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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)10.167.176.0/22
network10.167.176.0/22
broadcast10.167.179.255
first host10.167.176.1
last host10.167.179.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.167.176.0/22
address00001010.10100111.10110000.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.10100111.10110000.00000000
broadcast00001010.10100111.10110011.11111111
green = network part, grey = host part
hex0x0aa7b000
decimal178761728
reverse dns0.176.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:b000

/22 split into /28 · 64 subnets

close ×
#networkhost rangebroadcast
110.167.176.0/2810.167.176.1 – 10.167.176.1410.167.176.15
210.167.176.16/2810.167.176.17 – 10.167.176.3010.167.176.31
310.167.176.32/2810.167.176.33 – 10.167.176.4610.167.176.47
410.167.176.48/2810.167.176.49 – 10.167.176.6210.167.176.63
510.167.176.64/2810.167.176.65 – 10.167.176.7810.167.176.79
610.167.176.80/2810.167.176.81 – 10.167.176.9410.167.176.95
710.167.176.96/2810.167.176.97 – 10.167.176.11010.167.176.111
810.167.176.112/2810.167.176.113 – 10.167.176.12610.167.176.127
910.167.176.128/2810.167.176.129 – 10.167.176.14210.167.176.143
1010.167.176.144/2810.167.176.145 – 10.167.176.15810.167.176.159
1110.167.176.160/2810.167.176.161 – 10.167.176.17410.167.176.175
1210.167.176.176/2810.167.176.177 – 10.167.176.19010.167.176.191
1310.167.176.192/2810.167.176.193 – 10.167.176.20610.167.176.207
1410.167.176.208/2810.167.176.209 – 10.167.176.22210.167.176.223
1510.167.176.224/2810.167.176.225 – 10.167.176.23810.167.176.239
1610.167.176.240/2810.167.176.241 – 10.167.176.25410.167.176.255
1710.167.177.0/2810.167.177.1 – 10.167.177.1410.167.177.15
1810.167.177.16/2810.167.177.17 – 10.167.177.3010.167.177.31
1910.167.177.32/2810.167.177.33 – 10.167.177.4610.167.177.47
2010.167.177.48/2810.167.177.49 – 10.167.177.6210.167.177.63
2110.167.177.64/2810.167.177.65 – 10.167.177.7810.167.177.79
2210.167.177.80/2810.167.177.81 – 10.167.177.9410.167.177.95
2310.167.177.96/2810.167.177.97 – 10.167.177.11010.167.177.111
2410.167.177.112/2810.167.177.113 – 10.167.177.12610.167.177.127
2510.167.177.128/2810.167.177.129 – 10.167.177.14210.167.177.143
2610.167.177.144/2810.167.177.145 – 10.167.177.15810.167.177.159
2710.167.177.160/2810.167.177.161 – 10.167.177.17410.167.177.175
2810.167.177.176/2810.167.177.177 – 10.167.177.19010.167.177.191
2910.167.177.192/2810.167.177.193 – 10.167.177.20610.167.177.207
3010.167.177.208/2810.167.177.209 – 10.167.177.22210.167.177.223
3110.167.177.224/2810.167.177.225 – 10.167.177.23810.167.177.239
3210.167.177.240/2810.167.177.241 – 10.167.177.25410.167.177.255
3310.167.178.0/2810.167.178.1 – 10.167.178.1410.167.178.15
3410.167.178.16/2810.167.178.17 – 10.167.178.3010.167.178.31
3510.167.178.32/2810.167.178.33 – 10.167.178.4610.167.178.47
3610.167.178.48/2810.167.178.49 – 10.167.178.6210.167.178.63
3710.167.178.64/2810.167.178.65 – 10.167.178.7810.167.178.79
3810.167.178.80/2810.167.178.81 – 10.167.178.9410.167.178.95
3910.167.178.96/2810.167.178.97 – 10.167.178.11010.167.178.111
4010.167.178.112/2810.167.178.113 – 10.167.178.12610.167.178.127
4110.167.178.128/2810.167.178.129 – 10.167.178.14210.167.178.143
4210.167.178.144/2810.167.178.145 – 10.167.178.15810.167.178.159
4310.167.178.160/2810.167.178.161 – 10.167.178.17410.167.178.175
4410.167.178.176/2810.167.178.177 – 10.167.178.19010.167.178.191
4510.167.178.192/2810.167.178.193 – 10.167.178.20610.167.178.207
4610.167.178.208/2810.167.178.209 – 10.167.178.22210.167.178.223
4710.167.178.224/2810.167.178.225 – 10.167.178.23810.167.178.239
4810.167.178.240/2810.167.178.241 – 10.167.178.25410.167.178.255
4910.167.179.0/2810.167.179.1 – 10.167.179.1410.167.179.15
5010.167.179.16/2810.167.179.17 – 10.167.179.3010.167.179.31
5110.167.179.32/2810.167.179.33 – 10.167.179.4610.167.179.47
5210.167.179.48/2810.167.179.49 – 10.167.179.6210.167.179.63
5310.167.179.64/2810.167.179.65 – 10.167.179.7810.167.179.79
5410.167.179.80/2810.167.179.81 – 10.167.179.9410.167.179.95
5510.167.179.96/2810.167.179.97 – 10.167.179.11010.167.179.111
5610.167.179.112/2810.167.179.113 – 10.167.179.12610.167.179.127
5710.167.179.128/2810.167.179.129 – 10.167.179.14210.167.179.143
5810.167.179.144/2810.167.179.145 – 10.167.179.15810.167.179.159
5910.167.179.160/2810.167.179.161 – 10.167.179.17410.167.179.175
6010.167.179.176/2810.167.179.177 – 10.167.179.19010.167.179.191
6110.167.179.192/2810.167.179.193 – 10.167.179.20610.167.179.207
6210.167.179.208/2810.167.179.209 – 10.167.179.22210.167.179.223
6310.167.179.224/2810.167.179.225 – 10.167.179.23810.167.179.239
6410.167.179.240/2810.167.179.241 – 10.167.179.25410.167.179.255
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 →