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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)10.167.180.0/22
network10.167.180.0/22
broadcast10.167.183.255
first host10.167.180.1
last host10.167.183.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.167.180.0/22
address00001010.10100111.10110100.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.10100111.10110100.00000000
broadcast00001010.10100111.10110111.11111111
green = network part, grey = host part
hex0x0aa7b400
decimal178762752
reverse dns0.180.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:b400

/22 split into /28 · 64 subnets

close ×
#networkhost rangebroadcast
110.167.180.0/2810.167.180.1 – 10.167.180.1410.167.180.15
210.167.180.16/2810.167.180.17 – 10.167.180.3010.167.180.31
310.167.180.32/2810.167.180.33 – 10.167.180.4610.167.180.47
410.167.180.48/2810.167.180.49 – 10.167.180.6210.167.180.63
510.167.180.64/2810.167.180.65 – 10.167.180.7810.167.180.79
610.167.180.80/2810.167.180.81 – 10.167.180.9410.167.180.95
710.167.180.96/2810.167.180.97 – 10.167.180.11010.167.180.111
810.167.180.112/2810.167.180.113 – 10.167.180.12610.167.180.127
910.167.180.128/2810.167.180.129 – 10.167.180.14210.167.180.143
1010.167.180.144/2810.167.180.145 – 10.167.180.15810.167.180.159
1110.167.180.160/2810.167.180.161 – 10.167.180.17410.167.180.175
1210.167.180.176/2810.167.180.177 – 10.167.180.19010.167.180.191
1310.167.180.192/2810.167.180.193 – 10.167.180.20610.167.180.207
1410.167.180.208/2810.167.180.209 – 10.167.180.22210.167.180.223
1510.167.180.224/2810.167.180.225 – 10.167.180.23810.167.180.239
1610.167.180.240/2810.167.180.241 – 10.167.180.25410.167.180.255
1710.167.181.0/2810.167.181.1 – 10.167.181.1410.167.181.15
1810.167.181.16/2810.167.181.17 – 10.167.181.3010.167.181.31
1910.167.181.32/2810.167.181.33 – 10.167.181.4610.167.181.47
2010.167.181.48/2810.167.181.49 – 10.167.181.6210.167.181.63
2110.167.181.64/2810.167.181.65 – 10.167.181.7810.167.181.79
2210.167.181.80/2810.167.181.81 – 10.167.181.9410.167.181.95
2310.167.181.96/2810.167.181.97 – 10.167.181.11010.167.181.111
2410.167.181.112/2810.167.181.113 – 10.167.181.12610.167.181.127
2510.167.181.128/2810.167.181.129 – 10.167.181.14210.167.181.143
2610.167.181.144/2810.167.181.145 – 10.167.181.15810.167.181.159
2710.167.181.160/2810.167.181.161 – 10.167.181.17410.167.181.175
2810.167.181.176/2810.167.181.177 – 10.167.181.19010.167.181.191
2910.167.181.192/2810.167.181.193 – 10.167.181.20610.167.181.207
3010.167.181.208/2810.167.181.209 – 10.167.181.22210.167.181.223
3110.167.181.224/2810.167.181.225 – 10.167.181.23810.167.181.239
3210.167.181.240/2810.167.181.241 – 10.167.181.25410.167.181.255
3310.167.182.0/2810.167.182.1 – 10.167.182.1410.167.182.15
3410.167.182.16/2810.167.182.17 – 10.167.182.3010.167.182.31
3510.167.182.32/2810.167.182.33 – 10.167.182.4610.167.182.47
3610.167.182.48/2810.167.182.49 – 10.167.182.6210.167.182.63
3710.167.182.64/2810.167.182.65 – 10.167.182.7810.167.182.79
3810.167.182.80/2810.167.182.81 – 10.167.182.9410.167.182.95
3910.167.182.96/2810.167.182.97 – 10.167.182.11010.167.182.111
4010.167.182.112/2810.167.182.113 – 10.167.182.12610.167.182.127
4110.167.182.128/2810.167.182.129 – 10.167.182.14210.167.182.143
4210.167.182.144/2810.167.182.145 – 10.167.182.15810.167.182.159
4310.167.182.160/2810.167.182.161 – 10.167.182.17410.167.182.175
4410.167.182.176/2810.167.182.177 – 10.167.182.19010.167.182.191
4510.167.182.192/2810.167.182.193 – 10.167.182.20610.167.182.207
4610.167.182.208/2810.167.182.209 – 10.167.182.22210.167.182.223
4710.167.182.224/2810.167.182.225 – 10.167.182.23810.167.182.239
4810.167.182.240/2810.167.182.241 – 10.167.182.25410.167.182.255
4910.167.183.0/2810.167.183.1 – 10.167.183.1410.167.183.15
5010.167.183.16/2810.167.183.17 – 10.167.183.3010.167.183.31
5110.167.183.32/2810.167.183.33 – 10.167.183.4610.167.183.47
5210.167.183.48/2810.167.183.49 – 10.167.183.6210.167.183.63
5310.167.183.64/2810.167.183.65 – 10.167.183.7810.167.183.79
5410.167.183.80/2810.167.183.81 – 10.167.183.9410.167.183.95
5510.167.183.96/2810.167.183.97 – 10.167.183.11010.167.183.111
5610.167.183.112/2810.167.183.113 – 10.167.183.12610.167.183.127
5710.167.183.128/2810.167.183.129 – 10.167.183.14210.167.183.143
5810.167.183.144/2810.167.183.145 – 10.167.183.15810.167.183.159
5910.167.183.160/2810.167.183.161 – 10.167.183.17410.167.183.175
6010.167.183.176/2810.167.183.177 – 10.167.183.19010.167.183.191
6110.167.183.192/2810.167.183.193 – 10.167.183.20610.167.183.207
6210.167.183.208/2810.167.183.209 – 10.167.183.22210.167.183.223
6310.167.183.224/2810.167.183.225 – 10.167.183.23810.167.183.239
6410.167.183.240/2810.167.183.241 – 10.167.183.25410.167.183.255
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 →