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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)10.28.92.0/22
network10.28.92.0/22
broadcast10.28.95.255
first host10.28.92.1
last host10.28.95.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.28.92.0/22
address00001010.00011100.01011100.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.00011100.01011100.00000000
broadcast00001010.00011100.01011111.11111111
green = network part, grey = host part
hex0x0a1c5c00
decimal169630720
reverse dns0.92.28.10.in-addr.arpa
ipv4-mapped::ffff:a1c:5c00

/22 split into /28 · 64 subnets

close ×
#networkhost rangebroadcast
110.28.92.0/2810.28.92.1 – 10.28.92.1410.28.92.15
210.28.92.16/2810.28.92.17 – 10.28.92.3010.28.92.31
310.28.92.32/2810.28.92.33 – 10.28.92.4610.28.92.47
410.28.92.48/2810.28.92.49 – 10.28.92.6210.28.92.63
510.28.92.64/2810.28.92.65 – 10.28.92.7810.28.92.79
610.28.92.80/2810.28.92.81 – 10.28.92.9410.28.92.95
710.28.92.96/2810.28.92.97 – 10.28.92.11010.28.92.111
810.28.92.112/2810.28.92.113 – 10.28.92.12610.28.92.127
910.28.92.128/2810.28.92.129 – 10.28.92.14210.28.92.143
1010.28.92.144/2810.28.92.145 – 10.28.92.15810.28.92.159
1110.28.92.160/2810.28.92.161 – 10.28.92.17410.28.92.175
1210.28.92.176/2810.28.92.177 – 10.28.92.19010.28.92.191
1310.28.92.192/2810.28.92.193 – 10.28.92.20610.28.92.207
1410.28.92.208/2810.28.92.209 – 10.28.92.22210.28.92.223
1510.28.92.224/2810.28.92.225 – 10.28.92.23810.28.92.239
1610.28.92.240/2810.28.92.241 – 10.28.92.25410.28.92.255
1710.28.93.0/2810.28.93.1 – 10.28.93.1410.28.93.15
1810.28.93.16/2810.28.93.17 – 10.28.93.3010.28.93.31
1910.28.93.32/2810.28.93.33 – 10.28.93.4610.28.93.47
2010.28.93.48/2810.28.93.49 – 10.28.93.6210.28.93.63
2110.28.93.64/2810.28.93.65 – 10.28.93.7810.28.93.79
2210.28.93.80/2810.28.93.81 – 10.28.93.9410.28.93.95
2310.28.93.96/2810.28.93.97 – 10.28.93.11010.28.93.111
2410.28.93.112/2810.28.93.113 – 10.28.93.12610.28.93.127
2510.28.93.128/2810.28.93.129 – 10.28.93.14210.28.93.143
2610.28.93.144/2810.28.93.145 – 10.28.93.15810.28.93.159
2710.28.93.160/2810.28.93.161 – 10.28.93.17410.28.93.175
2810.28.93.176/2810.28.93.177 – 10.28.93.19010.28.93.191
2910.28.93.192/2810.28.93.193 – 10.28.93.20610.28.93.207
3010.28.93.208/2810.28.93.209 – 10.28.93.22210.28.93.223
3110.28.93.224/2810.28.93.225 – 10.28.93.23810.28.93.239
3210.28.93.240/2810.28.93.241 – 10.28.93.25410.28.93.255
3310.28.94.0/2810.28.94.1 – 10.28.94.1410.28.94.15
3410.28.94.16/2810.28.94.17 – 10.28.94.3010.28.94.31
3510.28.94.32/2810.28.94.33 – 10.28.94.4610.28.94.47
3610.28.94.48/2810.28.94.49 – 10.28.94.6210.28.94.63
3710.28.94.64/2810.28.94.65 – 10.28.94.7810.28.94.79
3810.28.94.80/2810.28.94.81 – 10.28.94.9410.28.94.95
3910.28.94.96/2810.28.94.97 – 10.28.94.11010.28.94.111
4010.28.94.112/2810.28.94.113 – 10.28.94.12610.28.94.127
4110.28.94.128/2810.28.94.129 – 10.28.94.14210.28.94.143
4210.28.94.144/2810.28.94.145 – 10.28.94.15810.28.94.159
4310.28.94.160/2810.28.94.161 – 10.28.94.17410.28.94.175
4410.28.94.176/2810.28.94.177 – 10.28.94.19010.28.94.191
4510.28.94.192/2810.28.94.193 – 10.28.94.20610.28.94.207
4610.28.94.208/2810.28.94.209 – 10.28.94.22210.28.94.223
4710.28.94.224/2810.28.94.225 – 10.28.94.23810.28.94.239
4810.28.94.240/2810.28.94.241 – 10.28.94.25410.28.94.255
4910.28.95.0/2810.28.95.1 – 10.28.95.1410.28.95.15
5010.28.95.16/2810.28.95.17 – 10.28.95.3010.28.95.31
5110.28.95.32/2810.28.95.33 – 10.28.95.4610.28.95.47
5210.28.95.48/2810.28.95.49 – 10.28.95.6210.28.95.63
5310.28.95.64/2810.28.95.65 – 10.28.95.7810.28.95.79
5410.28.95.80/2810.28.95.81 – 10.28.95.9410.28.95.95
5510.28.95.96/2810.28.95.97 – 10.28.95.11010.28.95.111
5610.28.95.112/2810.28.95.113 – 10.28.95.12610.28.95.127
5710.28.95.128/2810.28.95.129 – 10.28.95.14210.28.95.143
5810.28.95.144/2810.28.95.145 – 10.28.95.15810.28.95.159
5910.28.95.160/2810.28.95.161 – 10.28.95.17410.28.95.175
6010.28.95.176/2810.28.95.177 – 10.28.95.19010.28.95.191
6110.28.95.192/2810.28.95.193 – 10.28.95.20610.28.95.207
6210.28.95.208/2810.28.95.209 – 10.28.95.22210.28.95.223
6310.28.95.224/2810.28.95.225 – 10.28.95.23810.28.95.239
6410.28.95.240/2810.28.95.241 – 10.28.95.25410.28.95.255
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 →