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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)10.167.144.0/22
network10.167.144.0/22
broadcast10.167.147.255
first host10.167.144.1
last host10.167.147.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.167.144.0/22
address00001010.10100111.10010000.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.10100111.10010000.00000000
broadcast00001010.10100111.10010011.11111111
green = network part, grey = host part
hex0x0aa79000
decimal178753536
reverse dns0.144.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:9000

/22 split into /28 · 64 subnets

close ×
#networkhost rangebroadcast
110.167.144.0/2810.167.144.1 – 10.167.144.1410.167.144.15
210.167.144.16/2810.167.144.17 – 10.167.144.3010.167.144.31
310.167.144.32/2810.167.144.33 – 10.167.144.4610.167.144.47
410.167.144.48/2810.167.144.49 – 10.167.144.6210.167.144.63
510.167.144.64/2810.167.144.65 – 10.167.144.7810.167.144.79
610.167.144.80/2810.167.144.81 – 10.167.144.9410.167.144.95
710.167.144.96/2810.167.144.97 – 10.167.144.11010.167.144.111
810.167.144.112/2810.167.144.113 – 10.167.144.12610.167.144.127
910.167.144.128/2810.167.144.129 – 10.167.144.14210.167.144.143
1010.167.144.144/2810.167.144.145 – 10.167.144.15810.167.144.159
1110.167.144.160/2810.167.144.161 – 10.167.144.17410.167.144.175
1210.167.144.176/2810.167.144.177 – 10.167.144.19010.167.144.191
1310.167.144.192/2810.167.144.193 – 10.167.144.20610.167.144.207
1410.167.144.208/2810.167.144.209 – 10.167.144.22210.167.144.223
1510.167.144.224/2810.167.144.225 – 10.167.144.23810.167.144.239
1610.167.144.240/2810.167.144.241 – 10.167.144.25410.167.144.255
1710.167.145.0/2810.167.145.1 – 10.167.145.1410.167.145.15
1810.167.145.16/2810.167.145.17 – 10.167.145.3010.167.145.31
1910.167.145.32/2810.167.145.33 – 10.167.145.4610.167.145.47
2010.167.145.48/2810.167.145.49 – 10.167.145.6210.167.145.63
2110.167.145.64/2810.167.145.65 – 10.167.145.7810.167.145.79
2210.167.145.80/2810.167.145.81 – 10.167.145.9410.167.145.95
2310.167.145.96/2810.167.145.97 – 10.167.145.11010.167.145.111
2410.167.145.112/2810.167.145.113 – 10.167.145.12610.167.145.127
2510.167.145.128/2810.167.145.129 – 10.167.145.14210.167.145.143
2610.167.145.144/2810.167.145.145 – 10.167.145.15810.167.145.159
2710.167.145.160/2810.167.145.161 – 10.167.145.17410.167.145.175
2810.167.145.176/2810.167.145.177 – 10.167.145.19010.167.145.191
2910.167.145.192/2810.167.145.193 – 10.167.145.20610.167.145.207
3010.167.145.208/2810.167.145.209 – 10.167.145.22210.167.145.223
3110.167.145.224/2810.167.145.225 – 10.167.145.23810.167.145.239
3210.167.145.240/2810.167.145.241 – 10.167.145.25410.167.145.255
3310.167.146.0/2810.167.146.1 – 10.167.146.1410.167.146.15
3410.167.146.16/2810.167.146.17 – 10.167.146.3010.167.146.31
3510.167.146.32/2810.167.146.33 – 10.167.146.4610.167.146.47
3610.167.146.48/2810.167.146.49 – 10.167.146.6210.167.146.63
3710.167.146.64/2810.167.146.65 – 10.167.146.7810.167.146.79
3810.167.146.80/2810.167.146.81 – 10.167.146.9410.167.146.95
3910.167.146.96/2810.167.146.97 – 10.167.146.11010.167.146.111
4010.167.146.112/2810.167.146.113 – 10.167.146.12610.167.146.127
4110.167.146.128/2810.167.146.129 – 10.167.146.14210.167.146.143
4210.167.146.144/2810.167.146.145 – 10.167.146.15810.167.146.159
4310.167.146.160/2810.167.146.161 – 10.167.146.17410.167.146.175
4410.167.146.176/2810.167.146.177 – 10.167.146.19010.167.146.191
4510.167.146.192/2810.167.146.193 – 10.167.146.20610.167.146.207
4610.167.146.208/2810.167.146.209 – 10.167.146.22210.167.146.223
4710.167.146.224/2810.167.146.225 – 10.167.146.23810.167.146.239
4810.167.146.240/2810.167.146.241 – 10.167.146.25410.167.146.255
4910.167.147.0/2810.167.147.1 – 10.167.147.1410.167.147.15
5010.167.147.16/2810.167.147.17 – 10.167.147.3010.167.147.31
5110.167.147.32/2810.167.147.33 – 10.167.147.4610.167.147.47
5210.167.147.48/2810.167.147.49 – 10.167.147.6210.167.147.63
5310.167.147.64/2810.167.147.65 – 10.167.147.7810.167.147.79
5410.167.147.80/2810.167.147.81 – 10.167.147.9410.167.147.95
5510.167.147.96/2810.167.147.97 – 10.167.147.11010.167.147.111
5610.167.147.112/2810.167.147.113 – 10.167.147.12610.167.147.127
5710.167.147.128/2810.167.147.129 – 10.167.147.14210.167.147.143
5810.167.147.144/2810.167.147.145 – 10.167.147.15810.167.147.159
5910.167.147.160/2810.167.147.161 – 10.167.147.17410.167.147.175
6010.167.147.176/2810.167.147.177 – 10.167.147.19010.167.147.191
6110.167.147.192/2810.167.147.193 – 10.167.147.20610.167.147.207
6210.167.147.208/2810.167.147.209 – 10.167.147.22210.167.147.223
6310.167.147.224/2810.167.147.225 – 10.167.147.23810.167.147.239
6410.167.147.240/2810.167.147.241 – 10.167.147.25410.167.147.255
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 →