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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)10.28.60.0/22
network10.28.60.0/22
broadcast10.28.63.255
first host10.28.60.1
last host10.28.63.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.28.60.0/22
address00001010.00011100.00111100.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.00011100.00111100.00000000
broadcast00001010.00011100.00111111.11111111
green = network part, grey = host part
hex0x0a1c3c00
decimal169622528
reverse dns0.60.28.10.in-addr.arpa
ipv4-mapped::ffff:a1c:3c00

/22 split into /28 · 64 subnets

close ×
#networkhost rangebroadcast
110.28.60.0/2810.28.60.1 – 10.28.60.1410.28.60.15
210.28.60.16/2810.28.60.17 – 10.28.60.3010.28.60.31
310.28.60.32/2810.28.60.33 – 10.28.60.4610.28.60.47
410.28.60.48/2810.28.60.49 – 10.28.60.6210.28.60.63
510.28.60.64/2810.28.60.65 – 10.28.60.7810.28.60.79
610.28.60.80/2810.28.60.81 – 10.28.60.9410.28.60.95
710.28.60.96/2810.28.60.97 – 10.28.60.11010.28.60.111
810.28.60.112/2810.28.60.113 – 10.28.60.12610.28.60.127
910.28.60.128/2810.28.60.129 – 10.28.60.14210.28.60.143
1010.28.60.144/2810.28.60.145 – 10.28.60.15810.28.60.159
1110.28.60.160/2810.28.60.161 – 10.28.60.17410.28.60.175
1210.28.60.176/2810.28.60.177 – 10.28.60.19010.28.60.191
1310.28.60.192/2810.28.60.193 – 10.28.60.20610.28.60.207
1410.28.60.208/2810.28.60.209 – 10.28.60.22210.28.60.223
1510.28.60.224/2810.28.60.225 – 10.28.60.23810.28.60.239
1610.28.60.240/2810.28.60.241 – 10.28.60.25410.28.60.255
1710.28.61.0/2810.28.61.1 – 10.28.61.1410.28.61.15
1810.28.61.16/2810.28.61.17 – 10.28.61.3010.28.61.31
1910.28.61.32/2810.28.61.33 – 10.28.61.4610.28.61.47
2010.28.61.48/2810.28.61.49 – 10.28.61.6210.28.61.63
2110.28.61.64/2810.28.61.65 – 10.28.61.7810.28.61.79
2210.28.61.80/2810.28.61.81 – 10.28.61.9410.28.61.95
2310.28.61.96/2810.28.61.97 – 10.28.61.11010.28.61.111
2410.28.61.112/2810.28.61.113 – 10.28.61.12610.28.61.127
2510.28.61.128/2810.28.61.129 – 10.28.61.14210.28.61.143
2610.28.61.144/2810.28.61.145 – 10.28.61.15810.28.61.159
2710.28.61.160/2810.28.61.161 – 10.28.61.17410.28.61.175
2810.28.61.176/2810.28.61.177 – 10.28.61.19010.28.61.191
2910.28.61.192/2810.28.61.193 – 10.28.61.20610.28.61.207
3010.28.61.208/2810.28.61.209 – 10.28.61.22210.28.61.223
3110.28.61.224/2810.28.61.225 – 10.28.61.23810.28.61.239
3210.28.61.240/2810.28.61.241 – 10.28.61.25410.28.61.255
3310.28.62.0/2810.28.62.1 – 10.28.62.1410.28.62.15
3410.28.62.16/2810.28.62.17 – 10.28.62.3010.28.62.31
3510.28.62.32/2810.28.62.33 – 10.28.62.4610.28.62.47
3610.28.62.48/2810.28.62.49 – 10.28.62.6210.28.62.63
3710.28.62.64/2810.28.62.65 – 10.28.62.7810.28.62.79
3810.28.62.80/2810.28.62.81 – 10.28.62.9410.28.62.95
3910.28.62.96/2810.28.62.97 – 10.28.62.11010.28.62.111
4010.28.62.112/2810.28.62.113 – 10.28.62.12610.28.62.127
4110.28.62.128/2810.28.62.129 – 10.28.62.14210.28.62.143
4210.28.62.144/2810.28.62.145 – 10.28.62.15810.28.62.159
4310.28.62.160/2810.28.62.161 – 10.28.62.17410.28.62.175
4410.28.62.176/2810.28.62.177 – 10.28.62.19010.28.62.191
4510.28.62.192/2810.28.62.193 – 10.28.62.20610.28.62.207
4610.28.62.208/2810.28.62.209 – 10.28.62.22210.28.62.223
4710.28.62.224/2810.28.62.225 – 10.28.62.23810.28.62.239
4810.28.62.240/2810.28.62.241 – 10.28.62.25410.28.62.255
4910.28.63.0/2810.28.63.1 – 10.28.63.1410.28.63.15
5010.28.63.16/2810.28.63.17 – 10.28.63.3010.28.63.31
5110.28.63.32/2810.28.63.33 – 10.28.63.4610.28.63.47
5210.28.63.48/2810.28.63.49 – 10.28.63.6210.28.63.63
5310.28.63.64/2810.28.63.65 – 10.28.63.7810.28.63.79
5410.28.63.80/2810.28.63.81 – 10.28.63.9410.28.63.95
5510.28.63.96/2810.28.63.97 – 10.28.63.11010.28.63.111
5610.28.63.112/2810.28.63.113 – 10.28.63.12610.28.63.127
5710.28.63.128/2810.28.63.129 – 10.28.63.14210.28.63.143
5810.28.63.144/2810.28.63.145 – 10.28.63.15810.28.63.159
5910.28.63.160/2810.28.63.161 – 10.28.63.17410.28.63.175
6010.28.63.176/2810.28.63.177 – 10.28.63.19010.28.63.191
6110.28.63.192/2810.28.63.193 – 10.28.63.20610.28.63.207
6210.28.63.208/2810.28.63.209 – 10.28.63.22210.28.63.223
6310.28.63.224/2810.28.63.225 – 10.28.63.23810.28.63.239
6410.28.63.240/2810.28.63.241 – 10.28.63.25410.28.63.255
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 →