610.1.91.47
5210.1.91.48/2810.1.91.49 – 10.1.91.6210.1.91.63
5310.1.91.64/2810.1.91.65 – 10.1.91.7810.1.91.79
5410.1.91.80/2810.1.91.81 – 10.1.91.9410.1.91.95
5510.1.91.96/2810.1.91.97 – 10.1.91.11010.1.91.111
5610.1.91.112/2810.1.91.113 – 10.1.91.12610.1.91.127
5710.1.91.128/2810.1.91.129 – 10.1.91.14210.1.91.143
5810.1.91.144/2810.1.91.145 – 10.1.91.15810.1.91.159
5910.1.91.160/2810.1.91.161 – 10.1.91.17410.1.91.175
6010.1.91.176/2810.1.91.177 – 10.1.91.19010.1.91.191
6110.1.91.192/2810.1.91.193 – 10.1.91.20610.1.91.207
6210.1.91.208/2810.1.91.209 – 10.1.91.22210.1.91.223
6310.1.91.224/2810.1.91.225 – 10.1.91.23810.1.91.239
6410.1.91.240/2810.1.91.241 – 10.1.91.25410.1.91.255
01 / table

IPv4 CIDR prefix table.

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

prefixsubnet maskaddresseshostsin your /22
/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-
/14255.252.0.0262,144262,142-
/15255.254.0.0131,072131,070-
/16255.255.0.065,53665,534-
/17255.255.128.032,76832,766-
/18255.255.192.016,38416,382-
/19255.255.224.08,1928,190-
/20255.255.240.04,0964,094-
/21255.255.248.02,0482,046-
/22255.255.252.01,0241,0221
/23255.255.254.05125102 split →
/24255.255.255.02562544 split →
/25255.255.255.1281281268 split →
/26255.255.255.192646216 split →
/27255.255.255.224323032 split →
/28255.255.255.240161464 split →
/29255.255.255.24886128 split →
/30255.255.255.25242256 split →
/31255.255.255.25422512 split →
/32255.255.255.255111,024 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 →