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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)10.44.204.0/22
network10.44.204.0/22
broadcast10.44.207.255
first host10.44.204.1
last host10.44.207.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.44.204.0/22
address00001010.00101100.11001100.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.00101100.11001100.00000000
broadcast00001010.00101100.11001111.11111111
green = network part, grey = host part
hex0x0a2ccc00
decimal170707968
reverse dns0.204.44.10.in-addr.arpa
ipv4-mapped::ffff:a2c:cc00

/22 split into /28 · 64 subnets

close ×
#networkhost rangebroadcast
110.44.204.0/2810.44.204.1 – 10.44.204.1410.44.204.15
210.44.204.16/2810.44.204.17 – 10.44.204.3010.44.204.31
310.44.204.32/2810.44.204.33 – 10.44.204.4610.44.204.47
410.44.204.48/2810.44.204.49 – 10.44.204.6210.44.204.63
510.44.204.64/2810.44.204.65 – 10.44.204.7810.44.204.79
610.44.204.80/2810.44.204.81 – 10.44.204.9410.44.204.95
710.44.204.96/2810.44.204.97 – 10.44.204.11010.44.204.111
810.44.204.112/2810.44.204.113 – 10.44.204.12610.44.204.127
910.44.204.128/2810.44.204.129 – 10.44.204.14210.44.204.143
1010.44.204.144/2810.44.204.145 – 10.44.204.15810.44.204.159
1110.44.204.160/2810.44.204.161 – 10.44.204.17410.44.204.175
1210.44.204.176/2810.44.204.177 – 10.44.204.19010.44.204.191
1310.44.204.192/2810.44.204.193 – 10.44.204.20610.44.204.207
1410.44.204.208/2810.44.204.209 – 10.44.204.22210.44.204.223
1510.44.204.224/2810.44.204.225 – 10.44.204.23810.44.204.239
1610.44.204.240/2810.44.204.241 – 10.44.204.25410.44.204.255
1710.44.205.0/2810.44.205.1 – 10.44.205.1410.44.205.15
1810.44.205.16/2810.44.205.17 – 10.44.205.3010.44.205.31
1910.44.205.32/2810.44.205.33 – 10.44.205.4610.44.205.47
2010.44.205.48/2810.44.205.49 – 10.44.205.6210.44.205.63
2110.44.205.64/2810.44.205.65 – 10.44.205.7810.44.205.79
2210.44.205.80/2810.44.205.81 – 10.44.205.9410.44.205.95
2310.44.205.96/2810.44.205.97 – 10.44.205.11010.44.205.111
2410.44.205.112/2810.44.205.113 – 10.44.205.12610.44.205.127
2510.44.205.128/2810.44.205.129 – 10.44.205.14210.44.205.143
2610.44.205.144/2810.44.205.145 – 10.44.205.15810.44.205.159
2710.44.205.160/2810.44.205.161 – 10.44.205.17410.44.205.175
2810.44.205.176/2810.44.205.177 – 10.44.205.19010.44.205.191
2910.44.205.192/2810.44.205.193 – 10.44.205.20610.44.205.207
3010.44.205.208/2810.44.205.209 – 10.44.205.22210.44.205.223
3110.44.205.224/2810.44.205.225 – 10.44.205.23810.44.205.239
3210.44.205.240/2810.44.205.241 – 10.44.205.25410.44.205.255
3310.44.206.0/2810.44.206.1 – 10.44.206.1410.44.206.15
3410.44.206.16/2810.44.206.17 – 10.44.206.3010.44.206.31
3510.44.206.32/2810.44.206.33 – 10.44.206.4610.44.206.47
3610.44.206.48/2810.44.206.49 – 10.44.206.6210.44.206.63
3710.44.206.64/2810.44.206.65 – 10.44.206.7810.44.206.79
3810.44.206.80/2810.44.206.81 – 10.44.206.9410.44.206.95
3910.44.206.96/2810.44.206.97 – 10.44.206.11010.44.206.111
4010.44.206.112/2810.44.206.113 – 10.44.206.12610.44.206.127
4110.44.206.128/2810.44.206.129 – 10.44.206.14210.44.206.143
4210.44.206.144/2810.44.206.145 – 10.44.206.15810.44.206.159
4310.44.206.160/2810.44.206.161 – 10.44.206.17410.44.206.175
4410.44.206.176/2810.44.206.177 – 10.44.206.19010.44.206.191
4510.44.206.192/2810.44.206.193 – 10.44.206.20610.44.206.207
4610.44.206.208/2810.44.206.209 – 10.44.206.22210.44.206.223
4710.44.206.224/2810.44.206.225 – 10.44.206.23810.44.206.239
4810.44.206.240/2810.44.206.241 – 10.44.206.25410.44.206.255
4910.44.207.0/2810.44.207.1 – 10.44.207.1410.44.207.15
5010.44.207.16/2810.44.207.17 – 10.44.207.3010.44.207.31
5110.44.207.32/2810.44.207.33 – 10.44.207.4610.44.207.47
5210.44.207.48/2810.44.207.49 – 10.44.207.6210.44.207.63
5310.44.207.64/2810.44.207.65 – 10.44.207.7810.44.207.79
5410.44.207.80/2810.44.207.81 – 10.44.207.9410.44.207.95
5510.44.207.96/2810.44.207.97 – 10.44.207.11010.44.207.111
5610.44.207.112/2810.44.207.113 – 10.44.207.12610.44.207.127
5710.44.207.128/2810.44.207.129 – 10.44.207.14210.44.207.143
5810.44.207.144/2810.44.207.145 – 10.44.207.15810.44.207.159
5910.44.207.160/2810.44.207.161 – 10.44.207.17410.44.207.175
6010.44.207.176/2810.44.207.177 – 10.44.207.19010.44.207.191
6110.44.207.192/2810.44.207.193 – 10.44.207.20610.44.207.207
6210.44.207.208/2810.44.207.209 – 10.44.207.22210.44.207.223
6310.44.207.224/2810.44.207.225 – 10.44.207.23810.44.207.239
6410.44.207.240/2810.44.207.241 – 10.44.207.25410.44.207.255
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 →