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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)10.28.52.0/22
network10.28.52.0/22
broadcast10.28.55.255
first host10.28.52.1
last host10.28.55.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.28.52.0/22
address00001010.00011100.00110100.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.00011100.00110100.00000000
broadcast00001010.00011100.00110111.11111111
green = network part, grey = host part
hex0x0a1c3400
decimal169620480
reverse dns0.52.28.10.in-addr.arpa
ipv4-mapped::ffff:a1c:3400

/22 split into /28 · 64 subnets

close ×
#networkhost rangebroadcast
110.28.52.0/2810.28.52.1 – 10.28.52.1410.28.52.15
210.28.52.16/2810.28.52.17 – 10.28.52.3010.28.52.31
310.28.52.32/2810.28.52.33 – 10.28.52.4610.28.52.47
410.28.52.48/2810.28.52.49 – 10.28.52.6210.28.52.63
510.28.52.64/2810.28.52.65 – 10.28.52.7810.28.52.79
610.28.52.80/2810.28.52.81 – 10.28.52.9410.28.52.95
710.28.52.96/2810.28.52.97 – 10.28.52.11010.28.52.111
810.28.52.112/2810.28.52.113 – 10.28.52.12610.28.52.127
910.28.52.128/2810.28.52.129 – 10.28.52.14210.28.52.143
1010.28.52.144/2810.28.52.145 – 10.28.52.15810.28.52.159
1110.28.52.160/2810.28.52.161 – 10.28.52.17410.28.52.175
1210.28.52.176/2810.28.52.177 – 10.28.52.19010.28.52.191
1310.28.52.192/2810.28.52.193 – 10.28.52.20610.28.52.207
1410.28.52.208/2810.28.52.209 – 10.28.52.22210.28.52.223
1510.28.52.224/2810.28.52.225 – 10.28.52.23810.28.52.239
1610.28.52.240/2810.28.52.241 – 10.28.52.25410.28.52.255
1710.28.53.0/2810.28.53.1 – 10.28.53.1410.28.53.15
1810.28.53.16/2810.28.53.17 – 10.28.53.3010.28.53.31
1910.28.53.32/2810.28.53.33 – 10.28.53.4610.28.53.47
2010.28.53.48/2810.28.53.49 – 10.28.53.6210.28.53.63
2110.28.53.64/2810.28.53.65 – 10.28.53.7810.28.53.79
2210.28.53.80/2810.28.53.81 – 10.28.53.9410.28.53.95
2310.28.53.96/2810.28.53.97 – 10.28.53.11010.28.53.111
2410.28.53.112/2810.28.53.113 – 10.28.53.12610.28.53.127
2510.28.53.128/2810.28.53.129 – 10.28.53.14210.28.53.143
2610.28.53.144/2810.28.53.145 – 10.28.53.15810.28.53.159
2710.28.53.160/2810.28.53.161 – 10.28.53.17410.28.53.175
2810.28.53.176/2810.28.53.177 – 10.28.53.19010.28.53.191
2910.28.53.192/2810.28.53.193 – 10.28.53.20610.28.53.207
3010.28.53.208/2810.28.53.209 – 10.28.53.22210.28.53.223
3110.28.53.224/2810.28.53.225 – 10.28.53.23810.28.53.239
3210.28.53.240/2810.28.53.241 – 10.28.53.25410.28.53.255
3310.28.54.0/2810.28.54.1 – 10.28.54.1410.28.54.15
3410.28.54.16/2810.28.54.17 – 10.28.54.3010.28.54.31
3510.28.54.32/2810.28.54.33 – 10.28.54.4610.28.54.47
3610.28.54.48/2810.28.54.49 – 10.28.54.6210.28.54.63
3710.28.54.64/2810.28.54.65 – 10.28.54.7810.28.54.79
3810.28.54.80/2810.28.54.81 – 10.28.54.9410.28.54.95
3910.28.54.96/2810.28.54.97 – 10.28.54.11010.28.54.111
4010.28.54.112/2810.28.54.113 – 10.28.54.12610.28.54.127
4110.28.54.128/2810.28.54.129 – 10.28.54.14210.28.54.143
4210.28.54.144/2810.28.54.145 – 10.28.54.15810.28.54.159
4310.28.54.160/2810.28.54.161 – 10.28.54.17410.28.54.175
4410.28.54.176/2810.28.54.177 – 10.28.54.19010.28.54.191
4510.28.54.192/2810.28.54.193 – 10.28.54.20610.28.54.207
4610.28.54.208/2810.28.54.209 – 10.28.54.22210.28.54.223
4710.28.54.224/2810.28.54.225 – 10.28.54.23810.28.54.239
4810.28.54.240/2810.28.54.241 – 10.28.54.25410.28.54.255
4910.28.55.0/2810.28.55.1 – 10.28.55.1410.28.55.15
5010.28.55.16/2810.28.55.17 – 10.28.55.3010.28.55.31
5110.28.55.32/2810.28.55.33 – 10.28.55.4610.28.55.47
5210.28.55.48/2810.28.55.49 – 10.28.55.6210.28.55.63
5310.28.55.64/2810.28.55.65 – 10.28.55.7810.28.55.79
5410.28.55.80/2810.28.55.81 – 10.28.55.9410.28.55.95
5510.28.55.96/2810.28.55.97 – 10.28.55.11010.28.55.111
5610.28.55.112/2810.28.55.113 – 10.28.55.12610.28.55.127
5710.28.55.128/2810.28.55.129 – 10.28.55.14210.28.55.143
5810.28.55.144/2810.28.55.145 – 10.28.55.15810.28.55.159
5910.28.55.160/2810.28.55.161 – 10.28.55.17410.28.55.175
6010.28.55.176/2810.28.55.177 – 10.28.55.19010.28.55.191
6110.28.55.192/2810.28.55.193 – 10.28.55.20610.28.55.207
6210.28.55.208/2810.28.55.209 – 10.28.55.22210.28.55.223
6310.28.55.224/2810.28.55.225 – 10.28.55.23810.28.55.239
6410.28.55.240/2810.28.55.241 – 10.28.55.25410.28.55.255
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 →